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参数资料
| 型号： | SPL081A |
| 厂商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Low Voltage 7KB LCD Controller |
| 中文描述： | 低压7KB LCD控制器 |
| 文件页数： | 3/11页 |
| 文件大小： | 567K |
| 代理商： | SPL081A |
SPL081A
LOW VOLTAGE 7KB LCD CONTROLLER
1. GENERAL DESCRIPTION
SPL081A, a special designed CMOS 8-bit microprocessor by
Sunplus, offers the best cost/performance ratio in the industry. It
combines RAM, ROM, I/Os, an interrupt controller, and an
automatic display controller/driver in a small package. One of its
extraordinary features is the capability of operating in low voltage
range, from 1.2V - 1.7V. The Power Down Mode keeps LCD
being displayed when CPU is in standby mode, but consumes
only less than 3.5
μ
A. Not only SPL081A is capable of displaying
LCD, but it also can process complex instructions and functions as
well. The development team has designed SPL081A to cover
many application fields such as calculator, watch and other LCD
related products required only one battery supply.
2. FEATURES
!
Built-in 8-bit RISC processor
!
128-byte SRAM
!
7.5K-byte ROM
!
CPU frequency: 150KHz, 300KHz or 500KHz (mask option)
@ 1.5V (dependent VDD)
!
Built-in RC oscillator
!
Built-in 32.768KHz oscillator circuit for real clock function
!
Watch dog mode (1Hz or 0.5Hz)
!
Low operating voltage: 1.2V - 1.7V
!
Low standby current, I
STBY
< 1
μ
A
!
LCD matrix: 28 - 32 segments, 4(or 5) commons defined as I/O;
!
12 general I/O pins (segment 29, 30, 31, 32 can be
ABB1 can be optioned to 5
th
common)
!
LCD 1/2, 1/3 bias, 1/2, 1/3, 1/4, 1/5 (mask option) duty
!
One 8-bit timer
!
6 interrupt sources
(Timer, T16Hz, T2Hz, 128Hz, 2KHz, external interrupt)
!
Power down mode
(Wake-up source: key input, T2Hz, T16Hz, timer)
Note1:
T16Hz: 32Hz, 16Hz, 8Hz or 4Hz
Note2:
T2Hz: 2Hz or 1Hz
3. BLOCK DIAGRAM
X32I
X32O
8-BIT
RISC
PROCESSOR
OSC GEN
TIME BASE
&
INTERRUPT
LOGIC
12
I/O
P
O
R
T
ABB1 - 0 ( I/O )
EFB5 - 0 ( I )
CDB3 - 0 ( I/O )
32 SEGMENTS X 4 COMMONS LCD DRIVER
MASK OPTION
ONE
8-BIT
AUTO
RELOAD
TIMER
7.5K BYTES
ROM
128 BYTES
SRAM
SEG31- 0
SEG31 - 28
/ABB7 - 4
C4/ABB1
C3 - C0
Note1:
By mask option, SEG31 - 28 can be defined as either segment
output or I/O. (SEG31 - 28 or ABB7 - 4)
Note2:
By mask option, ABB1 can be defined as either I/O or common
output (ABB1 or common4)
Sunplus Technology Co., Ltd.
Proprietary & Confidential
3
AUG. 27, 2001
Version: 1.1
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