HD404868 查看數據表（PDF） - Renesas Electronics

零件编号

产品描述 (功能)

生产厂家

HD404868

Low-Voltage AS Microcomputers with On-Chip LCD Circuit

Renesas Electronics 

HD404889/HD404899/HD404878/HD404868 Series

Pin Description

HD404889/HD404899/HD404878 Series

Item

Power supply

Test

Reset

Oscillation

Port

Interrupt

Wakeup

Serial interface

Timer

LCD

Pin Number

Symbol

FP-80A

TFP-80C I/O

Function

VCC

16

GND

12

—

Apply the power supply voltage to this pin.

—

Connect to ground.

TEST

9

Input Not for use by the user application. Connect to

GND potential.

RESET

15

Input Used to reset the MCU.

OSC1

10

OSC

11

2

Input Internal oscillator input/output pins. Connect a

Output ceramic resonator, crystal resonator, or external

oscillator circuit.

X1

14

Input Realtime clock oscillator input/output pins.

X2

13

Output Connect a 32.768 kHz crystal. If 32.768 kHz

crystal oscillation is not used, fix the ×1 pin to VCC

and leave the ×2 pin open.

D0–D11

17–28

I/O

I/O pins addressed bit by bit. D0 to D3 are large-

current source pins (max. 10 mA), and D4 to D11

are large-current sink pins (max. 15 mA).

R00–R63

R7 –R8

0

1

INT0,INT1

WU0–WU3

29–56, 2–7 I/O I/O pins, addressed in 4-bit units.

17,18

29–32

Input

Input

External interrupt input pins

Input pins used for transition from stop mode to

active mode.

SCK

38

I/O Serial interface clock I/O pin

SI

39

Input Serial interface receive data input pin

SO

39

Output Serial interface transmit data output pin

TOB,TOC

36,37

Output Timer output pins

EVNB,EVND 33,34

Input Event count input pins

V0–V3

80–77

COM1–COM4 73–76

—

Output

LCD driver power supply pins. The on-chip power

supply dividing resistor can be disconnected by

software. Power supply conditions are:

VCC≥V1≥V2≥V3≥GND.

LCD common signal pins

SEG1–SEG32 41–72

Output LCD segment signal pins

Rev.6.00, Sep.08.2003, page 19 of 197

Share Link: