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UPD77018A Datasheet(PDF) 10 Page - NEC

Part # UPD77018A
Description  16 bits, Fixed-point Digital Signal Processor
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD77018A Datasheet(HTML) 10 Page - NEC

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µPD77018A, 77019
10
1.
PIN FUNCTIONS
1.1
Pin Functions
• Power supply
VDD
+3V power supply
GND
Ground
• System control
Symbol
Pin No.
I/O
Function
X1
85
I
Clock input / crystal connection pin
• The clock signal is connected to X1, when using external
clock for system clock.
X2
84
_
Crystal connection pin
• X2 should be left open when using external clock for
system clock.
CLKOUT
87
O
Internal system clock output
RESET
1
I
Internal system reset signal input
Symbol
Pin No.
I/O
Function
11, 21, 31, 37, 43, 56, 69,
86, 97
10, 20, 30, 36, 42, 55, 68,
83, 96
• Interrupt
Symbol
Pin No.
I/O
Function
INT4 - INT1
2 - 5
I
Maskable external interrupt input
• Falling edge detection


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