
IRMCF343
This document is the property of International Rectifier and may not be copied or distributed without expressed consent. 
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 TABLE OF CONTENTS 
1 
2 
3 
4 
Overview......................................................................................................................................4 
IRMCF343 Block Diagram and Main Functions ........................................................................5 
Pinout...........................................................................................................................................7 
Input/Output of IRMCF343.........................................................................................................8 
4.1 
8051 Peripheral Interface Group...........................................................................................8 
4.2 
Motion Peripheral Interface Group.......................................................................................9 
4.3 
Analog Interface Group ......................................................................................................10 
4.4 
Power Interface Group........................................................................................................10 
4.5 
Test Interface Group...........................................................................................................11 
Application Connections ...........................................................................................................12 
DC Characteristics.....................................................................................................................13 
6.1 
Absolute Maximum Ratings ...............................................................................................13 
6.2 
System Clock Frequency and Power Consumption............................................................13 
6.3 
Digital I/O DC Characteristics............................................................................................14 
6.4 
PLL and Oscillator DC Characteristics...............................................................................15 
6.5 
Analog I/O DC Characteristics...........................................................................................15 
6.6 
Analog I/O DC Characteristics...........................................................................................16 
6.7 
Under Voltage Lockout DC Characteristics.......................................................................17 
6.8 
CMEXT and AREF Characteristics....................................................................................17 
AC Characteristics.....................................................................................................................18 
7.1 
PLL AC Characteristics......................................................................................................18 
7.2 
Analog to Digital Converter AC Characteristics................................................................19 
7.3 
Op Amp AC Characteristics ...............................................................................................20 
7.4 
Op Amp AC Characteristics ...............................................................................................20 
7.5 
SYNC to SVPWM and A/D Conversion AC Timing.........................................................21 
7.6 
GATEKILL to SVPWM AC Timing..................................................................................22 
7.7 
Interrupt AC Timing ...........................................................................................................23 
7.8 
I
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C AC Timing....................................................................................................................24 
7.9 
SPI AC Timing....................................................................................................................25 
7.9.1 
SPI Write AC timing....................................................................................................25 
7.9.2 
SPI Read AC Timing....................................................................................................26 
7.10 
UART AC Timing...........................................................................................................27 
7.11 
CAPTURE Input AC Timing ..........................................................................................28 
7.12 
JTAG AC Timing............................................................................................................29 
Pin List.......................................................................................................................................30 
Package Dimensions..................................................................................................................33 
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Part Marking Information.......................................................................................................34 
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