EM78862B データシートの表示（PDF） - ELAN Microelectronics

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EM78862B

8-Bit RISC Type Microprocessor

ELAN Microelectronics 

EM78862B

8-Bit RISC Type Microprocessor

4.1 Pin Description

Pin Name

VDD

GND

Pin #

12

61

I/O Type

Power

Power

OSCI

10

I

OSCO

11

O

COM0 ~ COM7, COM8 20 ~ 13, 63

O

SEG0 ~ SEG39

21 ~ 60

O

SEG40 ~ SEG59

71 ~90

O

PLLC

3

I

INT0 ~ INT3

91 ~ 94

I

P5.4 ~ P5.7

71 ~ 74

I/O

P6.0

63

I/O

P7.0 ~ P7.7

91 ~ 98

I/O

P8.0 ~ P8.7

75 ~ 82

I/O

P9.0 ~ P9.7

TEST

RESET

83 ~ 90

I/O

62

I

99

I

Description

Digital power and analog power

Digital and analog ground

Input pin for 32.768 KHz oscillator or

installing a resistor for RC mode

Output pin for 32.768 KHzoscillator

Common driver pins of LCD driver

Segment driver pins of LCD driver

Segment driver pins of LCD driver

Phase loop lock capacitor. Connect a capacitor

0.01u to 0.047u with GND

PORT 7 (0) ~ PORT 7 (3) Interrupt Signals

( FALLING EDGE )

PORT 5 (INPUT or OUTPUT port per bit).

Shared with LCD segment signals

PORT 6 (INPUT or OUTPUT port per bit).

Shared with LCD common signals

PORT 7 (INPUT or OUTPUT port per bit).

Internal Pull high function

Key scans function

PORT 8 (INPUT or OUTPUT port per bit)

Shared with LCD segment signals

PORT 9 (INPUT or OUTPUT port per bit)

“And” can be set as wake-up watchdog timer

“And” is shared with Segment signal

Test pin during test mode only. Normally low

System reset pin ( LOW ACTIVE )

This specification is subject to change without further notice.

Mar.01.2005 (V1.1) 3 of 36

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