MCP2551-I/SN - MICROCHIP

MCP2551

Features

• Supports 1 Mb/s operation

• Implements ISO-11898 standard physical layer

requirements

• Suitable for 12V and 24V systems

• Externally-controlled slope for reduced RFI

emissions

• Detection of ground fault (permanent Dominant)

on TXD input

• Power-on Reset and voltage brown-out protection

• An unpowered node or brown-out event will not

disturb the CAN bus

• Low current standby operation

• Protection against damage due to short-circuit

conditions (positive or negative battery voltage)

• Protection against high-voltage transients

• Automatic thermal shutdown protection

• Up to 112 nodes can be connected

• High-noise immunity due to differential bus

implementation

• Temperature ranges:

- Industrial (I): -40°C to +85°C

- Extended (E): -40°C to +125°C

Package Types

Block Diagram

CANH

CANL

VREF

TXD

VSS

VDD

RXD

PDIP/SOIC

MCP2551

Thermal

Shutdown

VDD

VSS

CANH

CANL

TXD

RXD

VREF

VDD

Slope

Control Power-On

Reset

Reference

Voltage Receiver

GND

0.5 VDD

TXD

Dominant

Detect

Driver

Control

High-Speed CAN Transceiver

MCP2551

NOTES:

MCP2551

1.0 DEVICE OVERVIEW

The MCP2551 is a high-speed CAN, fault-tolerant

device that serves as the interface between a CAN

proto col controller and the ph ysical bus. The MCP2551

device provides differential transmit and receive

capability for the CAN protocol controller, and is fully

comp atible with the ISO-11898 stan dard, inc luding 2 4V

requirements. It will operate at speeds of up to 1 Mb/s.

Typically, each node in a CAN system must have a

device to convert the digital signals generated by a

CAN co ntroller to si gnals suit able fo r transmissio n over

the bus cabling (differential output). It also provides a

buff er between the CA N controller and the hi gh-voltag e

spikes that can be generated on the CAN bus by

outside sources (EMI, ESD, electrical transients, etc.).

1.1 Transmitter Function

The CAN bus has two states: Dominant and

Recessive. A Dominant state occurs when the

differential voltage between CANH and CANL is

great er than a defined v oltag e (e.g.,1.2 V). A Rece ssive

state occ urs wh en the di ffer en tia l v ol t age is le ss th an a

defined voltage (typically 0V). The Dominant and

Reces sive sta tes correspon d to the Low and High stat e

of the TXD input pin, respectively. However, a

Dominant state initiated by another CAN node will

override a Recessive state on the CAN bus.

1.1.1 MAXIMUM NUMBER OF NODES

The MCP2551 CAN outputs will drive a minimum load

of 45Ω, allowing a maximum of 112 nodes to be

connected (given a minimum differential input

resistance of 20 kΩ and a nominal termination resistor

value of 120Ω).

1.2 Receiver Function

The RXD output pin reflects the differential bus voltage

between CA NH and CANL. The Low and Hi gh states of

the RXD output pin correspond to the Dominant and

Recessi ve states of the CAN bus, respectivel y.

1.3 Internal Protection

CANH and CANL are protected against battery short-

circuits and electrical transients that can occur on the

CAN bus. This feature prevents destruction of the

transmi tter out put stage duri ng such a fault condi tion.

The device is further protected from excessive current

loading by thermal shutdown circuitry that disables the

outp ut dri vers w hen th e junc tion te mpera ture e xceeds

a nominal limit of 165°C. All other parts of the chip

remain operational, and the chip temperature is low-

ered due to the decreased power dissipation in the

transmitter outputs. This protection is essential to

protect against bus line short-circuit-induced damage.

1.4 Operating Modes

The RS pin allows three modes of operation to be

selected:

•High-Speed

• Slope-Control

• Standby

These mode s are sum m ariz ed in Table 1-1.

