HD6432345 Datasheet, PDF (50/907 Pages) Hitachi Semiconductor – H8S/2345 F-ZTAT Hardware Manual

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
Legend
SP:
PC:
EXR:
T:
Stack pointer
Program counter
Extended control register
Trace bit
H:
Half-carry flag
U:
User bit
N:
Negative flag
Z:
Zero flag
I2 to I0: Interrupt mask bits
CCR: Condition-code register
V:
Overflow flag
C:
Carry flag
I:
Interrupt mask bit
UI:
User bit or interrupt mask bit*
Note: * In the H8S/2345 Series, this bit cannot be used as an interrupt mask.
Figure 2.7 CPU Registers
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