UPD77018A NEC, UPD77018A Datasheet - Page 10

• Manufacturer Part Number: UPD77018A
• Description: 16 bits/ Fixed-point Digital Signal Processor
• Manufacturer: NEC

10
1. PIN FUNCTIONS
1.1 Pin Functions
V
GND
X1
X2
CLKOUT
RESET
INT4 - INT1
• Power supply
DD
• System control
• Interrupt
Symbol
Symbol
Symbol
11, 21, 31, 37, 43, 56, 69,
86, 97
10, 20, 30, 36, 42, 55, 68,
83, 96
85
84
87
1
2 - 5
Pin No.
Pin No.
Pin No.
I/O
I/O
I/O
O
–
–
_
I
I
I
+3V power supply
Ground
Clock input / crystal connection pin
• The clock signal is connected to X1, when using external
Crystal connection pin
• X2 should be left open when using external clock for
Internal system clock output
Internal system reset signal input
Maskable external interrupt input
• Falling edge detection
system clock.
clock for system clock.
Function
Function
Function
PD77018A, 77019