TS80C51RA2 Atmel Corporation, TS80C51RA2 Datasheet - Page 52

• Manufacturer Part Number: TS80C51RA2
• Description: High Performance 8-bit Microcontroller
• Manufacturer: Atmel Corporation

EPROM Programming
52
Set-up Modes
Definition of Terms
TS8xC51Rx2
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.
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
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
Mode
RST
1
1
1
1
1
1
1
PSEN
0
0
0
0
0
0
0
ALE/P
ROG
1
1
EA/VP
12.75
12.75
12.75
12.75
12.75
P
V
1
V
1
V
V
V
P2.6
0
0
0
0
1
1
1
P2.7
1
1
1
1
0
P3.3
1
0
1
0
1
1
1
4188A–8051–10/02
P3.6
1
1
0
0
1
0
1
P3.7
1
1
1
0
1
0
0