參數(shù)資料
型號: μPD789012
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8位單片微控制器)
中文描述: 8位單片機(jī)微控制器(8位單片微控制器)
文件頁數(shù): 13/44頁
文件大?。?/td> 271K
代理商: ΜPD789012
μ
PD789011, 789012
13
5.3 Timer
The
μ
PD789011 and 789012 incorporate 3 channels of the timer.
8-bit timer/event counter : 2 channels
Watchdog timer
: 1 channel
Table 5-2. Operations of Timer
8-bit Timer/Event Counter
Watchdog Timer
Operation mode Interval timer
2 channels
1 channel
External event counter
2 channels
Function
Timer output
2 outputs
Interrupt request
2
1
Figure 5-2. 8-Bit Timer/Event Counter Block Diagram
Remark
n = 0 or 1
Figure 5-3. Watchdog Timer Block Diagram
Internal Bus
8-Bit Compare Register
(CRn0)
Match
S
INTTMn
TOn/P3n/INTPn/TIn
Clear
8-Bit Timer Register
(TMn)
Output
Control
Circuit
Internal Bus
f
X
f
X
/2
5
TIn/P3n/INTPn/TOn
Prescaler
f
X
2
6
f
X
2
8
f
X
2
10
S
7-Bit Counter
Control
CIrcuit
f
X
2
4
INTWDT
Maskable
Interrupt Request
INTWDT
Non-Maskable
Interrupt Request
RESET
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