When in High-Speed or Slope-Control mode, the

drivers for the CANH and CANL signals are internally

regulated to provide controlled symmetry in order to

minimize EMI emissions.

Additionally, the slope of the signal transitions on

CANH and CANL can be controlled with a resistor

connected from pin 8 (RS) to ground. The slope must

be proportional to the current output at RS, which will

further reduce EMI emissions.

1.4.1 HIGH-SPEED

High-Speed mod e is se lected by co nnecti ng the R S pin

to VSS. In this mode, the transmitter output drivers have

fast output rise and fall times to support high-speed

CAN bus rates.

1.4.2 SLOPE-CONTROL

Slope-C ontrol mode further red uces EMI by limiting the

rise and fall times of CANH and CANL. The slope, or

slew rate (SR), is controlled by connecting an external

resistor (REXT) between RS and VOL (usually ground).

The slope is proportional to th e current outpu t at the RS

pin. Since the current is primarily determined by the

slope-c ontrol resis tance va lue REXT, a ce rtain sle w rate

is achieved by applying a specific resistance.

Figure 1-1 illustrates typical slew rate values as a

function of the slope-control resistance value.

1.4.3 STANDBY MODE

The device may be placed in Standby or SLEEP mode

by applyi ng a high-leve l to the RS pin. In SL EEP mode,

the transmitter is switched off an d the receiver operates

at a lower current. The receive pin on the controller side

(RXD) is still functional, but will operate at a slower

rate. The att ach ed microcont roller can mo nitor RXD for

CAN bus activity and place the transceiver into normal

operation via the RS pin (at higher bus rates, the first

CAN message ma y be lost).

MCP2551

TABLE 1-1: MODES OF OPERATION

TABLE 1-2: TRANSCEIVER TRUTH TABLE

FIGURE 1-1: SLEW RATE VS. SLOPE-CONTROL RESISTANCE VALUE

Mode Current at Rs Pin Resulting Voltage at RS Pin

Standby -IRS < 10 µA VRS > 0.75 VDD

Slope-Control 10 µA < -IRS < 200 µA 0.4 VDD < VRS < 0.6 VDD

High-Speed -IRS < 610 µA 0 < VRS < 0.3VDD

VDD VRS TXD CANH CANL Bus State(1) RXD(1)

4.5V ≤ VDD ≤ 5.5V VRS < 0.75 VDD 0 HIGH LOW Dominant 0

1 or floating Not Driven Not Driven Recessive 1

VRS > 0.75 VDD X Not Driven Not Driven Recessive 1

VPOR < VDD < 4.5V

(See Note 3)VRS < 0.75 VDD 0 HIGH LOW Dominant 0

1 or floating Not Driven Not Driven Recessive 1

VRS > 0.75 VDD X Not Driven Not Driven Recessive 1

0 < VDD < VPOR XX

Not Driven/

No Load Not Driven/

No Load High Impedance X

Note 1: If another bus node is transmitting a Dominant bit on the CAN bus, then RXD is a logic ‘0’.

2: X = “don’t care”.

3: Device drivers will function, although outputs are not ensured to meet the ISO-11898 specification.

10 20 30 40 49 60 70 76 90 100 110 120

Resistance (k)

Slew Rate V/μs

MCP2551

1.5 TXD Permanent Dominant

Detection

If the MCP2551 detects an extended Low state on the

TXD input, it will disable the CANH and CANL output

drivers in orde r to preven t th e c orrup tio n o f da ta on th e

CAN bus. The drivers are disabled if TXD is Low for

more than 1.25 ms (minimum). This implies a

maximum bit time of 62.5 µs (16 kb/s bus rate),

allowing up to 20 consecutive transmitted Dominant

bits during a m ultiple bit e rror and error f rame scenari o.

The drivers remain disabled as long as TXD remains

Low. A rising edge on TXD wil l reset the t imer logic an d

enable the C AN H and CANL outp ut driv ers .

