MITSUBISHI MICROCOMPUTERS
3822 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Table 2 Pin description (2)
Pin
P4
0
P4
1
/φ
P4
2
/INT
0
,
P4
3
/INT
1
P4
4
/R
X
D,
P4
5
/T
X
D,
P4
6
/S
CLK
,
P4
7
/S
RDY
P5
0
/INT
2
,
P5
1
/INT
3
P5
2
/RTP
0
,
P5
3
/RTP
1
P5
4
/CNTR
0
,
P5
5
/CNTR
1
P5
6
/T
OUT
P5
7
/ADT
P6
0
/AN
0
–
P6
7
/AN
7
I/O port P6
•8-bit I/O port.
•CMOS compatible input level.
•CMOS 3-state output structure.
•I/O direction register allows each pin to be individually
programmed as either input or output.
•Pull-up control is enabled.
P7
0
/X
COUT,
P7
1
/X
CIN
I/O port P7
•2-bit I/O port.
•CMOS compatible input level.
•CMOS 3-state output structure.
•I/O direction register allows each pin to be individually
programmed as either input or output.
•Pull-up control is enabled.
•Sub-clock generating circuit I/O pins.
(Connect a resonator. External clock
cannot be used.)
Name
Input port P4
I/O port P4
Function
•1-bit Input port.
•CMOS compatible input level.
•7-bit I/O port.
•CMOS compatible input level.
•CMOS 3-state output structure.
•I/O direction register allows each pin to be individually
programmed as either input or output.
•Pull-up control is enabled.
I/O port P5
•8-bit I/O port.
•CMOS compatible input level.
•CMOS 3-state output structure.
•I/O direction register allows each pin to be individually
programmed as either input or output.
•Pull-up control is enabled.
•Interrupt input pins
•Real time port function pins
•Timer X, Y function pins
•Timer 2 output pins
•A-D trigger input pins
•A-D conversion input pins
•φ clock output pin
•Interrupt input pins
•Serial I/O function pins
Function except a port function
5
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