UPD17225GT-XXX-E2 View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD17225GT-XXX-E2

4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER

NEC => Renesas Technology 

µPD17225, 17226, 17227, 17228

(5) General-purpose data memory

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).

µPD17225 and 17226 are not provided with BANK1.

Figure 2-4. Configuration of Data Memory

Column address

BANK 0

0 1 2 3 4 5 6 7 8 9 ABCDEF

0

Data buffer (DBF)

1

2

3

4

5

6

P0E

7 P0A P0B P0C P0D

System register (SYSREG)

Example

Address 1AH

in BANK 0

Column address

BANK 1

0 1 2 3 4 5 6 7 8 9 ABCDEF

System register (SYSREG)

Caution No data can be written to the addresses 70H to 73H of BANK1 (the value of P0A to P0D are read in

this case).

16

Data Sheet U12643EJ2V0DS00

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