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UPD77019 Datasheet(PDF) 12 Page - NEC

Part # UPD77019
Description  16 bits, Fixed-point Digital Signal Processor
PDF  56 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD77019 Datasheet(HTML) 12 Page - NEC

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µPD77018A, 77019
12
• Serial interface
Symbol
Pin No.
I/O
Function
SCK1
50
I
Clock input for serial 1
SORQ1
53
O
Serial output 1 request
SOEN1
54
I
Serial output 1 enable
SO1
52
O (3S)
Serial data output 1
SIEN1
49
I
Serial input 1 enable
SI1
48
I
Serial data input 1
SCK2
59
I
Clock input for serial 2
SOEN2
57
I
Serial output 2 enable
SO2
58
O (3S)
Serial data output 2
SIEN2
60
I
Serial input 2 enable
SI2
61
I
Serial data input 2
SIAK1
51
O
Serial input 1 acknowledge
Remark
The state of the pins added 3S becomes high impedance, when data output have been finished or RESET is input.



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