h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 61

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

2.4
The H8S/2600 CPU has the internal registers shown in figure 2.6. There are two types of registers;
general registers and control registers. The control registers are a 24-bit program counter (PC), an
8-bit extended control register (EXR), an 8-bit condition code register (CCR), and a 64-bit
multiply-accumulate register (MAC).
General Registers (Rn) and Extended Registers (En)
Control Registers (CR)
[Legend]
SP:
PC:
EXR:
T:
I2 to I0:
CCR:
I:
UI:
Registers
ER0
ER1
ER2
ER3
ER4
ER5
ER6
ER7 (SP)
MAC
Stack pointer
Program counter
Extended control register
Trace bit
Interrupt mask bits
Condition-code register
Interrupt mask bit
User bit or interrupt mask bit
63
31
15
Figure 2.6 CPU Registers
E0
E1
E2
E3
E4
E5
E6
E7
23
Sign extension
MACL
0 7
H:
U:
N:
Z:
V:
C:
MAC:
R0H
R1H
R2H
R3H
R4H
R5H
R6H
R7H
Half-carry flag
User bit
Negative flag
Zero flag
Overflow flag
Carry flag
Multiply-accumulate register
PC
Rev. 2.00 Dec. 05, 2005 Page 23 of 724
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
41
- - - -
MACH
R0L
R1L
R2L
R3L
R4L
R5L
R6L
R7L
REJ09B0200-0200
I2 I1 I0
Section 2 CPU
32
0
0
0