EM78862C データシートの表示（PDF） - ELAN Microelectronics
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EM78862C Datasheet PDF : 42 Pages
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EM78862C
8-Bit RISC Type Microprocessor
4.1 Pin Description
Pin Name
VDD
GND
OSCI
OSCO
COM0 ~ COM15
SEG32 ~ SEG47
SEG64 ~ SEG79
PLLC
INT0
INT1
INT2
P7.0 ~ P7.7
P8.0 ~ P8.7
P9.0 ~ P9.7
C1A
C1B
C15 , C45
TEST
RESETB
Pin #
12
10
I/O Type
Power
Power
9
I
8
O
1
53~67
O
37 ~ 52
21 ~ 36
O
11
I
17 ~ 20
I
14 ~ 16
I
13
I
13 ~ 20
I/O
29 ~ 36
I/O
21 ~ 28
I/O
4
I
5
I
3,2
I
7
I
6
I
Description
Digital power and analog power
Digital and analog ground
Input pin for 32.768 kHz oscillatoror installing a
resistor for RC mode
Output pin for 32.768 KHz oscillator
Common driver pins of LCD driver
Segment driver pins of LCD driver
Phase loop lock capacitor. Connect a
capacitor 0.01µ to 0.047µ with GND
Interrupt sources which have the same
interrupt flag. Any pin from PORT70 to
PORT73 has a falling edge signal, it will
generate an interruption.
Interrupt sources which have the same
interrupt flag. Any pin from PORT74 to
PORT76 has a falling edge signal, it will
generate an interruption.
Interrupt source. Once PORT77 receives a
falling edge or rising edge signal (controlled
by CONT register), it will generate an
interruption.
PORT7 (INPUT or OUTPUT port per bit)
Internal Pull-high function
Key scan function
PORT8 (INPUT or OUTPUT port per bit)
Shared with LCD segment signals
PORT9 INPUT or OUTPUT port per bit
And is shared with Segment signal
Capacitor C1 (1µF) connector pin for Voltage
converter .
Capacitor C1 (1µF) connector pin for voltage
converter .
Connect each with a capacitor (1µF) to GND
for voltage converter pin.
Test pin during Test mode only. Normally
LOW
System reset pin ( LOW ACTIVE )
4•
Product Specification (V2.1) 07.13.2005
(This specification is subject to change without further notice)
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