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參數(shù)資料
| 型號： | UPD17230MC |
| 廠商： | NEC Corp. |
| 元件分類： | 4位微控制器 |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| 中文描述： | 4位單片機(jī)的小型通用紅外遙控器 |
| 文件頁數(shù)： | 20/92頁 |
| 文件大?。?/td> | 378K |
| 代理商： | UPD17230MC |
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Data Sheet U14360EJ1V0DS00
μ
PD17230, 17231, 17232, 17233, 17234, 17235, 17236
20
(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 areay 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
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
1
2
3
4
5
6
7
BANK 0
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
BANK 1
System register (SYSREG)
Example
Address 1AH
in BANK 0
System register (SYSREG)
R
R
Column address
Data buffer (DBF)
P0A P0B P0C P0D
P0E
Column address
0
1
2
3
4
5
6
7 P1A
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.
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| UPD17231 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
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