VRS51L3072

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. FIGURE 1: VRS51L3072 FUNCTIONAL DIAGRAM Feature Set o o o o o o o o o o o o o o o o o o o o o 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 o FIGURE 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