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VRS51X560

Ramtron
Part Number VRS51X560
Manufacturer Ramtron
Description (VRS51X550 / VRS51X560) Versa 8051 MCUs
Published Dec 14, 2006
Detailed Description www.DataSheet4U.com VRS51x550/560 Datasheet Rev 1.3 Versa 8051 MCUs with 8/16KB Flash Overview The VRS51x550 and VRS51...
Datasheet PDF File VRS51X560 PDF File

VRS51X560
VRS51X560

Overview
www.
DataSheet4U.
com VRS51x550/560 Datasheet Rev 1.
3 Versa 8051 MCUs with 8/16KB Flash Overview The VRS51x550 and VRS51x560 are low-cost 8-bit microcontrollers based on the standard 80C51 microcontroller architecture.
They are pin compatible drop-in replacements for the 8051 Ideal for a wide range of applications requiring low to midrange amounts of program/data memory, coupled with streamlined peripheral support, the VRS51x550/560 devices feature 8KB/16KB, of Flash memory (respectively), 256 bytes of RAM, a UART, three 16-bit timers, a watchdog timer and power saving modes.
The VRS51x550 is available in 3.
3 (VRS51L550) or 5 volt versions (VRS51C550), while the VRS51x560 is available in a 5 volt version (VRS51C560).
All devices come in PLCC-44, QFP-44 and DIP-40 packages and operate in the industrial temperature range.
Flash can be programmed using a parallel programmer available from Ramtron or with a third party commercial programmer.
FIGURE 1: VRS51X550 / VRS51X560 FUNCTIONAL DIAGRAM P1.
4 P1.
3 Feature Set • • • • • • • • • • • • • • • • • • • 80C51/80C52 pin compatible 12 clock periods per machine cycle 8KB / 16KB on-chip Flash memory 256 Bytes on-chip data RAM 32 I/O lines on four 8-bit ports Full duplex serial port (UART) 3, 16-bit Timers/Counters Watchdog Timer 8-bit Unsigned Division / Multiply BCD arithmetic Direct and Indirect Addressing Two levels of interrupt priority and nested interrupts Power saving modes Code protection function Operates at a clock frequency of up to 40MHz Low EMI (inhibit ALE) Programming voltage: 12V Industrial Temperature range (-40°C to +85°C) 5V and 3V versions available (see ordering information) FIGURE 2: VRS51X550 / VRS51X560 PLCC AND QFP PINOUT DIAGRAMS P1.
2 T2EX/P1.
1 P0.
0/AD0 P0.
2/AD2 P1.
5 P1.
6 7 6 P0.
1/AD1 T2/P1.
0 VDD NC 1 P0.
3/AD3 40 39 P0.
4/AD4 P0.
5/AD5 P0.
6/AD6 P0.
7/AD7 #EA NC ALE #PSEN P2.
7/A15 8051 PROCESSOR ADDRESS/ DATA BUS P1.
7 RESET RXD/P3.
0 NC TXD/P3.
1 #INT0/P3.
2 VRS51x550/560 PLCC-44 8KB / 1...


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