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UPD17217GT Datasheet(PDF) 15 Page - NEC

Part # UPD17217GT
Description  4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER
PDF  84 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD17217GT Datasheet(HTML) 15 Page - NEC

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µPD17215, 17216, 17217, 17218
15
(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).
µPD17215 and 17216 are not provided with BANK1.
Fig. 2-4
Configuration of Data Memory
0123456789
A
B
C
D
E
F
0
1
2
3
4
5
6
7
BANK 0
0123456789
A
B
C
D
E
F
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
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).



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