Register Configuration; Figure 2.6 Cpu Internal Registers - Renesas H8S/2368 Series Hardware Manual

2.4

Register Configuration

The H8S/2000 CPU has the internal registers shown in figure 2.6. There are two types of registers:
general registers and control registers. Control registers are a 24-bit program counter (PC), an 8-bit
extended control register (EXR), and an 8-bit condition code register (CCR).
General Registers (Rn) and Extended Registers (En)
15
ER0
ER1
ER2
ER3
ER4
ER5
ER6
ER7 (SP)
Control Registers
Legend
SP
PC
EXR
T
I2 to I0
CCR
I
UI
Note: * For this LSI, the interrupt mask bit is not available.
E0
E1
E2
E3
E4
E5
E6
E7
23
:Stack pointer
:Program counter
:Extended control register
:Trace bit
:Interrupt mask bits
:Condition-code register
:Interrupt mask bit
:User bit or interrupt mask bit*

Figure 2.6 CPU Internal Registers

0 7 0 7
R0H
R1H
R2H
R3H
R4H
R5H
R6H
R7H
PC
7 6 5 4 3 2 1 0
T
EXR
7 6 5 4 3 2 1 0
CCR
I UI H U N Z V C
H :Half-carry flag
U :User bit
N :Negative flag
Z :Zero flag
V :Overflow flag
C :Carry flag
Rev. 2.00, 05/03, page 29 of 820
0
R0L
R1L
R2L
R3L
R4L
R5L
R6L
R7L
0
- - - -
I2 I1 I0