參數(shù)資料
型號: UPD750006
廠商: NEC Corp.
英文描述: 4 BIT SINGLE-CHIP MICROCONTROLLER
中文描述: 4位單片機
文件頁數(shù): 32/84頁
文件大小: 719K
代理商: UPD750006
32
μ
PD750004, 750006, 750008, 750004(A), 750006(A), 750008(A)
6.9 BIT SEQUENTIAL BUFFER: 16 BITS
The bit sequential buffer (BSB) 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.
Fig. 6-9 Bit Sequential Buffer Format
Remarks 1.
In pmem.@L addressing, bit specification is shifted according to the L register.
2.
In pmem.@L addressing, the bit sequential buffer can be manipulated at any time regardless of MBE/
MBS specification.
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 = FH
L = CH L = BH
L = 8H L = 7H
L = 4H L = 3H
L = 0H
DECS L
INCS L
Address
Bit
L register
Symbol
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