UPD61P24CS NEC, UPD61P24CS Datasheet - Page 10

• Manufacturer Part Number: UPD61P24CS
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER FOR REMOTE CONTROL TRANSMISSION
• Manufacturer: NEC

11.3
11.4
10
This is the 4-bit pin for key input. All of these pins are pulled down to the V
When the pull-down resistor switch is turned on (set 1) by PLA data, pull-down resistor R is turned on.
K
K
I
I
Pin (P
Pull-Down Resistor Configuration
12
)
Pin
PLA K
resistor switch
I
pull-down
P
2
Figure 11-2. K
K
I3
Pull-down
resistor
V
SS
K
I2
I
Pin Organization
K
I1
V
DD
P-ch
N-ch
V
K
SS
I0
SS
level by PLA data.
Input signal
PD61P24