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T89C51RD2-RDTIM 数据表(PDF) 79 Page - ATMEL Corporation

部件名 T89C51RD2-RDTIM
功能描述  0 to 40 MHz Flash Programmable 8-bit Microcontroller
PDF  104 Pages
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制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

T89C51RD2-RDTIM 数据表(HTML) 79 Page - ATMEL Corporation

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T89C51RD2
4243G–8051–05/03
Figure 32. Programming and Verification Signal’s Waveform
Extra Memory Mapping
The memory mapping the T89C51RD2 software registers in the Extra Flash memory is
described in the table below.
All other addresses are reserved
Control signals
Data In
ALE/PROG
A0-A15
Programming Cycle
D0-D7
EA
Data Out
Read/Verify Cycle
5V
0V
P2.7
48 clk (load latch ) or 10 ms (write) or 100 ms (erase)
Table 42. Extra Row Memory Mapping (XAF)
Address
Default content
Copy of device ID #3
0061h
FFh
Copy of device ID #2
0060h
FCh
Copy of device ID #1
0031h
D7h
Copy of Manufacturer Code:
ATMEL
0030h
58h
Software Security Byte (level 1 by
default)
0005h
FFh
Copy of HSB (level 4 by default
and BLJB = 0)
0004h
18h or 1Bh
Software Boot Vector
0001h
FCh
Boot Status Byte
0000h
FFh



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