UPD17073 NEC, UPD17073 Datasheet - Page 29

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

Caution Address 40H of BANK1, bit 3 of address 50H, and address 73H are test mode areas. Do not write
0
1
2
3
4
5
6
7
“1” to these areas.
0
1
2
3
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
4
0
0
5
Port register
Port register
Column address
1
1
Figure 4-2. Configuration of Data Memory
6
Data memory
BANK0
7
2
2
BANK1
8
3
3
General register
9
4
4
Peripheral control register
System register
A
5
5
LCD segment register
Column address
B
6
6
BANK0
BANK1
C
7
7
System register (SYSREG)
System register (SYSREG)
8
8
D
9
9
E
A
A
F
B
B
C
C
Data buffer
D
D
E
E
F
F
PD17072,17073
Example
b
Address 2BH
of BANK0
3
b
Same system
register exists.
2
b
1
b
0
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