1.6 Power-on Reset

When the device is powered on, CANH and CANL

remain in a hig h-impedance state u ntil VDD reaches th e

voltage-level VPORH. In addition, CANH and CANL will

remain in a high-impedance state if TXD is Low when

VDD reaches VPORH. CANH and CANL will become

activ e on ly a fter TXD i s as ser ted Hig h. O nce powe red

on, CA NH and CANL will e nter a high-imp edanc e st ate

if the voltage level at VDD falls below VPORL, providing

voltage brown-out protection during normal operation.

1.7 Pin Descriptions

The 8-pin pinout is listed in Table 1-3.

TABLE 1-3: MCP2551 PINOUT

1.7.1 TRANSMITTER DATA INPUT (TXD)

TXD is a TTL-comp atible in put pin . The dat a on this pin

is driven out on the CANH and CANL differential output

pins. It is usually connected to the transmitter data

output o f th e CAN c ontrol ler devic e. Whe n T XD is Lo w,

CANH and CANL ar e in the Dominant st ate. When TXD

is High, CANH and CANL are in the Recessive state,

provi ded th at ano ther C AN no de is no t d riving the CA N

bus w ith a D omi nan t s t ate . TXD has a n i ntern al pu ll-up

resistor (nominal 25 kΩ to VDD).

1.7.2 GROUND SUPPLY (VSS)

Ground sup ply pin.

1.7.3 SUPPLY VOLTAGE (VDD)

Positive supply voltage pin.

1.7. 4 R ECEI VER DATA OUTPUT (RXD)

RXD is a CMOS-compatible output that drives High or

Low d ependi ng on the d if feren tial s ignal s on the C ANH

and CANL pins and is usually connected to the receiver

data input of the CAN controller device. RXD is High

when the CAN bus is Recessive and Low in the

Dominant state.

1.7. 5 REFERENCE VOLTAGE (VREF)

Reference Voltage Output (defined as VDD/2).

1.7.6 CAN LOW (CANL)

The CANL output drives the Low side of the CAN

differential bus. This pin is also tied internally to the

receive input comparator.

1.7.7 CAN HIGH (CANH)

The CANH output drives the high-side of the CAN

differential bus. This pin is also tied internally to the

receive input comparator.

1.7.8 SLOPE RESISTOR INPUT (RS)

The RS pin is used to s elect High- S peed, Slo pe-Control

or Standby modes via an external biasing resistor.

Number Pin

Name Pin Function

1 TXD Tran smit Da t a Inpu t

SS Ground

DD Supply Voltage

4 RXD Receive Data Output

5VREF Reference Ou tput Voltage

6 CANL CAN Low-Level Voltage I/O

7 CANH CAN High -Level Voltage I/O

SSlope-Control Input

MCP2551

NOTES:

MCP2551

2.0 ELECTRICAL

CHARACTERISTICS

2.1 Terms and Definitions

A number of terms are defined in ISO-11898 that are

used to d escri be the e lectri cal ch aracteris tics o f a CAN

transceiver device. These terms and definitions are

summarized in this section.

2.1.1 BUS VOLTAGE

VCANL and VCANH denote the voltages of the bus line

wires CANL and CANH relative to ground of each

individual CAN node.

2.1.2 COMMON MO DE BUS VOLTAGE

RANGE

Boundary voltage levels of VCANL and VCANH with

respect to ground, for wh ich proper operation will occur ,

if up to the maximum number of CAN nodes are

connec ted to the bus.

2.1.3 DIFFERENTIAL INTERNAL

CAPACITANCE, CDIFF

(OF A CAN NODE)

Capacitance seen between CANL and CANH during

the Recessive state when the CAN node is

disconnected from the bus (see Figure 2-1).

2.1.4 DIFFERENTIAL INTERNAL

RESISTANCE, RDIFF

(OF A CAN NODE)

Resis ta nce see n betwe en CANL an d CANH du ring the

Recessive state when the CAN node is disconnected

from the bus (see Figure 2-1).

