MITSUBISHI MICROCOMPUTERS
3822 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Function except a port function
Table 2 Pin description (2)
Pin
Name
Function
Input port P4
P40
•1-bit Input port.
•CMOS compatible input level.
•7-bit I/O port.
•φ clock output pin
•Interrupt input pins
P41/φ
I/O port P4
•CMOS compatible input level.
•CMOS 3-state output structure.
P42/INT0,
P43/INT1
P44/RXD,
P45/TXD,
P46/SCLK,
P47/SRDY
•Serial I/O function pins
•I/O direction register allows each pin to be individually
programmed as either input or output.
•Pull-up control is enabled.
•8-bit I/O port.
I/O port P5
•Interrupt input pins
P50/INT2,
P51/INT3
•CMOS compatible input level.
•CMOS 3-state output structure.
•Real time port function pins
•Timer X, Y function pins
P52/RTP0,
P53/RTP1
•I/O direction register allows each pin to be individually
programmed as either input or output.
P54/CNTR0,
P55/CNTR1
•Pull-up control is enabled.
P56/TOUT
P57/ADT
•Timer 2 output pins
•A-D trigger input pins
P60/AN0–
P67/AN7
I/O port P6
•8-bit I/O port.
•A-D conversion input pins
•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.
•2-bit I/O port.
P70/XCOUT,
P71/XCIN
I/O port P7
•Sub-clock generating circuit I/O pins.
•CMOS compatible input level.
•CMOS 3-state output structure.
(Connect a resonator. External clock
cannot be used.)
•I/O direction register allows each pin to be individually
programmed as either input or output.
•Pull-up control is enabled.
5
MITSUBISHI [ Mitsubishi Group ]
