T89C51RD2-RDTIM datasheet(62/104 Pages) ATMEL

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T89C51RD2-RDTIM 数据表(PDF) 62 Page - ATMEL Corporation

部件名	T89C51RD2-RDTIM

功能描述	0 to 40 MHz Flash Programmable 8-bit Microcontroller

PDF	104 Pages

Scroll/Zoom	100%

制造商	ATMEL [ATMEL Corporation]

网页	http://www.atmel.com

标志

62 / 104 page

T89C51RD2

4243G–8051–05/03

Boot Process

Figure 24. Bootloader Process

RESET

Hardware

Condition?

BLJB = 1

BSB = 00h

SBV = FCh

Yes (PSEN = 0, EA = 1,

JUMP to FC00h

User Boot Loader

User Application

Default Boot Loader

JUMP to FC03h

JUMP to XX00h

JUMP to 0000h

and ALE = 1 or not connected)

Yes

BSB=0

SBV=FCh

SBV=XXh

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