2.1.5 DIFFERENTIAL VOLTAGE, VDIFF

(OF CAN BU S)

Differential voltage of the two-wire CAN bus, value

VDIFF = VCANH - VCANL.

2.1.6 INTERNAL CAPACITANCE, CIN

(OF A CAN NODE)

Capacitance seen between CANL (or CANH) and

groun d during the Reces sive st ate wh en the CA N node

is disconnected from the bus (see Figure 2-1).

2.1.7 INTERNAL RESISTANCE, RIN

(OF A CAN NODE)

Resistance seen between CANL (or CANH) and

groun d during the Reces sive st ate wh en the CA N node

is disconnected from the bus (see Figure 2-1).

FIGURE 2-1: PHYSICAL LAYER

DEFINITIONS

RIN

RIN RDIFF

CIN CIN

CDIFF

CANL

CANH

GROUND

ECU

MCP2551

Absolute Maximum Ratings†

VDD.............................................................................................................................................................................7.0V

DC Voltage at TXD, RXD, VREF and VS............................................................................................ -0.3V to VDD + 0.3V

DC Voltage at CANH, CANL (Note 1)..........................................................................................................-42V to +42V

Transient Voltage on Pins 6 and 7 (Note 2).............................................................................................-250V to +250V

Storage temperature ...............................................................................................................................-55°C to +150°C

Operati ng amb ie nt temp era ture...................................... ............................ ................................ ............-40°C to +125°C

Virtual Junction Temperature, TVJ (Note 3).............................................................................................-40°C to +150°C

Soldering temperature of leads (10 seconds).......................................................................................................+300°C

ESD protection on CANH and CANL pins (Note 4) ...................................................................................................6 kV

ESD protection on all other pins (Note 4) ..................................................................................................................4 kV

Note 1: Short-circuit applied when TXD is High and Low.

2: In accordance with ISO-7637.

3: In accordance with IEC 60747-1.

4: Classification A: Human Body Model.

† NOTICE: Stresses above those listed under “Maximum ratings” may cause permanent damage to the device. This

is a stres s ra tin g on ly a nd functio nal ope r ati on of the device at those or an y ot her c onditions abo ve those i ndi ca ted in

the opera tional li stings of this s pecificatio n is not implie d. Exposure to maximum ra ting conditi ons for extend ed periods

may affect devi ce re liabi lity.

MCP2551

2.2 DC Characteristics

DC Specifications Electrical Ch arac ter is tics :

Industrial (I): TAMB = -40°C to +85°C VDD = 4.5V to 5.5V

Extended (E): TAMB = -40°C to +125°C VDD = 4.5V to 5.5V

Param

No. Sym Characteristic Min Max Units Conditions

Supply

IDD Supply Current

— 75 mA Dominant; VTXD = 0.8V; VDD

D2 — 10 mA Recessive; V TXD = +2V;

RS = 47 kW

D3 —365µA

-40°C ≤ TAMB ≤ + 85°C, S tandby;

(Note 2)

—465µA

-40°C ≤ TAMB ≤ +125°C,

Standby; (Note 2)

D4 VPORH High-level of the Power-on

Reset comparator 3.8 4.3 V CANH, CANL output s are active

when VDD > VPORH

D5 VPORL Low-level of the Power-on

Reset comparator 3.4 4.0 V CANH, CANL outputs are not

active when VDD < VPORL

D6 VPORD Hysteresis of Power-on

Reset comparator 0.3 0.8 V Note 1

Bus Line (CANH; CANL) Transmitter

D7 VCANH(r);

VCANL(r)

CANH, CANL Recessive

bus voltage 2.0 3.0 V VTXD = VDD; no load.

