參數(shù)資料
型號: P83CL882
廠商: NXP Semiconductors N.V.
英文描述: 80C51 Ultra Low Power ULP telephony controller
中文描述: 80C51的超低功耗無鉛汽油電話控制器
文件頁數(shù): 19/88頁
文件大小: 328K
代理商: P83CL882
2001 Jun 19
19
Philips Semiconductors
Product specification
80C51 Ultra Low Power (ULP) telephony controller
P83CL882
6.2.5
W
AKE
-
UP
C
OUNTER
R
EGISTER
(WKCON)
Table 12
Wake-up Counter Register (SFR address DDH)
Table 13
Description of WKCON bits
7
6
5
4
3
2
1
0
WKCON.7
WKCON.6
WKCON.5
WKCON.4
WKCON.3
WKCON.2
WKCON.1
WKCON.0
BIT
SYMBOL
DESCRIPTION
7 to 0
WKCON.[7:0]
The wake-up delay can be calculated as follows: Wake-up
delay = (1024
4)
×
WKCON. Where WKCON is the content of the
Wake-up Counter Register.
WKCON = 00H: (default) wake-up delay = 1024 clocks
WKCON = CCH: wake-up delay = 208 clocks
WKCON = FFH: wake-up delay = 4 clocks.
MGT288
wake-up
event
programmable delay
oscillator stop
CPU
activity
CPU start
CLOCK
CPU stop
start
unstable clock
Fig.10 Wake-up timing from power-down.
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