参数资料
型号: TS87C51RD2-VCM
厂商: ATMEL CORP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 40 MHz, MICROCONTROLLER, PDIP40
封装: PLASTIC, DIP-40
文件页数: 47/72页
文件大小: 698K
代理商: TS87C51RD2-VCM
Rev. B - Aug. 24, 1999
51
TS80C51RA2/RD2
TS83C51RB2/RC2/RD2
TS87C51RB2/RC2/RD2
8.2.3 Signature bytes
The TS87C51RB2/RC2/RD2 contains 4 factory programmed signatures bytes. To read these bytes, perform the
process described in section 8.3.
8.3 EPROM Programming
8.3.1 Set-up modes
In order to program and verify the EPROM or to read the signature bytes, the TS87C51RB2/RC2/RD2 is placed
in specific set-up modes (See Figure 18.).
Control and program signals must be held at the levels indicated in Table 32.
8.3.2 Definition of terms
Address Lines:P1.0-P1.7, P2.0-P2.5, P3.4, P3.5 respectively for A0-A15 (P2.5 (A13) for RB, P3.4 (A14) for RC,
P3.5 (A15) for RD)
Data Lines:P0.0-P0.7 for D0-D7
Control Signals:RST, PSEN, P2.6, P2.7, P3.3, P3.6, P3.7.
Program Signals:ALE/PROG, EA/VPP.
Table 32. EPROM Set-Up Modes
Mode
RST
PSEN
ALE/
PROG
EA/
VPP
P2.6
P2.7
P3.3
P3.6
P3.7
Program Code data
1
0
12.75V
0
1
Verify Code data
1
0
1
0
1
Program Encryption Array
Address 0-3Fh
1
0
12.75V
0
1
0
1
Read Signature Bytes
1
0
1
0
Program Lock bit 1
1
0
12.75V
1
Program Lock bit 2
1
0
12.75V
1
0
Program Lock bit 3
1
0
12.75V
1
0
1
0
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