TS87C54X2 Temic Semiconductors, TS87C54X2 Datasheet - Page 37

• Manufacturer Part Number: TS87C54X2
• Description: 8-bit CMOS Microcontroller 0-60 MHz
• Manufacturer: Temic Semiconductors

8.2.3 Signature bytes
The TS87C54/58X2 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 TS87C54/58X2 is placed in specific
set-up modes (See Figure 11.).
Control and program signals must be held at the levels indicated in Table 22.
8.3.2 Definition of terms
Address Lines:P1.0-P1.7, P2.0-P2.5, P3.4 respectively for A0-A14 (P2.5 (A13) for TS87C54X2, P3.4 (A14) for
TS87C58X2).
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.
Rev. B - Aug. 31, 1999
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
Table 22. EPROM Set-Up Modes
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
TS80C54X2/C58X2
TS87C54X2/C58X2
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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