參數(shù)資料
型號(hào): UPD703204
廠商: NEC Corp.
英文描述: 32-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 32位單晶片微控制器
文件頁數(shù): 41/98頁
文件大?。?/td> 797K
代理商: UPD703204
Preliminary Product Information U15436EJ1V0PM
41
μ
PD703201, 703201Y, 703204, 703204Y, 70F3201, 70F3201Y, 70F3204, 70F3204Y
11. WATCHDOG TIMER FUNCTION
The watchdog timer has the following functions.
{
{
{
Watchdog timer
Interval timer
Timer for oscillation stabilization
The following figure shows the configuration of the watchdog timer function.
OSCMD
13-bit divider
RUN
OSTS0 to OSTS2,
WDCS0 to WDCS2
WDTM3, WDTM4
Clear
Clear
8-bit counter
Output
control
f
XW
f
XW
/2
13
f
XW
/2
12
f
XW
/2
11
f
XW
/2
10
f
XW
/2
9
f
XW
/2
8
f
XW
/2
7
f
XW
/2
6
f
XW
/2
5
OVF
INTWDTM
INTWDT
WDTRES
OSTOVF
S
Remarks 1.
WDTRES:
OSTOVF:
OSCMD:
f
XW
:
During counting of oscillation stabilization time: f
XW
= f
X
/2
Other than above:
Reset signal triggered by WDT overflow
Overflow signal for oscillation stabilization
Timer mode signal for oscillation stabilization
Watchdog timer clock frequency
2
.
f
XW
= f
XX
/2
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