SPC251A Sunplus Technology Co., Ltd., SPC251A Datasheet - Page 7
![no-image](/images/no-image-200.jpg)
SPC251A
Manufacturer Part Number
SPC251A
Description
256KB SOUND CONTROLLER
Manufacturer
Sunplus Technology Co., Ltd.
Datasheet
1.SPC251A.pdf
(15 pages)
6.11. Power Savings Mode
The SPC251A provides a power savings mode (Standby mode) for
those applications that require very low stand-by current.
enter standby mode, the Wake-Up Register should be enabled
and then stop the CPU clock by writing the STOP CLOCK
Register. The CPU will then go to the stand-by mode. In such a
mode, RAM and I/Os will remain in their previous states until being
T1 = 1 / (F
© Sunplus Technology Co., Ltd.
Proprietary & Confidential
CPU CLK
CPU
Reset
Sleep
), Tw ≧ 65536 x T1
T1
Wake-up
To
FIG. 1
T w
7
awakened.
SPC251A. After the SPC251A is awakened, the internal CPU will
go to the RESET State (Tw ≧ 65536 x T1) and then continue
processing the program. Wakeup Reset will not affect RAM or
I/Os (FIG.1).
Port IOD7-0 is the only wake-up source in the
SPC251A
SEP. 10, 2001
Version: 1.7