M37212EFFP View Datasheet(PDF) - Renesas Electronics

Part Name

Description

Manufacturer

M37212EFFP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER

Renesas Electronics 

MITSUBISHI MICROCOMPUTERS

M37212M4/M8–XXXSP, M37212M6–XXXSP/FP

M37212EFSP/FP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER

with ON-SCREEN DISPLAY CONTROLLER

7. PIN DESCRIPTION

Table 7.1 Pin Description

Pin

Name

VCC,

VSS.

CNVSS

______

RESET

Power source

CNVSS

Reset input

Input/

Output

Input

XIN

XOUT

Clock input

Clock output

Input

Output

P00/PWM4– I/O port P0

P03/PWM7,

P04–P07

PWM output

I/O

Output

P10/OUT2/ I/O port P1

A-D8,

P11/SCL1, OSD output

P12/SCL2, Multi-master

P13/SDA1, I2C-BUS interface

P14/SDA2, Analog input

P15/INT3/

A-D1,

P16/A-D2,

P17/A-D3

Input port P1

Analog input

External interrupt

input

P20–P27 I/O port P2

I/O

Output

I/O

Input

Input

Input

Input

I/O

P30, P31 I/O port P3

I/O

P32/TIM2, Input port P3

P33/TIM3, External clock input

P34/INT1, External interrupt

P35/INT2/ input

A-D4,

Analog input

P36/OSC1, Clock input for

P37/OSC2 OSD display

Clock output for

OSD display

Input

Input

Input

Input

Input

Output

Functions

Apply voltage of 5 V ± 10 % to (typical) VCC, and 0 V to VSS.

This is connected to VSS.

To enter the reset state, the reset input pin must be kept at a “L” for 2 µs or more (under

normal VCC conditions).

If more time is needed for the quartz-crystal oscillator to stabilize, this “L” condition should

be maintained for the required time.

This chip has an internal clock generating circuit. To control generating frequency, an

external ceramic resonator or a quartz-crystal oscillator is connected between pins XIN and

XOUT. If an external clock is used, the clock source should be connected to the XIN pin and

the XOUT pin should be left open.

Port P0 is an 8-bit I/O port with direction register allowing each I/O bit to be individually

programmed as input or output. At reset, this port is set to input mode. The output structure

is N-channel open-drain output. (See note)

Pins P00–P03 are also used as PWM output pins PWM4–PWM7 respectively. The output

structure is N-channel open-drain output.

Port P10–P14 are a 5-bit I/O port and has basically the same functions as port P0. The

output structure is CMOS output.

Pins P10 is also used as OSD output pin OUT2. The output structure is CMOS output.

Pins P11–P14 are used as SCL1, SCL2, SDA1 and SDA2 respectively, when multi-master

I2C-BUS interface is used. The output structure is N-channel open-drain output.

P10 pin is also used as analog input pin A-D8.

Port P15–P17 are a 3-bit input port and has basically the same functions as port P0.

Pins P15–P17 are also used as analog input pins A-D1 to A-D3 respectively.

P15 pin is also used as INT external interrupt input pin INT3.

Port P2 is an 8-bit I/O port and has basically the same functions as port P0. The output

structure is CMOS output. (See note)

Ports P30, P31 are a 2-bit I/O port and has basically the same functions as port P0. The

output structure is CMOS output.

Ports P32–P37 are a 6-bit input port and has basically the same functions as port P0.

Pins P32, P33 are also used as external clock input pins TIM2, TIM3 respectively.

Pins P34, P35 are also used as INT external interrupt input pins INT1, INT2 respectively.

P35 pin is also used as analog input pin A-D4.

P36 pin is also used as OSD display clock input pin OSC1.

P37 pin is also used as OSD display clock output pin OSC2. The output structure is CMOS

output.

Rev. 1.0

8

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