PD64A_15 Datasheet, PDF (9/66 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS FOR INFRARED REMOTE CONTROL TRANSMISSION

µPD64A, 65
1.2 Pin I/O Circuits
The I/O circuits of the µPD64A and 65 pins are shown in partially simplified forms below.
(1) KI/O0 to KI/O7
Data
Output
latch
Output
disable
VDD
P-ch
N-ch^Note
Input buffer
(4) S0
Input buffer
Standby
release
OFF mode
Pull-down flag
N-ch
Note The drive capability is held low.
(2) KI0 to KI3
Standby
release
Input buffer
N-ch
(5) S1/LED
REM
output latch
Output
disable
Standby
release
Pull-down flag
N-ch
Pull-down flag
VDD
P-ch
N-ch
Input buffer
N-ch
(3) REM
Data
Output
latch
Carrier
generator
VDD
P-ch
N-ch
(6) S2
Standby
release
STOP release
ON/OFF
Input buffer
N-ch
Data Sheet U14380EJ3V0DS00
7