參數(shù)資料
型號: UPD784218GC
廠商: NEC Corp.
英文描述: Connector assemblies, Network cables;
中文描述: 16-/8-bit的單晶片微控制器
文件頁數(shù): 45/92頁
文件大?。?/td> 617K
代理商: UPD784218GC
μ
PD784218, 784218Y
Data Sheet U12304EJ2V0DS00
45
Figure 8-16. Watch Timer Block Diagram
f
XX
/2
7
Prescaler
f
XT
f
W
2
4
f
W
2
5
f
W
2
6
f
W
2
7
f
W
2
8
f
W
f
W
2
9
5-bit counter
f
W
2
5
f
W
2
14
INTWT
INTTM3
To 16-bit timer/
event counter
S
S
S
S
8.12 Watchdog Timer
A watchdog timer is provided to detect a CPU runaway. This watchdog timer generates a non-maskable or
maskable interrupt unless it is cleared by software within a specified interval time. Once enabled to operate, the
watchdog timer cannot be stopped by software. Whether the interrupt by the watchdog timer or the interrupt input
from the NMI pin takes precedence can be specified.
Figure 8-17. Watchdog Timer Block Diagram
f
CLK
/2
21
f
CLK
/2
20
f
CLK
/2
19
f
CLK
/2
17
f
CLK
Clear signal
Timer
INTWDT
S
Remark
f
CLK
: Internal system clock (f
XX
to f
XX
/8)
相關(guān)PDF資料
PDF描述
UPD784218GF 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784218Y 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784218 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784218GC-XXX-8EU 16-Bit Microcontroller
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