參數(shù)資料
型號: UPD754202
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 4位單晶片微控制器
文件頁數(shù): 24/66頁
文件大小: 302K
代理商: UPD754202
24
μ
PD754202, 754202(A)
6.5 Bit Sequential Buffer ....... 16 Bits
The bit sequential buffer (BSB) is a special data memory for bit manipulation and the bit manipulation can be
easily performed by changing the address specification and bit specification in sequence, therefore it is useful
when processing large data bit-wise.
Figure 6-6. Bit Sequential Buffer Format
Remarks 1.
In the pmem.@L addressing, the specified bit moves corresponding to the L register.
In the pmem.@L addressing, the BSB can be manipulated regardless of MBE/MBS specification.
2.
Address
Bit
Symbol
L register
L = FH
L = CH L = BH
L = 8H L = 7H
L = 4H L = 3H
L = 0H
DECS L
INCS L
BSB3
BSB2
BSB1
BSB0
3
2
1
0
3
2
1
0
3
2
1
0
3
2
1
0
FC3H
FC2H
FC1H
FC0H
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