參數(shù)資料
型號: UPD75068A
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCOMPUTER
中文描述: 4位單片機(jī)
文件頁數(shù): 26/68頁
文件大小: 640K
代理商: UPD75068A
26
μ
PD75064, 75066, 75068, 75064(A), 75066(A), 75068(A)
5.9 Bit Sequential Buffer: 16 Bits
The bit sequential buffer is a data memory specifically provided for bit manipulation. With this buffer,
addresses and bit specifications can be sequentially updated by bit manipulation operation. Therefore, this
buffer is very useful for processing long data in bit units.
Figure 5-8. Bit Sequential Buffer Format
3
2
1
0
3
2
1
0
3
2
1
0
3
2
1
0
BSB3
BSB2
BSB1
BSB0
FC3H
FC2H
FC1H
FC0H
L = F
L = C L = B
L = 8 L = 7
L = 4 L = 3
L = 0
DECS L
INCS L
Address
Bit
L register
Symbol
Remark
For "pmem.@L" addressing, the specification bit is shifted according to the L register.
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