VRS51L1050

www.DataSheet4U.com VRS51L1050 Product Tech Brief Rev 1.0 Versa 3.3 Volt 8051 MCU with 64KB of IAP/ISP Flash General Description _________________ The VRS51L1050 is based on the standard 8051 microcontroller architecture and is a pin compatible drop-in replacement for most 8051 MCUs. The VRS51L1050 is designed for applications that require a large amount of program/data memory with non-volatile data storage and/or code/field based firmware upgrade capability coupled with comprehensive peripheral support. It features 64KB of In-System/In-Application Programmable Flash, 1KB of SRAM, an I2C-compatible interface, three 16-bit timers, two PWMs, a UART and the capability to exit power down mode from an external interrupt (INT0/INT1). Ideal for battery-powered applications, the VRS51L1050 registers and I/Os maintain their current value in power down mode, but the oscillator is disabled enabling the supply current to drop below 20uA. The VRS51L1050 is available with firmware that enables In-System Programming (firmware based boot-loader) of the Flash memory via the UART interface (ISPV3 version). General Flash memory programming is supported by device programmers available from Ramtron and 3rd party suppliers. The VRS51L1050 is available in PLCC-44, QFP-44 and DIP-40 packages and functions over the commercial temperature range. Features_________________________________ 8051/8052 pin compatible 64KB on-chip Flash memory In-System/In-Applica...