The DS5001FP 128k Soft Microprocessor Chip is an 8051-compatible Secure Microcontroller family, which is based on nonvolatile RAM rather than ROM.
Dallas' "soft" microprocessors can be programmed after installation in a system, which facilitates frequent software upgrades, adaptive programs, customized systems, etc. The user-set program and data partitions can also be modified to optimize reprogramming.
Dallas' nonvolatile CMOS technology sets the standard for low-power consumption. With a user-supplied lithium battery, the on-chip power management circuitry can maintain all nonvolatile resources for greater than 10 years in the absence of external power.
DS5001FP also provides crashproof operation in portable systems by saving the operating state and providing a power-fail reset, power-fail interrupt, and watchdog timer.
The DS5001FP is intended for applications requiring large memory addressing. It includes bank switching that, with a little extra logic, enable it to address 252kbytes of data memory. The DS5001FP is available in a module that includes the RAM, a lithium cell and real-time clock (see the DS2251).
The DS5001FP is ideal for data logging applications that require large, nonvolatile memory storage. It easily connects to a Dallas real-time clock to add nonvolatile, time-stamped data entry.
Key Features
8051-compatible microprocessor adapts to its task:
Accesses up to 128kbytes of nonvolatile SRAM
In-system programming via on-chip serial port
Can modify its own program or data memory
Accesses memory on a separate bytewide bus
Performs CRC-16 check of NV RAM memory
Decodes memory and peripheral chip enables
Crashproof operation:
Maintains all nonvolatile resources for over 10 years
Power-fail reset
Early warning power-fail interrupt
Watchdog timer
SRAM for program/data storage (nonvolatile with user-supplied lithium)
Precision band-gap reference for power monitor
Fully 8051-compatible:
128kbytes scratchpad RAM
Two timer/counters
On-chip serial port
32 parallel I/O port pins
Software security available with DS5002FP Secure Microprocessor
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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