7220 Datasheet, PDF (145/303 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

M37220M3-XXXSP/FP
4.3 Pin description
Table 4.3.2 Pin description (2)
Input/
Pin
Name
Output
Functions
P20/SCLK, I/O port P2
I/O Port P2 is an 8-bit I/O port and has basically the same functions as
P21/SOUT,
port P0. The output structure is CMOS output.
P22/SIN, External clock Input Pins P23, P24 are also used as external clock input pins TIM3, TIM2
P23/TIM3, input
respectively.
P24/TIM2, Serial I/O
I/O P20 pin is also used as serial I/O synchronous clock input/output pin
P25–P27 synchronous
SCLK. The output structure is N-channel open-drain output.
clock input/
output
Serial I/O data I/O Pins P21, P22 are also used as serial I/O data input/output pins SOUT,
input/output
SIN respectively. The output structure is N-channel open-drain output.
P30/A-D5/ I/O port P3
I/O Ports P30–P32 are 3-bit I/O ports and have basically the same functions
DA1,
as port P0. Either CMOS output or N-channel open-drain output structure
P31/A-D6/
can be selected as the port P30 and P31. The output structure of port
DA2, P32
P32 is N-channel open-drain output.
Analog input Input Pins P30, P31 are also used as analog input pins A-D5, A-D6 respectively.
D-A conversion Output Pins P30, P31 are also used as D-A conversion output pins DA1, DA2
output
respectively.
P33/OSC1, Input port P3 Input Ports P33, P34 are 2-bit input ports.
P34/OSC2 Clock input for Input P33 pin is also used as CRT display clock input pin OSC1.
CRT display
Clock output for Output P34 pin is also used as CRT display clock output pin OSC2. The
CRT display
output structure is CMOS output.
P52/R,
Output port P5 Output Ports P52–P55 are 4-bit output ports. The output structure is CMOS
P53/G,
output.
P54/B,
CRT output Output Pins P52–P55 are also used as CRT output pins R, G, B, OUT respectively.
P55/OUT
The output structure is CMOS output.
HSYNC
HSYNC input
Input This is a horizontal synchronous signal input for CRT.
VSYNC
VSYNC input
Input This is a vertical synchronous signal input for CRT.
D-A
DA output
Output This is a 14-bit PWM output pin.
7220 Group User’s Manual
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