DS89C430 datasheet(20/46 Pages) DALLAS

부품명	DS89C430

상세설명	Ultra-High-Speed Flash Microcontrollers

PDF	46 Pages

Scroll/Zoom	100%

제조업체	DALLAS [Dallas Semiconductor]

홈페이지	https://www.maximintegrated.com/en.html

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DS89C430/DS89C450 Ultra-High-Speed Flash Microcontrollers

20 of 46

Figure 6. Memory Map (as shown for the DS89C430)

External

Data

Memory

8K x 8

Flash

Memory

(Program)

1K x 8

SRAM

Data OR

prog mem

addr from

400 - 7FF

128 Bytes

Indirect

Addressing

Bit Addressable

Bank 3

Bank 2

Bank 1

Bank 0

128 Bytes SFR

0000

1FFF

2000

3FFF

INTERNAL

MEMORY

03FF

0000

FFFF

4000

0000

03FF

External

Program

Memory

INTERNAL

REGISTERS

8K x 8

Flash

Memory

(Program)

Memory Configuration

As illustrated in Figure 6, the DS89C430 incorporates two 8kB flash areas for on-chip program memory and 1kB of

SRAM for on-chip data memory or a particular range (400–7FF) of “alternate” program memory space. The

DS89C450 incorporates two 32kB flash memories. The DS89C430 uses an address scheme that separates

program memory from data memory such that the 16-bit address bus can address each memory area up to

maximum of 64kB.

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