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| 型號(hào)： | M34570M4-081FP |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| 中文描述： | 單芯片4位微機(jī)的CMOS |
| 文件頁(yè)數(shù)： | 33/68頁(yè) |
| 文件大?。?/td> | 319K |
| 代理商： | M34570M4-081FP |
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33
MITSUBISHI MICROCOMPUTERS
4570 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
Fig. 29 State transition
S
R
Q
Power down flag P
POF instruction
Reset input or voltage
drop detection circuit
output
G
Set source POF instruction is executed
G
Clear source Reset input
Software start
P = “1”
Yes
Warm start
Cold start
No
Fig. 30 Set source and clear source of the P flag
Fig. 31 Start condition identified example using the SNZP
instruction
Table 15 Key-on wakeup control register and pull-up control register
K0
3
K0
2
K0
1
K0
0
Port P4
3
key-on wakeup
control bit
Port P4
2
key-on wakeup
control bit
Port P4
1
key-on wakeup
control bit
Port P4
0
key-on wakeup
control bit
Key-on wakeup control register K0
0
1
0
1
0
1
0
1
Key-on wakeup not used
Key-on wakeup used
Key-on wakeup not used
Key-on wakeup used
Key-on wakeup not used
Key-on wakeup used
Key-on wakeup not used
Key-on wakeup used
at reset : 0000
2
at RAM back-up : state retained
R/W
Pull-up transistor OFF
Pull-up transistor ON
Pull-up transistor OFF
Pull-up transistor ON
Pull-up transistor OFF
Pull-up transistor ON
Pull-up transistor OFF
Pull-up transistor ON
Port P4
3
pull-up transistor
control bit
Port P4
2
pull-up transistor
control bit
Port P4
1
pull-up transistor
control bit
Port P4
0
and P0
1
pull-up transistor
control bit
Note: “R” represents read enabled, and “W” represents write enabled.
0
1
0
1
0
1
0
1
at reset : 0000
2
at RAM back-up : state retained
Pull-up control register PU0
R/W
PU0
3
PU0
2
PU0
1
PU0
0
: The time required to stabilize f(X
IN
) oscillation is automatically
generated by hardware.
Stabilizing time a
POF instruction
is executed
A
f(X
IN
) oscillation
Return input
(Stabilizing time a )
B
(RAM back-up
mode)
f(X
IN
) stop
Reset
(Stabilizing time a )
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