HD6432126R datasheet(52/843 Pages) RENESAS

Part #	HD6432126R

Description	Single-Chip Microcomputer

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Manufacturer	RENESAS [Renesas Technology Corp]

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• High-speed operation

 All frequently-used instructions execute in one or two states

 Maximum clock rate:

20 MHz

 8/16/32-bit register-register add/subtract: 50 ns

 8 × 8-bit register-register multiply:

600 ns

 16 ÷ 8-bit register-register divide:

600 ns

 16 × 16-bit register-register multiply:

1000 ns

 32 ÷ 16-bit register-register divide:

1000 ns

• Two CPU operating modes

 Normal mode

 Advanced mode

• Power-down state

 Transition to power-down state by SLEEP instruction

 CPU clock speed selection

2.1.2

Differences between H8S/2600 CPU and H8S/2000 CPU

The differences between the H8S/2600 CPU and the H8S/2000 CPU are shown below.

• Register configuration

The MAC register is supported only by the H8S/2600 CPU.

• Basic instructions

The four instructions MAC, CLRMAC, LDMAC, and STMAC are supported only by the

H8S/2600 CPU.

• Number of execution states

The number of execution states of the MULXU and MULXS instructions differ as follows.

Number of Execution States

Instruction

Mnemonic

H8S/2600

H8S/2000

MULXU

MULXU.B Rs, Rd

3

12

MULXU.W Rs, ERd

4

20

MULXS

MULXS.B Rs, Rd

4

13

MULXS.W Rs, ERd

5

21

There are also differences in the address space, EXR register functions, power-down state, etc.,

depending on the product.

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