sh6612a SinoWealth Micro-Electronics Corp. Ltd, sh6612a Datasheet - Page 2

• Manufacturer Part Number: sh6612a
• Description: 2k 4-bit Microcontroller With Lcd Driver
• Manufacturer: SinoWealth Micro-Electronics Corp. Ltd

Block Diagram
Pad Description
Total 52 pads for mask type.
Pad No.
52 - 29
10 - 13
14 - 17
18 - 21
28 - 25
2 - 1,
6 - 9
22
22
23
24
3
4
5
5
RESET
GND
Designation
PORTC0 - 3
PORTD0 - 3
PORTA0 - 3
PORTB0 - 3
SEG1 - 26
COM1 - 4
RESET
OSCO
TEST
OSCI
GND
V
B0
B1
DD
CPU CORE
I/O
I/O
I/O
I/O
I/O
O
O
O
P
P
I
I
I
I
I
Segment signal output for LCD display. Seg1 - 4 as output
Test pin internally pull-down ( No connect for user)
Pad reset input
Power pin
Bonding option, internally pull-low
Bit programmable I/O
PA.0 could be external interrupt input( INT )
PA.1, PA.2 could be buzzer output PA.1 (BD), PA.2 ( BD )
Bit programmable I/O, vector interrupt (active falling edge)
Bit programmable I/O
Bit programmable I/O
Ground pin
Bonding option, internally pull-high
Oscillator output pin, connected to crystal oscillator
Oscillator input pin, connected to crystal or external resistor
Common signal output for LCD display
GENERATOR
LCD VOLTAGE DIVIDER
CPU OPERATING VOLTAGE &
ALARM
RAM
LCD
PORTA or extemal INT
I/O PORTS (3*4)
8-Bit TIMER (2)
ROM (2048 X 16)
RAM (256 X 4 )
2/24
Description
COMMON
DRIVERS
SEGMENT
DRIVERS
OSC
SEG1 - SEG26
PORTA.3
COM1 - COM4
TEST
OSCI
OSCO
PORTB, PORTC
PORTA.0 (INT)
PORTA.1(BD)
PORTA.2 (BD)
PORTD
SH6612A
Ver 0.3