TS87C52X2 ATMEL Corporation, TS87C52X2 Datasheet - Page 33

• Manufacturer Part Number: TS87C52X2
• Description: 8-bit Microcontroller 8 Kbytes Otp
• Manufacturer: ATMEL Corporation

EPROM Programming
Set-up modes
Definition of terms
4184E–8051–09/02
In order to program and verify the EPROM or to read the signature bytes, the
TS87C52X2 is placed in specific set-up modes (See Figure 11.).
Control and program signals must be held at the levels indicated in Table 35.
Address Lines: P1.0-P1.7, P2.0-P2.4 respectively for A0-A12
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 20. EPROM Set-up Modes
Mode
Program Code data
Verify Code data
Program Encryption
Array Address 0-3Fh
Read Signature Bytes
Program Lock bit 1
Program Lock bit 2
Program Lock bit 3
RST
1
1
1
1
1
1
1
PSEN
0
0
0
0
0
0
0
PROG
ALE/
1
1
12.75V
12.75V
12.75V
12.75V
12.75V
VPP
EA/
1
1
P2.6
0
0
0
0
1
1
1
P2.7
1
1
1
1
0
TS8xCx2X2
P3.3
1
0
1
0
1
1
1
P3.6
1
1
0
0
1
0
1
P3.7
1
1
1
0
1
0
0
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