UPD77018A 查看數據表（PDF） - NEC => Renesas Technology

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UPD77018A

16 bits, Fixed-point Digital Signal Processor

NEC => Renesas Technology 

1. PIN FUNCTIONS

1.1 Pin Functions

• Power supply

Symbol

Pin No.

11, 21, 31, 37, 43, 56, 69,

VDD

86, 97

GND

10, 20, 30, 36, 42, 55, 68,

83, 96

I/O

–

+3V power supply

–

Ground

µPD77018A, 77019

Function

• System control

Symbol

X1

85

Pin No.

X2

84

CLKOUT

87

RESET

1

I/O

Function

I

Clock input / crystal connection pin

• The clock signal is connected to X1, when using external

clock for system clock.

_

Crystal connection pin

• X2 should be left open when using external clock for

system clock.

O

Internal system clock output

I

Internal system reset signal input

• Interrupt

Symbol

INT4 - INT1

Pin No.

2-5

I/O

Function

I

Maskable external interrupt input

• Falling edge detection

10

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