UPD75064GBA データシートの表示（PDF） - NEC => Renesas Technology

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UPD75064GBA

4-BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

µPD75064, 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

Address

FC3H

FC2H

FC1H

FC0H

Bit

3210321032103210

Symbol

BSB3

BSB2

BSB1

BSB0

L register L = F

L=C L=B

L=8 L=7

INCS L

L=4 L=3

DECS L

L=0

Remark For "pmem.@L" addressing, the specification bit is shifted according to the L register.

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