UPD17073 NEC, UPD17073 Datasheet - Page 30

• Manufacturer Part Number: UPD17073
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM
• Manufacturer: NEC

4.3 Addressing Data Memory
bank is specified by the contents of the bank register.
30
Figure 4-3 shows how to address the data memory.
An address of the data memory is specified by using a bank, row address, and column address.
The row address and column address are directly specified by a data memory manipulation instruction, but the
For details of the bank register, refer to 5. SYSTEM REGISTER (SYSREG).
Data memory address
Table 4-1. Data Memory Manipulation Instructions
Operation
Compare
Transfer
Judge
Figure 4-3. Addressing Data Memory
Function
M
Add
Subtract
Logical
b
3
Bank register
Bank
b
2
b
1
b
0
Instruction
Row address Column address
ADD
ADDC
SUB
SUBC
AND
OR
XOR
SKE
SKGE
SKLT
SKNE
MOV
LD
ST
SKT
SKF
b
2
Instruction operand
b
1
b
0
b
3
b
2
b
1
b
0
PD17072,17073