HD404668 データシートの表示（PDF） - Hitachi -> Renesas Electronics

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HD404668

Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit

Hitachi -> Renesas Electronics 

HD404669 Series

Pin Description

Pin Number

Item

Symbol

FP-64A, chip I/O Function

Power

VCC

59

supply

GND

8

–

Applies power voltage

–

Connected to ground

Test

TEST

2

Reset

RESET

5

I

Used for factory testing only: Connect this pin to VCC

I

Resets the MCU

Oscillator OSC1

3

I

Input/output pins for the internal oscillator circuit:

Connect them to a ceramic oscillator ,crystal

oscillator or connect OSC1 to an external oscillator

circuit

OSC2

4

X1

6

O

I

Used for a 32.768-kHz crystal for clock purposes.

If not to be used, fix the X1 pin to VCC and leave

the X2 pin open.

X2

7

O

Port

D0–D5,

D9–D11

9-17

I/O Input/output pins addressed by individual bits; D0 to D3 are

source high-current input/output pins. A maximum 10 mA

current can be supplied to each pin.

D4, D5, and D9 to D11 are sink high-current input/output pins. A

maximum 15 mA current can be supplied to each pin.

Interrupt

Stop clear

D12, D13

R00–R43,

R60–RA1

RD0, RD1, RE0

INT0, INT1,

INT2–INT4

STOPC

18, 19

20–57

63, 64, 1

19-23

18

I

Input pins addressable by individual bits

I/O Input/output pins addressable in 4-bit units

I

Input pins addressable in 4-bit units

I

Input pins for external interrupts

I

Input pin for transition from stop mode to active mode

Serial

interface

Timer

SCK1

SI1

SO1

TOC, TOD

37

38

39

35, 34

I/O Serial interface clock input/output pin

I

Serial interface receive data input pin

O

Serial interface transmit data output pin

O

Timer output pins

EVND

36

I

Event input pin

DTMF

TONER

61

O

Output pin for DTMF row signals

TONEC

60

O

Output pin for DTMF column signals

VTref

62

–

Reference voltage pin for DTMF signals.

Voltage conditions are: VCC ≥ VTref ≥ GND

7

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