IRMCK371_15 Datasheet, PDF (10/33 Pages) International Rectifier – Sensorless Motor Control IC

4.1 8051 Peripheral Interface Group
UART Interface
P1.2/TXD
P1.1/RXD
Output, Transmit data from IRMCK371, can be configured as P1.2
Input, Receive data to IRMCK371, can be configured as P1.1
Discrete I/O Interface
P1.0/T2
Input/output port 1.0, can be configured as Timer 2 input
P1.1/RXD
Input/output port 1.1, can be configured as RXD input
P1.2/TXD
Input/output port 1.2, can be configured as TXD output
P1.3/SYNC/SCK Input/output port 1.3, can be configured as SYNC output or SPI clock
P1.4/CAP
Input/output port 1.4, can be configured as Capture Timer input
P2.0/NMI
Input/output port 2.0, can be configured as non-maskable interrupt input
P2.1
Input/output port 2.1
P3.0/INT2/CS1 Input/output port 3.0, can be configured as INT2 input or SPI chip select
1
P3.2/INT0
Input/output port 3.2, can be configured as INT0 input
Analog Output Interface
AOPWM
Output, PWM output 0, 8-bit resolution, configurable carrier frequency
Crystal Interface
XTAL0
XTAL1
Input, connected to crystal
Output, connected to crystal
Reset Interface
RESET
Inout, system reset, needs to be pulled up to VDD1 but doesn’t require
external RC time constant
I²C/SPI Interface
SCL/SO-SI
Input/output, I²C clock output or SPI data
SDA/CS0
Input/output, I²C Data line or SPI chip select 0
P3.0/INT2/CS1 Input/output, INT2 or SPI chip select 1
P1.3/SYNC/SCK Input/output, SYNC output or SPI clock, needs to be pulled up to VDD1
in order to boot from I²C EEPROM
4.2 Motion Peripheral Interface Group
PWM
PWMUH
PWMUL
PWMVH
PWMVL
PWMWH
PWMWL
Output, PWM phase U high side gate signal
Output, PWM phase U low side gate signal
Output, PWM phase V high side gate signal
Output, PWM phase V low side gate signal
Output, PWM phase W high side gate signal
Output, PWM phase W low side gate signal
Fault
GATEKILL
Input, upon assertion, this negates all six PWM signals, programmable
logic sense
Rev 1.0