D8 IO(CANH)(reces)

IO(CANL)(reces) Recessive output current -2 +2 mA -2V < V(CAHL,CANH) < +7V,

0V <VDD < 5.5V

D9 -10 +10 mA -5V < V(CANL,CANH) < +40V,

0V <VDD < 5.5V

D10 VO(CANH)CA NH Dominant

output voltage 2.75 4.5 V VTXD = 0.8V

D11 VO(CANL)CANL Dominant

output voltage 0.5 2.25 V VTXD = 0.8V

D12 VDIFF(r)(o) Recessive differential

output voltage -500 +50 mV VTXD = 2V; no loa d

D13 VDIFF(d)(o) Dominant differential

output voltage 1.5 3.0 V VTXD = 0.8V; VDD = 5V

40W < RL < 60W (Note 2)

D14 IO(SC)(CANH)CANH short-circuit

output cur rent

— -200 mA VCANH = -5V

D15 — -100

(typical) mA VCANH = -40V, +40V. (Note 1)

D16 IO(SC)(CANL)l CANL short-circuit

output cur rent —200mAV

CANL = -40V, +40V. (Note 1)

D17 VDIFF(r)(i) Recessive differential

input voltage

-1.0 +0.5 V -2V < V(CANL, CANH) < +7V

(Note 3)

-1.0 +0.4 V -12V < V(CANL, CANH) < +12V

(Note 3)

Note 1: This parameter is periodically sampled and not 100% tested.

2: ITXD = IRXD = IVREF = 0 mA; 0V < VCANL < VDD; 0V < VCANH < VDD; V RS = VDD.

3: This is valid for the receiver in all modes; High-speed, Slope-control and Standby.

MCP2551

Bus Line (CANH; CANL) Receiver: [TXD = 2V; pins 6 and 7 externally driven]

D18 VDIFF(d)(i) Dominant differential

input voltage

0.9 5.0 V -2V < V(CANL, CANH) < +7V

(Note 3)

1.0 5.0 V -12V < V(CANL, CANH) < +12V

(Note 3)

D19 VDIFF(h)(i) Differential input hysteresis 100 200 mV See Figure 2-3 (Note 1)

D20 RIN CANH, CANL Common-

mode input resistance 550kW

D21 RIN(d) Deviation between C AN H

and CANL Common-mode

input resistance -3 +3 % VCANH = VCANL

Bus Line (CANH; CANL) Receiver: [TXD = 2V; pins 6 and 7 externally driven]

D22 RDIFF Differential input resistance 20 100 kW

D24 ILI CANH, CANL input leakage

current —150µA

VDD < VPOR;

VCANH = VCANL = +5V

Transmitter Data Input (TXD)

D25 VIH High-level input voltage 2.0 VDD V Output Recessive

D26 VIL Low-level input voltage VSS +0.8 V Output Dominant

D27 IIH High-level input current -1 +1 µA VTXD = VDD

D28 IIL Low-level input current -100 -400 µA VTXD = 0V

Receiver Data Output (RXD)

D31 VOH High-level output voltage 0.7 VD

D—VIOH = 8 mA

D32 VOL Low-level output voltage — 0.8 V IOL = 8 mA

Volt a ge Refer en ce Ou tput (VREF)

D33 VREF Reference output voltage 0.45 V

DD 0.55 VD

DV-50µA < IVREF < 50 µA

Standby/Slope-Control (RS pin)

D34 VSTB Input voltage for standby

mode 0.75 V

DD —V

D35 ISLOPE Slope-control mo de curre nt -10 -200 µ A

D36 VSLOPE Slope-cont rol mo de vol t ag e 0.4 VD

D0.6 VDD V

Thermal Shutdown

D37 TJ(sd) Shutdown junction

temperature 155 180 oCNote 1

D38 TJ(h) Shutdown temperature

hysteresis 20 30 oC -12V < V(CANL, CANH) < +12V

(Note 3)

2.2 DC Characteristics (Continued)

DC Specifications (Continued) Electrical Ch arac ter is tics :

Industrial (I): TAMB = -40°C to +85°C VDD = 4.5V to 5.5V

Extended (E): TAMB = -40°C to +125°C VDD = 4.5V to 5.5V

Param

No. Sym Characteristic Min Max Units Conditions

Note 1: This parameter is periodically sampled and not 100% tested.

