參數(shù)資料
型號: M38B5
廠商: Mitsubishi Electric Corporation
英文描述: Single Chip 8 Bits Microcomputer(8位單片機)
中文描述: 單芯片8位單片機(8位單片機)
文件頁數(shù): 13/69頁
文件大?。?/td> 1011K
代理商: M38B5
MITSUBISHI MICROCOMPUTERS
38B5 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
13
PRELIMINARY
Notice: This s not a final specification.
Some parametric imits are subject to change.
Fig. 9 Port Block Diagram (1)
(2) Ports P1, P3
(3) Port P2
0
(5) Port P4
3
(6) Port P4
4
(8) Port P4
7
(7) Ports P4
5
, P4
6
INT
2
interrupt
input
* High-breakdown-voltage P-channel transistor
Notes 1: The dimmer signal sets the Toff timing.
2: A pull-down resistor is not built in to ports P2 and P8.
V
EE
*
Timer 1 output bit
Timer 3 output bit
Direction register
Timer 1 output
Timer 3 output
Dimmer signal (Note 1)
*
read
Buzzer control signal
Buzzer signal output
Timer 6 output selection bit
Timer 6 output
INT
0
,
INT
1
,
INT
3
interrupt input
CNTR
1
input
Timer 4 external clock input
(1) Ports P0, P2
1
–P2
7
, P8
0
–P8
3
Data bus
Local data
bus
Port latch
Dimmer signal (Note 1)
*
FLD/Port
switch register
Direction register
read
V
EE
(Note 2)
V
EE
FLD/Port
switch register
Port latch
Direction register
Data bus
Local data
bus
(Note 2)
Data bus
Local data
bus
Port latch
Dimmer signal (Note 1)
(4) Ports P4
0
–P4
2
, P6
0
Port latch
Direction register
Data bus
Buzzer control signal
Buzzer signal output
Port latch
Direction register
Data bus
Port latch
Direction register
Data bus
Port latch
Data bus
Data bus
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