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UPD65 Datasheet(PDF) 30 Page - NEC

Part # UPD65
Description  4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION
PDF  64 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD65 Datasheet(HTML) 30 Page - NEC

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30
µPD64A, 65
Data Sheet U14380EJ2V0DS00
9. INSTRUCTION SET
9.1 Machine Language Output by Assembler
The bit length of the machine language of this product is 10 bits per word. However, the machine language that
is output by the assembler is extended to 16 bits per word. As shown in the example below, the expansion is made
by inserting 3-bit extended bits (111) in two locations.
Figure 9-1. Example of Assembler Output (10 bits extended to 16 bits)
<1> In the case of “ANL A, @R0H”
1
1
1010
1
0000
1010
1
0000
111
111
Extended bits
Extended bits
= FAF0
<2> In the case of “OUT P0, #data8”
0
0
0110
1
1000
0110
1
1000
111
111
Extended bits
Extended bits
= E6F8



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