D12320VF25IV Datasheet, PDF (72/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 2 CPU
2.4 Register Configuration
2.4.1 Overview
The CPU has the internal registers shown in figure 2.4. There are two types of registers: general
registers and control registers.
General Registers (Rn) and Extended Registers (En)
15
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
Legend:
SP: Stack pointer
PC: Program counter
EXR: Extended control register
T:
Trace bit
I2 to I0: Interrupt mask bits
CCR: Condition-code register
I:
Interrupt mask bit
UI:
User bit or interrupt mask bit*
76543210
EXR T — — — — I2 I1 I0
76543210
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
Note: * In the H8S/2329 Group and H8S/2328 Group, this bit cannot be used as an interrupt
mask.
Figure 2.4 CPU Registers
Rev.6.00 Sep. 27, 2007 Page 40 of 1268
REJ09B0220-0600