HD6432633 Datasheet, PDF (112/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

2.4 Register Configuration
2.4.1 Overview
The CPU has the internal registers shown in figure 2-7. There are two types of registers: general
registers and control registers.
General Registers (Rn) and Extended Registers (En)
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ER0
E0
ER1
E1
ER2
E2
ER3
E3
ER4
E4
ER5
E5
ER6
E6
ER7 (SP)
E7
07
07
0
R0H
R0L
R1H
R1L
R2H
R2L
R3H
R3L
R4H
R4L
R5H
R5L
R6H
R6L
R7H
R7L
Control Registers (CR)
23
0
PC
76543210
EXR T — — — — I2 I1 I0
76543210
CCR I UI H U N Z V C
63
MAC
31
Sign extension
MACL
41
32
MACH
0
Legend
SP: Stack pointer
PC: Program counter
EXR: Extended control register
T:
Trace bit
I2 to I0: Interrupt mask bits
CCR: Condition-code register
I:
Interrupt mask bit
UI:
User bit or interrupt mask bit*
H:
U:
N:
Z:
V:
C:
MAC:
Half-carry flag
User bit
Negative flag
Zero flag
Overflow flag
Carry flag
Multiply-accumulate register
Note: * Cannot be used as an interrupt mask bit in the H8S/2633 Series.
Figure 2-7 CPU Registers
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