UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 105
UPD784026
Manufacturer Part Number
UPD784026
Description
16/8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD784026.pdf
(759 pages)
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DE, HL, VVP, UUP, TDE, WHL), each register can also be written by its absolute name (R0 to R15, RP0 to RP7, RG4 to RG7).
The correspondence between these names is shown in Table 3-4.
(a) 8-bit registers
In addition to the function name that emphasizes the specific function of the register (X, A, C, B, E, D, L, H, AX, BC, VP, UP,
Absolute Name
* RSS should only be set to 1 when a 78K/III series program is used.
Remark R8 to R11 have no function name.
R0
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
Table 3-4 Correspondence between Function Names and Absolute Names
RSS = 0
X
A
C
B
E
D
L
H
Function Name
CHAPTER 3 CPU ARCHITECTURE
RSS = 1*
X
A
C
B
E
D
L
H
(b) 16-bit registers
(c) 24-bit registers
Absolute Name
Absolute Name
RG4
RG5
RG6
RG7
RP0
RP1
RP2
RP3
RP4
RP5
RP6
RP7
RSS = 0
BC
UP
DE
AX
VP
HL
Function Name
Function Name
WHL
VVP
UUP
TDE
RSS = 1*
BC
UP
DE
AX
VP
HL
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