IRMCF371

8

4 Input/Output of IRMCF371

All I/O signals of IRMCF371 are shown in Figure 4. All I/O pins are 3.3V logic interface except

A/D interface pins.

P1.2/TXD

P1.1/RXD

P1.0/T2

P1.3/SYNC/SCK

P2.0/NMI

P1.4/CAP

P2.1

P5.3/TDI

TCK

P5.1/TMS

PWMUH

PWMUL

PWMVH

PWMVL

PWMWH

PWMWL

GATEKILL

IFB+

IFB-

IFBO

AIN0

AIN1

PWM gate signal

Interface

A/D Interface

Discrete I/O

JTAG port

P5.2/TDO

UART

Interface

XTAL0

XTAL1

Crystal

P2.6/AOPWM

D/A Interface

(PWM output)

RESET

System Reset

AIN2

AVDD(1.8V)

AVSS

AREF

CMEXT

VDD1(3.3V)

VDD2(1.8V)

VSS

Digital power/

ground

TSTMOD

Test Mode

(must be tied to VSS)

PLLVDD(1.8V)

PLLVSS

PLL power/

ground

P3.2/INT0

Analog power/

ground

SCL/SO-SI

SDA/CS0

I2C

Interface

P3.0/INT2/CS1

Figure 4.

Input/Output of IRMCF371

4.1

8051 Peripheral Interface Group

UART Interface

P1.2/TXD

Output, Transmit data from IRMCF371, can be configured as P1.2

P1.1/RXD

Input, Receive data to IRMCF371, 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