upd17225 Renesas Electronics Corporation., upd17225 Datasheet - Page 16

• Manufacturer Part Number: upd17225
• Description: 4-bit Single-chip Microcontroller For Small General-purpose Infrared Remote Control Transmitter
• Manufacturer: Renesas Electronics Corporation.

Caution No data can be written to the addresses 70H to 73H of BANK1 (the value of P0A to P0D are read in
16
(5) General-purpose data memory
0
1
2
3
4
5
6
7
The general-purpose data memory area is an area of the data memory excluding the system register area,
and the port register area. This memory area has a total of 223 nibbles (111 nibbles in BANK0 and 112 nibbles
in BANK1).
PD17225 and 17226 are not provided with BANK1.
P0A P0B P0C P0D
0
0
this case).
1
1
2
2
Column address
Column address
3
3
4
4
Figure 2-4. Configuration of Data Memory
5
5
6
6
Data Sheet U12643EJ2V0DS00
7
7
BANK 1
BANK 0
System register (SYSREG)
System register (SYSREG)
8
8
9
9
A
A
B
B
PD17225, 17226, 17227, 17228
C
C
Data buffer (DBF)
D
D
E
E
P0E
F
F
Example
Address 1AH
in BANK 0