2: ITXD = IRXD = IVREF = 0 mA; 0V < VCANL < VDD; 0V < VCANH < VDD; V RS = VDD.

3: This is valid for the receiver in all modes; High-speed, Slope-control and Standby.

MCP2551

FIGURE 2-1: TEST CIRCUIT FOR ELECTRICAL CHARACTERISTICS

FIGURE 2-2: TEST CIRCUIT FOR AUTOMOTIVE TRANSIENTS

FIGURE 2-3: HYSTERES IS OF THE RECEIVE R

Rext

GND

RXD

VREF

TXD

60 Ω100 pF

30 pF

CANH

CANL

CAN

Transceiver

Note: RS may be connected to VDD or GND via a load resistor depending on desired

operating mode as descri be d in Section 1.7.3 “Supply Voltage (VDD)”.

0.1µF

VDD

Rext

GND

RXD

VREF

TXD

60Ω

500 pF

Note: RS may be connected to VDD or

GND via a load resistor depending

on desired operating mode as

described in Section 1.7.8 “Slope

Resistor Input (Rs)”.

CANH

CANL

CAN

Transceiver

Schaffner

Generator

The wave forms of the applied transients shall be in accordance with “ISO-7637, Part 1”, test pulses 1, 2, 3a and 3b.

VOH

VOL

0.5 0.9

hysteresis

D19

VDIFF (V)

RXD (receive data

output voltage) VDIFF (r)(i) VDIFF (d)(i)

MCP2551

2.3 AC Characteristics

AC Specifications Electrical Charact eris tics:

Industrial (I): TAMB = -40°C to +85°C VDD = 4.5V to 5.5V

Extended (E): TAMB = -40°C to +125°C VDD = 4.5V to 5.5V

Param

No. Sym Characteristic Min Max Units Conditions

BIT Bit time 1 62.5 µs VRS = 0V

2fBIT Bit frequency 16 1000 kHz VRS = 0V

3 TtxL2bus(d) Delay TXD to bus active — 70 ns -40°C ≤ TAMB ≤ +125°C,

VRS = 0V

4 TtxH2bus(r) Delay TXD to bus inactive — 125 ns -40°C ≤ TAMB ≤ +85°C,

VRS = 0V

— 170 ns -40°C ≤ TAMB ≤ +125°C,

VRS = 0V

5 TtxL2rx(d) Delay TXD to receive active — 130 ns -40°C ≤ TAMB ≤ +125°C,

VRS = 0V

— 250 ns -40°C ≤ TAMB ≤ +125°C,

RS = 47 kΩ

6 TtxH2rx(r) Delay TXD to receiver

inactive

— 175 ns -40°C ≤ TAMB ≤ +85°C,

VRS = 0V

— 225 ns -40°C ≤ TAMB ≤ +85°C,

RS = 47 kΩ

— 235 ns -40°C ≤ TAMB ≤ +125°C,

VRS = 0V

— 400 ns -40°C ≤ TAMB ≤ +125°C,

RS = 47 kΩ

7 SR CANH, CANL slew rate 5.5 8.5 V/µs Refer to Figure 2-1;

RS = 47 kΩ, (Note 1)

10 tWAKE Wake-up time from standby

(Rs pin) —5µsSee Figure 2-5

11 TbusD2rx(s) Bus Domin ant to RXD Low

(Standby mode) — 550 ns VRS = +4V; (See Figure 2-6)

12 CIN(CANH)

CIN(CANL)CANH; CANL input

capacitance —20

(typical) pF 1 Mb/s data rate;

VTXD = VDD, (Note 1)

13 CDIFF Differential input

capacitance —10

(typical) pF 1 Mb/s data rate

(Note 1)

14 TtxL2busZ TX Permanent Dominant

Timer Disable Time 1.25 4 ms

15 TtxR2pdt(res) TX Permanent Dominant

Timer Reset Time —1µs

Rising edge on TXD while

device is in permanent

Dominant state

Note 1: This parameter is periodically sampled and not 100% tested.

