p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 63

• Manufacturer Part Number: p2125vps20
• Description: 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. These are classified into two
types of registers: general registers and control registers. Control registers refer to 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
[Legend]
SP:
PC:
EXR:
T:
I2 to I0:
CCR:
I:
UI:
Note: * Does not affect operation in this LSI.
Register Configuration
ER0
ER1
ER2
ER3
ER4
ER5
ER6
ER7 (SP)
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
0 7
H:
U:
N:
Z:
V:
C:
Half-carry flag
User bit
Negative flag
Zero flag
Overflow flag
Carry flag
R0H
R1H
R2H
R3H
R4H
R5H
R6H
R7H
PC
Rev. 1.00 Sep. 21, 2006 Page 25 of 658
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
REJ09B0310-0100
I2 I1 I0
Section 2 CPU
0
0