VRS51L3072
Technical Brief
Rev 1.0
High-Performance 8051 MCU + 2KB FRAM
Overview
The VRS51L3072 is a high performance, 8051-based microcontroller
coupled with a fully integrated array of peripherals for addressing a
broad range of embedded design applications.
Based on a powerful 40-MIPS, single-cycle, 8051 microprocessor,
the VRS51L3072’s memory sub-system features 64KB of Flash
and 4352 bytes of SRAM and 2048 Bytes of nonvolatile FRAM
(ferroelectric random access memory) memory.
Support peripherals include a hardware based arithmetic unit capable
of performing complex mathematical operations, a JTAG interface for
Flash programming and non-intrusive in-circuit debugging/emulation,
an internal oscillator, and a watchdog timer.
Communication and control of external devices is facilitated via an
assortment of digital peripherals such as an enhanced, fully
configurable SPI bus, an I²C interface, dual UARTs with dedicated
baud rate generators, three 16-bit timers, 8 PWM controllers each
with a 16-bit timer, and 2 pulse width counter modules.
The VRS51L3072 operates from 3.0 to 3.6 volts over the industrial
temperature range and is available in a QFP-64 package.
F
IGURE
1: VRS51L3072 F
UNCTIONAL
D
IAGRAM
Feature Set
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8051 High Performance Single Cycle Processor
(Operation up to 40 MIPS)
64KB Flash Program Memory
(In-System/ln-Application Programmable)
4352 Bytes of SRAM (4KB + 256)
(Ext. 4KB can be used for program or data memory)
2048 Bytes of on-chip FRAM memory
JTAG Interface for Flash Programming and Non-Intrusive
Debugging/In-Circuit Emulation
MULT/DIV/ACCU Unit including Barrel Shifter
56 General Purpose I/Os (64/44-pin version)
2 Serial UARTs/2 Baud Rate Generators (20-bit)
Enhanced SPI Interface (fully configurable word size)
2
Fully Configurable I C Interface (Master/Slave)
16 External Interrupt Pins/Interrupt On Port Pin Change
16-bit General Purpose Timer/Counters
2 Pulse Width Counter Modules
8 PWM Controller Outputs with Individual Timers
PWMs can be used as General Purpose Timers
Internal Oscillator
Dynamic System Clock Frequency Adjustment
Power Saving Features
Power-On Reset/Brown-Out Detect
Watchdog Timer
Operating voltage: 3.0V to 3.6V
Operating Temperature -40°C to +85°C
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F
IGURE
2: VRS51L3072 QFP-64
Ramtron International Corporation
1850 Ramtron Drive Colorado Springs
Colorado, USA, 80921
http://www.ramtron.com
mcuinfo@ramtron.com
1-800-545-FRAM, 1-719-481-7000
RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
