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VRS51X580 Dataheets PDF



Part Number VRS51X580
Manufacturers Ramtron
Logo Ramtron
Description (VRS51X570 / VRS51X580) Versa 8051 MCUs
Datasheet VRS51X580 DatasheetVRS51X580 Datasheet (PDF)

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, respectivel.

  VRS51X580   VRS51X580



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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 #INT0/P3.2 #INT1/P3.3 T0/P3.4 T1/P3.5 7 6 1 P0.3/AD3 40 39 P0.1/AD1 T2/P1.0 VDD P4.2 P0.4/AD4 P0.5/AD5 P0.6/AD6 P0.7/AD7 #EA P4.1 ALE #PSEN P2.7/A15 VRS51x570/580 PLCC-44 8051 PROCESSOR ADDRESS/ DATA BUS 17 18 28 29 P2.6/A14 P2.5/A13 #RD/P3.7 P2.0/A8 P2.1/A9 P2.2/A10 XTAL2 XTAL1 P4.0 #WR/P3.6 64KB FLASH 1024 Bytes of RAM PORT 0 8 P0.4/AD4 P0.5/AD5 P0.6/AD6 #PSEN P2.7/A15 UART PORT 2 8 P0.3/AD3 34 33 23 22 P2.6/A14 P2.5/A13 PORT 1 8 P0.7/AD7 P4.1 #EA ALE P2.4/A12 P2.3/A11 VSS P2.4/A12 P2.3/A11 P2.2/A10 2 INTERRUPT INPUTS TIMER 0 TIMER 1 TIMER 2 RESET POWER CONTROL WATCHDOG TIMER PORT 3 8 P0.2/AD2 P0.1/AD1 P0.0/AD0 VDD P4.2 T2/P1.0 T2EX/P1.1 P1.2 PWM0/P1.3 PWM1/P1.4 44 12 11 VRS51x570/580 QFP-44 P2.1/A9 P2.0/A8 P4.0 VSS XTAL1 XTAL2 #RD/P3.7 #WR/P3.6 PORT 4 4 1 PWM 5 PWM2/P1.5 PWM3/P1.6 PWM4/P1.7 RESET RXD/P3.0 P4.3 TXD/P3.1 #INT0/P3.2 #INT1/P3.3 T0/P3.4 T1/P3.5 Ramtron International Corporation 1850 Ramtron Drive Colorado Springs Colora.


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