UPD65 NEC [NEC], UPD65 Datasheet - Page 7

• Manufacturer Part Number: UPD65
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION
• Manufacturer: NEC [NEC]

disable
1.2 INPUT/OUTPUT Circuits of Pins
output
data
pull-down flag
standby
The input/output circuits of the PD64A and 65 pins are shown in partially simplified forms below.
(1) K
Note The drive capability is held low.
(2) K
(3) REM
release
data
I/O0
I0
-K
Output
latch
-K
Carrier
generator
Output
latch
I3
I/O7
Input buffer
Input buffer
V
N-ch
DD
V
N-ch
P-ch
DD
P-ch
N-ch
Note
Data Sheet U14380EJ2V0DS00
N-ch
REM
output latch
standby
(4) S
release
(5) S
(6) S
standby
release
disable
output
STOP release
ON/OFF
standby
release
1
0
2
/LED
pull-down flag
pull-down flag
OFF mode
Input buffer
Input buffer
Input buffer
PD64A, 65
N-ch
V
DD
P-ch
N-ch
N-ch
N-ch
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