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14
3819 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Fig. UA-4 Port block diagram (3)
(10) Ports P5
1
, P5
2
, P5
5
, P5
6
, P6
5
, P6
6
(11) Ports P5
3
, P5
7
, P6
7
Direction
register
Port latch
Data bus
Serial I/O input
Direction
register
Port latch
Data bus
Direction
register
Port latch
Data bus
Direction
register
Port latch
Data bus
(9) Ports P5
0
, P5
4
, P6
4
(12) Port P7
A-D conversion input
Analog input pin selection bit
Serial I/O port selection bit
P-channel output disable signal
Output OFF control signal
A-D conversion input
Analog input pin selection bit
S
OUT
or S
CLK
(only P5
2
, P5
6
, P6
6
)
Serial clock input
S
RDY
output enable bit
Serial ready output
or S
CLK
CS input
A-D conversion input
Analog input pin selection bit
(only P6
7
)
A-D conversion input
Analog input pin selection bit