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REV: 070605

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: www.maxim-ic.com/errata.

FEATURES

§ 8051-Compatible Microprocessor Adapts

to Its Task

- Accesses between 8kB and 64kB of

nonvolatile SRAM

- In-system programming via on-chip serial

port

- Can modify its own program or data

memory

- Accesses memory on a separate byte-wide

bus

§ Crash-Proof Operation

- Maintains all nonvolatile resources for

over 10 years

- Power-fail Reset

- Early Warning Power-fail Interrupt

- Watchdog Timer

- User-supplied lithium battery backs user

SRAM for program/data storage

§ Software Security

- Executes encrypted programs to prevent

observation

- Security lock prevents download

- Unlocking destroys contents

§ Fully 8051 Compatible

- 128 bytes scratchpad RAM

- Two timer/counters

- On-chip serial port

- 32 parallel I/O port pins

PIN CONFIGURATION

ORDERING INFORMATION

PART

TEMP RANGE

MAX CLOCK

SPEED (MHz)

PIN-PACKAGE

DS5000FP-16

0°C to +70°C

16

80 QFP

DS5000FP+16

0°C to +70°C

16

80 QFP

+ Denotes a Pb-free/RoHS-compliant device.

DS5000FP

Soft Microprocessor Chip

www.maxim-ic.com

This data sheet must be used in conjunction with the Secure

Microcontroller User’s Guide, which contains operating information.

This data sheet provides ordering information, pinout, and electrical

specifications. Download the Secure Microcontroller User’s Guide

at www.maxim-ic.com/microcontrollers.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

P0.4/AD4

N.C.

N.C.

BA9

P0.3/AD3

BA8

P0.2/AD2

BA13

P0.1/AD1

R/W

P0.0/AD0

P1.0

BA14

P1.1

BA12

P1.2

BA7

P1.3

N.C.

N.C.

BA6

P2.6/A14

N.C.

N.C.

BD3

P2.5/A13

BD2

P2.4/A12

BD1

P2.3/A11

BD0

GND

GND

P2.2/A10

P2.1/A9

P2.0/A8

XTAL1

XTAL2

P3.7/RD

P3.6/WR

P3.5/T1

N.C.

N.C.

P3.4/T0

64

63

62

61

60

59

58

57

56

55

54

53

52

51

50

49

48

47

46

45

44

43

42

41

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80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65

DS5000FP

TOP VIEW

QFP