8051 / MCS-51 Family with DSP (Digital Signal Processing) Power

Embedded engineers has one more option in implementing DSP on 8051 / MCS-51 processor. Ramtron VRS51L2070.  This chip has MULT/ACCU/DIV with 32-bit hardware engine. It performs 16-bit signed multiplication and 32-bit addition in one cycle and 16-bit signed division in 5 cycles. Strong enough for DSP operations needs.

Key features:

• Up to 40-MIPS
• Single-cycle 8051 / MCS-51 -core
• Nonvolatile FRAM technology
• 64KB Flash with In-System/In-Application Programming
• 4KB SRAM
• JTAG program/debug interface
• Digital Signal Processing (DSP) extensions
• Dual UARTs with dedicated baud-rate generator up to 1.25 Mbps.
• 1 to 32 bits transaction  of enhanced SPI, speed up to 20 Mbps,
• Dual Pulse Width Counter
• Eight PWMs with up to 16-bit adjustable resolution, each with own timer.
• I2C interface,
• Three 16-bit general purpose timers/counters with three timer capture inputs,
• Watchdog timer, and 49 interrupts that share 16 interrupt vectors.
• Industrial temperature range

Application of  VRS51L2070 includes: embedded data acquisition, Industrial control, medical, instrumentation and automotive devices.

Abaut FRAM:

FRAM simplifies the design cycle by eliminating the code overhead accompanying Flash data storage, and the limited endurance and drawn-out write cycles of Flash/EEPROM. Unlike Flash, FRAM bytes can be modified without first erasing an entire sector, making it easier to use. And unlike Flash/EEPROM, FRAM provides virtually unlimited read/write cycles and fast data writes. The VRS51L3074 combines 8KB of FRAM memory with a fully-integrated, high-performance system-on-chip.

The VRS51L3074 is available in a 64-pin QFP, and currently is sampling at a cost under $5 in volume