HD6433682 ETC, HD6433682 Datasheet - Page 63

• Manufacturer Part Number: HD6433682
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series
• Manufacturer: ETC

2.5
The following describes the H8/300H CPU. In this LSI, the upper eight bits are ignored in the
generated 24-bit address, so the effective address is 16 bits.
2.5.1
The H8/300H CPU supports the eight addressing modes listed in table 2.10. Each instruction uses
a subset of these addressing modes. Addressing modes that can be used differ depending on the
instruction. For details, refer to appendix A.4, Combinations of Instructions and Addressing
Modes.
Arithmetic and logic instructions can use the register direct and immediate modes. Data transfer
instructions can use all addressing modes except program-counter relative and memory indirect.
Bit-manipulation instructions use register direct, register indirect, or the absolute addressing mode
(@aa:8) to specify an operand, and register direct (BSET, BCLR, BNOT, and BTST instructions)
or immediate (3-bit) addressing mode to specify a bit number in the operand.
Table 2.10 Addressing Modes
No.
1
2
3
4
5
6
7
8
Register Direct Rn
The register field of the instruction specifies an 8-, 16-, or 32-bit general register containing the
operand. R0H to R7H and R0L to R7L can be specified as 8-bit registers. R0 to R7 and E0 to E7
can be specified as 16-bit registers. ER0 to ER7 can be specified as 32-bit registers.
Register Indirect @ERn
The register field of the instruction code specifies an address register (ERn), the lower 24 bits of
which contain the address of the operand on memory.
Addressing Modes and Effective Address Calculation
Addressing Modes
Addressing Mode
Register direct
Register indirect
Register indirect with displacement
Register indirect with post-increment
Register indirect with pre-decrement
Absolute address
Immediate
Program-counter relative
Memory indirect
Symbol
Rn
@ERn
@(d:16,ERn)/@(d:24,ERn)
@ERn+
@–ERn
@aa:8/@aa:16/@aa:24
#xx:8/#xx:16/#xx:32
@(d:8,PC)/@(d:16,PC)
@@aa:8
Rev. 3.00, 05/03, page 33 of 472