DS5002FP_1 Datasheet, PDF (1/29 Pages) Dallas Semiconductor – Secure Microprocessor Chip

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DS5002FP
Secure Microprocessor Chip
FEATURES
· 8051-compatible microprocessor for
secure/sensitive applications
- Access 32, 64, or 128 kbytes of
nonvolatile SRAM for program and/or
data storage
- In-system programming via on-chip serial
port
- Capable of modifying its own program or
data memory in the end system
· Firmware security features
- Memory stored in encrypted form
- Encryption using on-chip 64-bit key
- Automatic true random key generator
- Self Destruct Input (SDI)
- Optional top coating prevents microprobe
(DS5002FPM)
- Improved security over previous
generations
- Protects memory contents from piracy
· Crashproof operation
- Maintains all nonvolatile resources for
over 10 years in the absence of power
- Power-fail reset
- Early warning power-fail interrupt
- Watchdog timer
PIN ASSIGNMENT
P0.4AD4
CE2
PE2
BA9
P0.3/AD3
BA8
P0.2/AD2
BA13
P0.1/AD1
R/W
P0.0/AD0
VCC0
VCC
MSEL
P1.0
BA14
P1.1
BA12
P1.2
BA7
P1.3
PE3
PE4
BA6
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65
1
64
2
63
3
62
4
61
5
60
6
59
7
58
8
57
9
56
10
DS5002FP
55
11
54
12
53
13
52
14
51
15
50
16
49
17
48
18
47
19
46
20
45
21
44
22
43
23
42
24
41
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
P2.6/A14
CE3
CE4
BD3
P2.5/A13
BD2
P2.4/A12
BD1
P2.3/A11
BD0
VLI
SDI
GND
P2.2/A10
P2.1/A9
P2.0/A8
XTAL1
XTAL2
P3.7/RD
P3.6/WR
P3.5/TI
PF
VRST
P3.4/T0
DESCRIPTION
The DS5002FP Secure Microprocessor Chip is a secure version of the DS5001FP 128k Soft
Microprocessor Chip. In addition to the memory and I/O enhancements of the DS5001FP, the Secure
Microprocessor Chip incorporates the most sophisticated security features available in any processor. The
security features of the DS5002FP include an array of mechanisms which are designed to resist all levels
of threat, including observation, analysis, and physical attack. As a result, a massive effort would be
required to obtain any information about memory contents. Furthermore, the “soft” nature of the
DS5002FP allows frequent modification of the secure information, thereby minimizing the value of any
secure information obtained by such a massive effort.
Note: Some revisions of this device may incorporate deviations from published specifications known
as errata. Multiple revisions of any device may be simultaneously available through various sales
channels. For information about device errata, click here: http://dbserv.maxim-ic.com/errata.cfm.
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