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參數(shù)資料
| 型號： | P87C42 |
| 廠商： | INTEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | UNIVERSAL PERIPHERAL INTERFACE CHMOS 8-BIT SLAVE MICROCONTROLLER |
| 中文描述： | 8-BIT, OTPROM, 12.5 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | PLASTIC, DIP-40 |
| 文件頁數(shù)： | 12/25頁 |
| 文件大?。?/td> | 345K |
| 代理商： | P87C42 |
UPI-C42/UPI-L42
Table 3. Signature Mode Table
Address
Device
Type
No. of
Bytes
Test Code/Checksum
0
0FH
1EH
ROM/OTP
25
16H
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
Mode
0
0
1 HV
1
V
DDH
V
CC
Address
Addr
a
0
a
1
X X X X X X
0
1
1 HV
STB
V
DDH
V
CC
Data In
Addr
Verification
Mode
0
0
1 HV
1
V
CC
V
CC
Address
Addr
a
0
a
1
X X X X X X
1
1
1 HV
1
V
CC
V
CC
Data Out
Addr
Sync Mode
STB
High
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
Signature Prog
Mode
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
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
Bit/Byte
Prog
0
0
1 HV
1
V
DDH
V
CC
Address
0 0 0
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
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