參數(shù)資料
型號: UPD17242UC-XXX-5A4
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 4.5 MHz, MICROCONTROLLER, PDSO30
封裝: 0.300 INCH, PLASTIC, SSOP-30
文件頁數(shù): 19/102頁
文件大?。?/td> 953K
代理商: UPD17242UC-XXX-5A4
23
Data Sheet U15002EJ1V1DS
PD17240, 17241, 17242, 17243, 17244, 17245, 17246
(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 447 nibbles (111 nibbles in BANK0 and 336 nibbles
(112 nibbles
× 3) in BANK1 to BANK3).
Figure 2-6.
Configuration of Data Memory (1/2)
Notes 1. Address 6FH of BANK1 can be used as a general-purpose data memory area.
2. Bits 0 to 2 of address 70H of BANK1 are used. Bit 3 is fixed to 0.
3. Only bit 0 of address 71H of BANK1 is used. Bits 1 to 3 are fixed to 0.
Caution No data can be written to or read from addresses 72H and 73H of BANK1.
0
123456789
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)
Ro
w
address
Ro
w
address
Column address
Data buffer (DBF)
P0A P0B P0C P0D
P0E
Column address
0
1
2
3
4
5
6
7 P1A
Note 2
Note 1
P1B
Note 3
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