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VRS51X580

Ramtron
Part Number VRS51X580
Manufacturer Ramtron
Description (VRS51X570 / VRS51X580) Versa 8051 MCUs
Published Dec 14, 2006
Detailed Description www.DataSheet4U.com VRS51x570/580 Datasheet Rev 1.2 Versa 8051 MCUs with 32/64KB Overview The VRS51x570 and the VRS51x...
Datasheet PDF File VRS51X580 PDF File

VRS51X580
VRS51X580

Overview
www.
DataSheet4U.
com VRS51x570/580 Datasheet Rev 1.
2 Versa 8051 MCUs with 32/64KB Overview The VRS51x570 and the VRS51x580 are low cost 8-bit microcontrollers based on the standard 80C51 microcontroller family architecture.
They are pin compatible and drop-in replacements for most 8051 MCUs.
Ideal for a wide range of applications requiring large amounts of program/data memory, coupled with comprehensive peripheral support, the VRS51x570/580 devices include 32KB/64KB of Flash memory, respectively, and 1KB of SRAM, 5 PWM output channels, a UART, three 16-bit timers, a Watch Dog timer and power down features.
These devices also include a fifth, 4-bit, I/O port mapped into the “no connect” pins of the standard 8051/52 package.
This provides a total of 36 I/Os while maintaining compatibility with standard 80C51/52 pin outs.
The VRS51x570 and VRS51x580 are available in PLCC-44, QFP-44 and DIP-40 packages in the Industrial temperature range.
The Flash memory can be programmed using programmers from Ramtron or other 3rd party commercial programmer suppliers.
FIGURE 1: VRS51X570 / VRS51X580 FUNCTIONAL DIAGRAM Feature Set • • • • • • • • • • • • • • • • • • • • 80C51/80C52 pin compatible 12 clock periods per machine cycle 32KB / 64KB on-chip Flash memory 1024 Bytes on-chip data RAM 36 I/O lines: P0-P3 = 8-bit, P4 = 4-bit 5-Channel PWM on P1.
3 to P1.
7 Full duplex serial port (UART) Three 16-bit Timers/Counters Watch Dog 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: VRS51X570 / VRS51X580 PLCC AND QFP PINOUT DIAGRAMS PWM0/P1.
3 PWM1/P1.
4 P1.
2 T2EX/P1.
1 P0.
0/AD0 P0.
2/AD2 PWM2/P1.
5 PWM3/P1.
6 PWM4/P1.
7 RESET RXD/P3.
0 P4.
3 TXD/P3.
1 #IN...


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