upd75112 Renesas Electronics Corporation., upd75112 Datasheet - Page 23

• Manufacturer Part Number: upd75112
• Description: 4-bit Single Chip-microcomputer
• Manufacturer: Renesas Electronics Corporation.

5.8 Bit Sequential Buffer ... 16 bit
The bit sequential buffer is a special data memory for
bit control. Since this buffer can easily operate bits by
sequentially changing address and bit specifications, it
can be conveniently be used for bit-wise processing of
data having long bit lengths.
Figure 5-7 Bit Sequential Buffer Format
5.9 Power-On Flag (Mask Option)
The power-on flag (PONF) is only set (1) when the
power-on reset circuit is activated and the power-on
reset signal is generated (see Figure 8-1).
PONF is mapped on bit 0 at address FD1H of the data
memory space and is manipulated by a bit manipula-
tion instruction.
However, it cannot be set (1) by the SET1 instruction.
Remarks: In pmen. @L addressing, the specified bit moves in
L Register
Address
Symbol
accordance with the L register.
Bit
L = F
3
2
FC3H
BSB3
1
L = C L = B
0
3
INCS L
2
FC2H
BSB2
1
L = 8 L = 7
0
3
2
FC1H
DECS L
BSB1
1
L = 4 L = 3
0
3
2
FC0H
BSB0
PD75112, 75116
1
L = 0
0
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