參數(shù)資料
型號: Z86L7208FSC
廠商: ZILOG INC
元件分類: 微控制器/微處理器
英文描述: IR MICROCONTROLLER
中文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP44
封裝: QFP-44
文件頁數(shù): 58/71頁
文件大?。?/td> 364K
代理商: Z86L7208FSC
Z86C72/C92/L72/L92
IR Microcontroller
Zilog
6-58
P R E L I M I N A R Y
DS97LVO0900
FUNCTIONAL DESCRIPTION
(Continued)
WDT Time Select (D0, D1).
Selects the WDT time period.
It is configured as shown in Table 6.
WDTMR During HALT (D2).
This bit determines whether
or not the WDT is active during HALT mode. A 1 indicates
active during HALT. The default is 1.
WDTMR During STOP (D3).
This bit determines whether
or not the WDT is active during STOP mode. Since the
XTAL clock is stopped during STOP mode, the on-board
RC has to be selected as the clock source to the
WDT/POR counter. A 1 indicates active during STOP. The
default is 1.
Clock Source for WDT (D4).
This bit determines which
oscillator source is used to clock the internal POR and
WDT counter chain. If the bit is a 1, the internal RC oscil-
lator is bypassed and the POR and WDT clock source is
driven from the external pin, XTAL1. The default configu-
ration of this bit is 0, which selects the RC oscillator.
Table 6. WDT Time Select
D1
0
0
1
1
D0
0
1
0
1
Time-Out of
Internal RC OSC
5 ms min
10 ms min
20 ms min
80 ms min
Time-Out of
XTAL Clock
256 TpC
512 TpC
1024 TpC
4096 TpC
Notes:
TpC = XTAL clock cycle.
The default on reset is 10 ms.
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