UPD6P9 datasheet(8/73 Pages) RENESAS

8 / 73 page

µPD67, 67A, 68, 68A, 69

Data Sheet U14935EJ2V1DS

1. PIN FUNCTIONS

1.1 List of Pin Functions

Pin No.

Symbol

Function

Output Format

After Reset

1KI/O0 to KI/O7

CMOS

High-level output

push-pullNote 1

15 to 20

3S0

—

High-impedance

(OFF mode)

4S1/LED

CMOS push-pull

High-level output

(LED)

REM

CMOS push-pull

Low-level output

6VDD

——

7XOUT

—

Low level

8XIN

(oscillation stopped)

GND

——

—

Input

(high-impedance,

STOP mode

release cannot be

used)

11 to 14 KI0 to KI3Note 2

—

Input (low-level)

Notes 1. Be careful about this because the drive capacity of the low-level output side is held low.

2. In order to prevent malfunction, be sure to input a low level to one or more of pins KI0 to KI3 when

POC is released by supply voltage rising (Can be left open. When open, leave the pull-down resistor

connected).

8-bit I/O port. Input/output can be specified in 8-bit units.

In input mode, the use of a pull-down resistor can be

specified.

In output mode, these pins can be used as key scan

outputs from a key matrix.

Input port.

Can also be used as a key return input from a key matrix.

In input mode, the use of a pull-down resistor for the S0

and S1 ports can be specified by software in 2-bit units.

If input mode is canceled by software, this pin is placed

in OFF mode and enters a high-impedance state.

I/O port.

In input mode (S1), this pin can also be used as a key

return input from a key matrix.

The use of a pull-down resistor for the S0 and S1 ports

can

specified

software

2-bit

units.

In output mode (LED), this pin becomes the remote

control transmission display output (active low). When

the remote control carrier is output from the REM output,

this pin outputs a low level from the LED output in

synchronization with the REM signal.

Infrared remote control transmission output.

This output is active high.

Each carrier high-/low-level width can be freely set in

a range of 250 ns to 64

µs (@ fX = 4 MHz) by

software.

Power supply

Pins for connecting ceramic resonators for the system

clock.

A capacitor (15 pF) for the oscillator can be specified by

a mask option.

GND

Input port.

The use of STOP mode release for the S2 port can be

specified by software. When used as a key input from

a key matrix, enable the use of STOP mode release (at

this time, a pull-down resistor is connected internally.)

When STOP mode release is disabled, this pin can be

used as an input port that does not release the STOP

mode even if the release condition is established

(at this time, a pull-down resistor is not connected internally.)

4-bit input port.

These pins can also be used as a key return inputs

from a key matrix. The use of a pull-down resistor

can be specified by software in 4-bit units.

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