3822_03 Datasheet, PDF (30/328 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

(1)Ports P0, P1
VL2/VL3
VL1/VSS
Segment output enable bit
(Note)
Direction
register
Data bus
Port latch
Pull-down control
Segment output enable bit
Note : Bit 0 of direction register
(3)Ports P34–P37
VL2/VL3
VL1/VSS
Pull-down control
Segment output enable bit
(5)Port P41
Pull-up control
Data bus
Direction
register
Port latch
φ output control bit
φ
Fig. 11 Port block diagram (1)
MITSUBISHI MICROCOMPUTERS
3822 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
(2)Ports P2, P42, P43, P50, P51
Pull-up control
Data bus
Direction
register
Port latch
Key input (Key-on wake up) interrupt input
INT0–INT3 interrupt input
(4)Port P40
Data bus
(6)Port P44
Serial I/O enable bit
Reception enable bit
Direction
register
Data bus
Port latch
Pull-up control
Serial I/O input
1-15