h8s-2161b Renesas Electronics Corporation., h8s-2161b Datasheet - Page 87

• Manufacturer Part Number: h8s-2161b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

2.4
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)
Control Registers
Register Configuration
ER0
ER1
ER2
ER3
ER4
ER5
ER6
ER7 (SP)
Legend:
SP
PC
EXR
T
I2 to I0
CCR
I
UI
Note: * Does not affect operation in this LSI.
: Stack pointer
: Program counter
: Extended control register
: Trace bit
: Interrupt mask bits
: Condition-code register
: Interrupt mask bit
: User bit or interrupt mask bit
15
Figure 2.6 CPU Internal Registers
E0
E1
E2
E3
E4
E5
E6
E7
23
H
U
N
Z
V
C
0 7
: Half-carry flag
: User bit
: Negative flag
: Zero flag
: Overflow flag
: Carry flag
Rev. 3.00 Mar 21, 2006 page 33 of 788
R0H
R1H
R2H
R3H
R4H
R5H
R6H
R7H
PC
EXR *
CCR
0 7
T
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
I UI H U N Z V C
— — — —
R0L
R1L
R2L
R3L
R4L
R5L
R6L
R7L
REJ09B0300-0300
I2 I1 I0
Section 2 CPU
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