3069RF-ZTAT Datasheet, PDF (43/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

2.4 Register Configuration
2.4.1 Overview
The H8/300H CPU has the internal registers shown in figure 2.3. There are two types of registers:
general registers and control registers.
General Registers (ERn)
15
ER0
E0
ER1
E1
ER2
E2
ER3
E3
ER4
E4
ER5
E5
ER6
E6
ER7
E7
07
07
0
R0H
R0L
R1H
R1L
R2H
R2L
R3H
R3L
R4H
R4L
R5H
R5L
R6H
R6L
(SP) _R7H
R7L
Control Registers (CR)
23
PC
[Legend]
SP: Stack pointer
PC: Program counter
CCR: Condition code register
I: Interrupt mask bit
UI: User bit or interrupt mask bit
H: Half-carry flag
U: User bit
N: Negative flag
Z: Zero flag
V: Overflow flag
C: Carry flag
0
76543210
CCR I UI H U N Z V C
Figure 2.3 CPU Registers
Rev. 5.0, 09/04, page 21 of 978