UPI-C42/UPI-L42
Table 3. Signature Mode Table
Address
Device
No. of
Type
Bytes
Test Code/Checksum
0
0FH
ROM/OTP
25
16H
1EH
Intel Signature
10H
11H
ROM/OTP
2
User Signature
12H
13H
OTP
2
Test Signature
14H
15H
ROM/OTP
2
Security Byte
1FH
or
3FH
ROM/OTP
2
UPI-C42 Intel Signature
20H
21H
ROM/OTP
2
User Defined UPI-C42 OTP EPROM Space
22H
3EH
ROM/OTP
30
ACCESS CODE
The following table summarizes the access codes required to invoke the Sync Mode, Signature Mode,
and the Security Bit, respectively. Also, the programming and verification modes are included for
comparison.
Control Signals
Data Bus
Access Code
Modes
Port 2
Port 1
T0 RST SS EA PROG V
DD
V
CC
0
1
2
3
4
5
6
7
0 1 2 3 0
1 2 3 4 5 6 7
Programming
0
0
1 HV
1
V
DDH
V
CC
Address
Addr
a
0
a
1
X X X X X X
Mode
0
1
1 HV
STB
V
DDH
V
CC
Data In
Addr
Verification
0
0
1 HV
1
V
CC
V
CC
Address
Addr
a
0
a
1
X X X X X X
Mode
1
1
1 HV
1
V
CC
V
CC
Data Out
Addr
Sync Mode
STB
0
HV 0
X
V
CC
V
CC
X
X
X
X
X
X
X
X
X X X
X X X X X X X X
High
Signature Prog
0
0
1 HV
1
V
DDH
V
CC
Addr. (see Sig Mode Table)
0 0 0
0
1 1 1 1 X X 1
Mode
0
1
1 HV
STB
V
DDH
V
CC
Data In
0 0 0
Verify
0
0
1 HV
1
V
CC
V
CC
Addr. (see Sig Mode Table)
0 0 0
1
1
1 HV
1
V
CC
V
CC
Data Out
0 0 0
Security
Prog
0
0
1 HV
1
V
DDH
V
CC
Address
0 0 0
Bit/Byte
0
1
1 HV
STB
V
DDH
V
CC
Data In
0 0 0
Verify
0
0
1 HV
1
V
CC
V
CC
Address
0 0 0
1
1
1 HV
1
V
CC
V
CC
Data Out
0 0 0
NOTE:
1. a
0
e
0 or 1; a
1
e
0 or 1. a
0
must
e
a
1
.
12