HD64F2145 datasheet(74/829 Pages) RENESAS

74 / 829 page

Rev. 2.0, 08/02, page 34 of 788

2.4

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).

I2I1I0

EXR*

76543210

0 7

R0H

R1H

R2H

R3H

R4H

R5H

R6H

R7H

R0L

R1L

R2L

R3L

R4L

R5L

R6L

R7L

EXR

I2 to I0

CCR

: 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)

IUI H U N ZV C

CCR

76543210

General Registers (Rn) and Extended Registers (En)

Control Registers

Legend

----

Note: * Does not affect operation in this LSI.

Figure 2.6 CPU Internal Registers

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