UPD17232 datasheet(20/92 Pages) NEC

Part #	UPD17232

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

PDF	92 Pages

Scroll/Zoom	100%

Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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20 / 92 page

Data Sheet U14360EJ1V0DS00

µPD17230, 17231, 17232, 17233, 17234, 17235, 17236

(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 areayÏ This memory area has a total of 223 nibbles (111 nibbles in BANK0 and 112 nibbles

in BANK1).

Figure 2-6.

Configuration of Data Memory

0123456789

BANK 0

0123456789

BANK 1

System register (SYSREG)

Example

Address 1AH

in BANK 0

System register (SYSREG)

Column address

Data buffer (DBF)

P0A P0B P0C P0D

P0E

Column address

7 P1A

Note 2

Note 1

Notes 1. Address 6FH of bank 1 can be used as a general-purpose data memory area.

2. Only bit 0 of address 70H of bank 1 is used. Bits 1 through 3 are fixed to 0.

Caution No data can be written to or read from the addresses 71H to 73H of BANK1.

UPD17232 Datasheet(PDF) 20 Page - NEC