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PDF SPL081A Data sheet ( Hoja de datos )
| Número de pieza | SPL081A | |
| Descripción | Low Voltage 7KB LCD Controller | |
| Fabricantes | SunPlus | |
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SPL081A
Low Voltage 7KB LCD Controller
AUG. 27, 2001
Version 1.1
SUNPLUS TECHNOLOGY CO. reserves the right to change this documentation without prior notice. Information provided by SUNPLUS TECHNOLOGY CO.
is believed to be accurate and reliable. However, SUNPLUS TECHNOLOGY CO. makes no warranty for any errors which may appear in this document.
Contact SUNPLUS TECHNOLOGY CO. to obtain the latest version of device specifications before placing your order. No responsibility is assumed by
SUNPLUS TECHNOLOGY CO. for any infringement of patent or other rights of third parties which may result from its use. In addition, SUNPLUS products
are not authorized for use as critical components in life support devices/ systems or aviation devices/systems, where a malfunction or failure of the product may
reasonably be expected to result in significant injury to the user, without the express written approval of Sunplus.
1 page  
SPL081A
5. FUNCTIONAL DESCRIPTIONS
5.1. ROM Area
The SPL081A provides 7.5K-byte ROM with a LCD driver that is
capable of controlling 4(or 5) commons and 32 segments.
(Basically, 7K bytes of ROM is available for application program
and data, 0.5K bytes is allocated for test program.)
5.2. Stop Clock Mode
The SPL081A provides a power saving mode for those
applications required very low stand-by current. Users can
simply enable the wake-up sources to stop the CPU clock by
writing the STOP CLOCK Register ($09). By doing that, CPU will
go to standby mode and the RAM and I/Os remain in their
previous states until being woken up. There are three wake-up
sources in the SPL081A, Port EFB wake-up, TIMER wake-up and
T2Hz or T16Hz wake-up. After the SPL081A is woken up, CPU
will go to the next state of Sleep. Wake-up action will not affect
both RAM and I/Os.
Note1: T16Hz: 32Hz, 16Hz, 8Hz or 4Hz
Note2: T2Hz: 2Hz or 1Hz
5.3. Timer/Counter
The SPL081A contains an 8-bit timer. In the timer mode, TMA is
a re-loadable up-counter. It will automatically be reloaded with
the user’s preset value and up-count again.
The clock source is selected as the following:
Timer/Counter Addr.
Clock Source
CPU CLOCK (T) or CLK32K
TMA 8-BIT TIMER $0025
(32768Hz or CPU clock / 8)
5.4. LCD Controller
SPL081A contains a LCD controller/driver that provides the
capability of driving 5 commons and 32 segments LCD. To light
the overhead of CPU, a display buffer is designed for mapping to
LCD. A LCD dot/pattern is set ON or OFF by programming the
corresponding bit of the display buffer. To make the chip more
flexible, the pin SEG31, 30, 29, 28, can be selected as I/O pins by
mask option. In addition, the LCD bias can be programmed as
1/2 or 1/3. The duty can be selected as 1/2, 1/3, 1/4 or 1/5.
5.5. Map of Memory and I/Os
* I/O PORT:
― PORT ABB $0002
EFB $0003
CDB $0005
― I/O CONFIG $0000
$0001
$0006
* NMI SOURCE:
― INT1 (from TIMER)
*INT SOURCE
― INT0 (from TIMER)
― 128 Hz
― 2 KHz
― TYHz (32Hz, 16Hz, 8Hz, 4Hz)
― TXHz (2 Hz or 1Hz)
― EXTERNAL (CDB1)
*MEMORY MAP
$0000
$0080
H/W REGISTER, I/Os
$00FF
$0200
$05FF
$0600
$1FFF
USER RAM and STACK
UNUSED
SUNPLUS TEST
PROGRAM
USER'S PROGRAM
DATA AREA
© Sunplus Technology Co., Ltd.
Proprietary & Confidential
5
AUG. 27, 2001
Version: 1.1
5 Page 
SPL081A
10. REVISION HISTORY
Date
Revision #
Description
JUL. 28, 1998
0.1 Original
AUG. 18, 1998
0.2 Modify CPU frequency: 0.3MHz @ 1.5V -> 300KHz or 550KHz (mask option) in the
“FEATURES”
OCT. 27, 1998
0.3 1. Modify CPU frequency: 550KHz -> 500KHz
2. Add “PAD ASSIGNMENT AND LOCATIONS”
JAN. 12, 1999
0.4 Correct chip size: 2440µm X 2020µm
OCT. 20, 1999
0.5 Add “Iop Condition” description in the “DC CHARACTERISTICS”
MAY. 15, 2001
1.0 1. Delete “PRELIMINARY”
2. Add “Note: The 0.1µF capacitor between VDD and VSS…”
3. Add “10. REVISION HISTORY”
4. Renew to a new document format
AUG. 27, 2001
1.1 1. Add Note1 in the “8.1 PAD Assignment”
2. Renew to a new document format
Page
6, 7
10
8
© Sunplus Technology Co., Ltd.
Proprietary & Confidential
11
AUG. 27, 2001
Version: 1.1
11 Page | ||
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| PDF Descargar | [ Datasheet SPL081A.PDF ] | |
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