M37225M6_15 datasheet(9/128 Pages) RENESAS

Part #	M37225M6

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

PDF	128 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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9 / 128 page

M37225M6/M8/MA/MC-XXXSP, M37225ECSP

Rev.1.00

Nov 01, 2000

page 7 of 124

REJ03B0136-0100Z

Name

Input/

Functions

Output

VCC,

Power source

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

VSS

CNVSS

This is connected to VSS.

______

RESET

Reset input

Input

To enter the reset state, the reset input pin must be kept at a LOW for 2

µs or more (under

normal VCC conditions).

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

be maintained for the required time.

XIN

Clock input

Input

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

Clock output

Output

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.

P00/PWM0–

I/O port P0

I/O

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

P05/PWM5,

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

P06/INT2/A-D4,

is N-channel open-drain output. (See note 1)

P07/INT1

PWM output

Output

Pins P00–P05 are also used as PWM output pins PWM0–PWM5 respectively. The output

structure is N-channel open-drain output.

External interrupt

Input

Pins P06 and P07 are also used as INT external interrupt input pins INT2 and INT1

input

respectively.

Analog input

Input

P06 pin is also used as analog input pin A-D4.

P10/OUT2/A-D8, I/O port P1

I/O

Port P1 is an 8-bit I/O port and has basically the same functions as port P0. The

P11/SCL1,

output structure is CMOS output. (See note 1)

P12/SCL2,

OSD output

Output

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

P13/SDA1,

Multi-master

I/O

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

P14/SDA2,

I2C-BUS interface

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

P15/INT3/A-D1, Analog input

Input

Pins P10, P15–P17 are also used as analog input pin A-D8, A-D1–A-D3 respectively.

P16/A-D2,

External interrupt

Input

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

P17/DA2/A-D3

input

DA output

Output

Pins P17 is also used as 14-bit PWM output pin DA2. The output structure is CMOS output.

P20/SCLK,

I/O port P2

I/O

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

The P21/SOUT(/SIN), output structure is CMOS output. (See note 1)

P22/SIN,

Serial I/O synchronous

I/O

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

P23/TIM3,

clock input/output port

structure is N-channel open-drain output.

P24/TIM2,

Serial I/O data

I/O

P21 pin is also used as serial I/O data input/output pin SOUT (/SIN). The output

P25–P27

input/output

structure is N-channel open-drain output.

Serial I/O data input

Input

P22 pin is also used as serial I/O data input pin SIN.

External clock

Input

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

input for timer

respectively.

P30/A-D5,

I/O port P3

I/O

Ports P30–P32 and P35 are a 3-bit I/O port and has basically the same functions as port 0

P31/A-D6,

(see note 1). Either CMOS output or N-channel open-drain output structure can be selected

P32/A-D7,

as ports P30, P31 and P35. The output structure of port P3 2 is N-channel

DA1/P35

open-drain output structure.(See notes 1, 2)

Analog input

Input

Pins P30–P32 are also used as analog input pins A-D5–A-D7 respectively.

DA output

Output

P35 pin is also used as 14-bit PWM output pin DA1. The output structure is CMOS output. At

reset, output is undefined.

OSC1/P33, Input port P3

Input

Pins P33 and P34 are a 2-bit input port.

OSC2/P34, Clock input for OSD

Input

P33 pin is also used as OSD clock input pin OSC1.

Clock output for OSD

Output

P34 pin is also used as OSD clock output pin OSC2. The output structure is CMOS output.

7. PIN DESCRIPTION

Table 7.1 Pin Description

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