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UPD17015GS Datasheet(PDF) 21 Page - NEC

Part # UPD17015GS
Description  4-BIT SINGLE-CHIP MICROCONTROLLER FOR PORTABLE RADIOS
PDF  120 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD17015GS Datasheet(HTML) 21 Page - NEC

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µPD17015
Table 4-1 List of Data Memory Manipulation Instructions
4.3
DATA MEMORY ADDRESSING
Fig. 4-3 shows how a data memory address is specified.
A data memory address is specified with a bank, row address, and column address.
A row address and column address are directly specified with a data memory manipulation instruction.
Fig. 4-3 Data Memory Addressing
b
2
Row
address
Column address
b
1
b
0
b
3
b
2
b
1
b
0
Instruction operand
Data memory address
M
4.4
NOTES ON USING DATA MEMORY
Upon power-on reset, the contents of the general-purpose data memory are undefined.
Initialize the general-purpose data memory as required.
Function
Instruction
Operation
Addition
ADD
ADDC
Subtraction
SUB
SUBC
Logical
AND
OR
XOR
Comparison
SKE
SKGE
SKLT
SKNE
Transfer
MOV
LD
ST
Decision
SKT
SKF



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