DS5000-32-16+ Analog Devices

DS5000(T) Soft Microcontroller Module www.maxim-ic.com FEATURES PIN ASSIGNMENT 8-Bit 8051-Compatible Microcontroller Adapts to Task at Hand 8 or 32 kbytes of Nonvolatile RAM for P1.0 1 40 V CC Program and/or Data Memory Storage P1.1 2 39 P0.0 AD0 Initial Downloading of Software in End DS5000(T) P1.2 3 38 P0.1 AD1 System via On-Chip Serial Port P1.3 4 37 P0.2 AD2 Capable of Modifying Its Own Program P1.4 5 36 P0.3 AD3 and/or Data Memory in End Use P1.5 6 35 P0.4 AD4 Crashproof Operation P1.6 7 34 P0.5 AD5 Maintains All Nonvolatile Resources for 10 P1.7 8 33 P0.6 AD6 Years in the Absence of V at Room CC RST 9 32 P0.7 AD7 Temperature RXD P3.0 10 31 EA Power-Fail Reset TXD P3.1 11 30 ALE Early Warning Power-Fail Interrupt INT0 P3.2 12 29 PSEN Watchdog Timer INT1 P3.3 13 28 P2.7 A15 Software Security Feature T0 P3.4 14 27 P2.6 A14 Executes Encrypted Software to Prevent T1 P3.5 15 26 P2.5 A13 Unauthorized Disclosure WR P3.6 16 25 P2.4 A12 On-Chip, Full-Duplex Serial I/O Ports RD P3.7 17 24 P2.3 A11 Two On-Chip Timer/Event Counters XTAL2 18 23 P2.2 A10 32 Parallel I/O Lines XTAL1 19 22 P2.1 A9 Compatible with Industry Standard 8051 GND 20 21 P2.0 A8 Instruction Set and Pinout Optional Permanently Powered Real-Time 40-Pin Encapsulated Package Clock (DS5000T) DESCRIPTION The DS5000(T) Soft Microcontroller Module is a fully 8051-compatible 8-bit CMOS microcontroller that offers softness in all aspects of its application. This is accomplished through the comprehensive use of nonvolatile technology to preserve all information in the absence of system V . The internal CC program/data memory space is implemented using either 8 or 32 kbytes of nonvolatile CMOS SRAM. Furthermore, internal data registers and key configuration registers are also nonvolatile. An optional real- time clock (RTC) gives permanently powered timekeeping. The clock keeps time to a hundredth of a second using an on-board crystal. Note: This data sheet provides ordering information, pinout, and electrical specifications. Refer to the Secure Microcontroller Users Guide for operating information. 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. 1 of 19 REV: 070706 DS5000(T) ORDERING INFORMATION MAX CRYSTAL PART RAM SIZE (kB) TIMEKEEPING SPEED (MHz) DS5000-32-16 32 16 No DS5000-32-16+ 32 16 No DS5000T-32-16 32 16 Yes DS5000T-32-16+ 32 16 Yes + Denotes a lead-free package. DS5000(T) BLOCK DIAGRAM Figure 1 2 of 19