參數(shù)資料
型號(hào): μPD78070AY
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): 23/72頁
文件大小: 524K
代理商: ΜPD78070AY
μ
PD78070AY
23
Figure 5-5. Watch Timer Block Diagram
5.4
Clock Output Control Circuit
This circuit can output clocks of the following frequencies:
19.5 kHz/39.1 kHz/78.1 kHz/156 kHz/313 kHz/625 kHz/1.25 MHz/2.5 MHz/5.0 MHz (at main system clock
frequency of 5.0 MHz)
32.768 kHz (at subsystem clock frequency of 32.768 kHz)
Figure 5-7. Clock Output Control Circuit Block Diagram
Figure 5-6. Watchdog Timer Block Diagram
2
4
f
XT
S
5-Bit Counter
S
Prescaler
S
INTWT
INTTM3
S
f
W
f
W
2
5
f
W
2
6
f
W
2
7
f
W
2
8
f
W
2
9
f
W
2
13
f
W
2
14
f
W
To 16-Bit Timer/
Event Counter
f
XX
/2
7
INTWDT
Maskable
Interrupt Request
RESET
INTWDT
Non-maskable
Interrupt Request
Prescaler
S
C
C
8-Bit Counter
2
4
f
XX
2
5
f
XX
2
6
f
XX
2
7
f
XX
2
8
f
XX
2
9
f
XX
2
11
f
XX
2
3
f
XX
PCL/P35
f
XX
/2
2
f
XX
/2
3
f
XX
/2
4
f
XX
/2
5
f
XX
/2
6
f
XX
/2
7
f
XT
Synchronization
Circuit
f
XX
/2
f
XX
S
Output Control
Circuit
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