MCP2551

2.4 Timing Diagrams and Specifications

FIGURE 2-4: TIMING DIAGRAM FOR AC CHARACTERISTICS

FIGURE 2-5: TIMING DIAGRAM FOR WAKE-UP FROM STANDBY

FIGURE 2-6: TIMING DIAGRAM FOR BUS DOMINANT TO RXD LOW (STANDBY MODE)

546

0.9V 0.5V

VDD

TXD (transmit data

input voltage)

VDIFF (CANH,

CANL differential

voltage)

RXD (receive dat a

output voltage) 0.3 VDD 0.7 VDD

VTXD = 0.8V 10

VDD

VRS Slope resistor

input voltage

VRXD Receive data

output voltage

0.6 VDD

0.3 VDD

VRS = 4V; VTXD = 2V

1.5V

VDIFF, Differential

voltage

Receive data

output vol t ag e

0.9V

0.3 VDD

MCP2551

NOTES:

MCP2551

3.0 PACKAGING INFORMATION

3.1 Package Marking Information

XXXXXXXX

XXXXXNNN

YYWW

8-Lead PDIP (300 mil) Example:

8-Lead SOIC (150 mil) Example:

XXXXXXXX

XXXXYYWW

NNN

MCP2551

I/P ^^256

1019

MCP2551E

SN ^^1019

256

Legend: XX...X Customer-specific information

Y Year code (last digit of calendar year)

YY Year code (last 2 digits of calendar year)

WW Week code (week of January 1 is week ‘01’)

NNN Alphanumeric traceability code

Pb-free JEDEC designator for Matte Tin (Sn)

*This package is Pb-free. The Pb-free JEDEC designator ( )

can be found on the outer packaging for this package.

Note: In the event th e full Mi croch ip pa rt numbe r can not be ma rked on one line , it will

be carried over to the next line, thus limiting the number of available

characters for customer-specific information.

MCP2551

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  !"#$%&"' ()"&'"!&)&#*&&&#

 +%&,&!&

- '!!#.#&"#'#%!&"!!#%!&"!!!&$#/!#

 '!#&.0

1,21!'!&$& "!**&"&&!

 3&'!&"&4#*!(!!&4%&&#&

&&255***''54

6&! 7,8.

'!9'&! 7 7: ;

7"')%! 7 <

&  1,

&&  = = 

##44!!   - 

1!&&   = =

"#&"#>#& .  - -

##4>#& .   <

: 9&  -< -? 

&& 9  - 

9#4!!  <  

69#>#& )  ? 

9*9#>#& )  < 

: *+ 1 = = -

NOTE 1

  * ,<

MCP2551

 ! ""#$%& !'



  !"#$%&"' ()"&'"!&)&#*&&&#

 +%&,&!&

- '!!#.#&"#'#%!&"!!#%!&"!!!&$#''!#

 '!#&.0

1,2 1!'!&$& "!**&"&&!

.32 %'!("!"*&"&&(%%'&"!!

&&255***''54

6&! 99..

'!9'&! 7 7: ;

7"')%! 7 <

&  1,

: 8&  = = 

##44!!   = =

&#%%+  = 

: >#& . ?1,

##4>#& . -1,

: 9&  1,

,'%@&A   = 

3&9& 9  = 

3&& 9 .3

3& IB = <B

9#4!!   = 

9#>#& ) - = 

#%& DB = B

#%&1&&' EB = B

NOTE 1

12 3

  * ,1

MCP2551

 ! ""#$%& !'

&&255***''54

MCP2551

APPENDIX A: REVISION HISTORY

Revision F (July 2010)