4 register configuration, Figure 2.6 cpu internal registers – Renesas H8S/2111B User Manual

Page 55

Rev. 1.00, 05/04, page 21 of 544

2.4 Register

Configuration

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).

I2 I1 I0

EXR*

7 6 5 4 3 2 1 0

0 7

R0H

R1H

R2H

R3H

R4H

R5H

R6H

R7H

R0L

R1L

R2L

R3L

R4L

R5L

R6L

R7L

SP:
PC:
EXR:
T:
I2 to I0:
CCR:
I:
UI:

Stack pointer
Program counter
Extended control register
Trace bit
Interrupt mask bits
Condition-code register
Interrupt mask bit
User bit or interrupt mask bit

Half-carry flag
User bit
Negative flag
Zero flag
Overflow flag
Carry flag

ER0

ER1

ER2

ER3

ER4

ER5

ER6

ER7 (SP)

I UI H U N Z V C

CCR

7 6 5 4 3 2 1 0

H:
U:
N:
Z:
V:
C:

General Registers (Rn) and Extended Registers (En)

Control Registers

[Legend]

- - - -

Note: * Does not affect operation in this LSI.

Figure 2.6 CPU Internal Registers

This manual is related to the following products:

HD64F2111B