AT89C51AC3-RDTUM datasheet(38/143 Pages) ATMEL

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AT89C51AC3-RDTUM 数据表(PDF) 38 Page - ATMEL Corporation

部件名	AT89C51AC3-RDTUM

功能描述	Enhanced 8-bit Microcontroller with 64KB Flash Memory

PDF	143 Pages

Scroll/Zoom	100%

制造商	ATMEL [ATMEL Corporation]

网页	http://www.atmel.com

标志

38 / 143 page

AT89C51AC3

4383B–8051–01/05

Program/Code

Memory

The AT89C51AC3 implement 64K Bytes of on-chip program/code memory. Figure 20

shows the partitioning of internal and external program/code memory spaces depending

on the product.

The Flash memory increases EPROM and ROM functionality by in-circuit electrical era-

sure and programming. Thanks to the internal charge pump, the high voltage needed for

programming or erasing Flash cells is generated on-chip using the standard VDD volt-

age. Thus, the Flash Memory can be programmed using only one voltage and allows In-

System Programming commonly known as ISP. Hardware programming mode is also

available using specific programming tool.

Figure 20. Program/Code Memory Organization

0000h

64K Bytes

FFFFh

internal

0000h

FFFFh

Flash

64K Bytes

external

memory

EA = 0

EA = 1

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