7220 datasheet(145/303 Pages) RENESAS

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M37220M3-XXXSP/FP

4.3 Pin description

4-7

7220 Group User’s Manual

Port P2 is an 8-bit I/O port and has basically the same functions as

port P0. The output structure is CMOS output.

Pins P23, P24 are also used as external clock input pins TIM3, TIM2

respectively.

P20 pin is also used as serial I/O synchronous clock input/output pin

SCLK. The output structure is N-channel open-drain output.

Pins P21, P22 are also used as serial I/O data input/output pins SOUT,

SIN respectively. The output structure is N-channel open-drain output.

Ports P30–P32 are 3-bit I/O ports and have basically the same functions

as port P0. Either CMOS output or N-channel open-drain output structure

can be selected as the port P30 and P31. The output structure of port

P32 is N-channel open-drain output.

Pins P30, P31 are also used as analog input pins A-D5, A-D6 respectively.

Pins P30, P31 are also used as D-A conversion output pins DA1, DA2

respectively.

Ports P33, P34 are 2-bit input ports.

P33 pin is also used as CRT display clock input pin OSC1.

P34 pin is also used as CRT display clock output pin OSC2. The

output structure is CMOS output.

Ports P52–P55 are 4-bit output ports. The output structure is CMOS

output.

Pins P52–P55 are also used as CRT output pins R, G, B, OUT respectively.

The output structure is CMOS output.

This is a horizontal synchronous signal input for CRT.

This is a vertical synchronous signal input for CRT.

This is a 14-bit PWM output pin.

I/O

Input

I/O

Input

Output

Input

Output

Input

Output

P20/SCLK,

P21/SOUT,

P22/SIN,

P23/TIM3,

P24/TIM2,

P25–P27

P3 0/A-D5/

DA1,

P3 1/A-D6/

DA2, P32

P33/OSC1,

P34/OSC2

P52/R,

P53/G,

P54/B,

P55/OUT

HSYNC

VSYNC

D-A

I/O port P2

External clock

input

Serial I/O

synchronous

clock input/

output

Serial I/O data

input/output

I/O port P3

Analog input

D-A conversion

output

Input port P3

Clock input for

CRT display

Clock output for

CRT display

Output port P5

CRT output

HSYNC input

VSYNC input

DA output

Table 4.3.2 Pin description (2)

Name

Input/

Output

Functions

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