UPD784020 Datasheet, PDF (14/90 Pages) NEC – 16/8-BIT SINGLE-CHIP MICROCOMPUTER

mPD784020, 784021
6.2 NON-PORT PINS (2/2)
Pin
RESET
X1
X2
ANI0-ANI7
ANO0, ANO1
AVREF1
AVREF2, AVREF3
AVDD
AVSS
VDD
VSS
TEST
I/O
Input
Input
—
Input
Output
—
Dual-function
—
—
P70-P77
—
—
Function
Chip reset
Crystal input for system clock oscillation (A clock pulse can also be
input to the X1 pin.)
Analog voltage inputs for the A/D converter
Analog voltage inputs for the D/A converter
Application of A/D converter reference voltage
Application of D/A converter reference voltage
Positive power supply for the A/D converter
Ground for the A/D converter
Positive power supply
Ground
Directly connect to VSS. (The TEST pin is for the IC test.)
14