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Ramtron - (VRS51X570 / VRS51X580) Versa 8051 MCUs

Numéro de référence VRS51X570
Description (VRS51X570 / VRS51X580) Versa 8051 MCUs
Fabricant Ramtron 
Logo Ramtron 





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VRS51X570 fiche technique
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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
64KB
FLASH
1024 Bytes of
RAM
UART
2 INTERRUPT
INPUTS
TIMER 0
TIMER 1
TIMER 2
RESET
8051
PROCESSOR
ADDRESS/
DATA BUS
PORT 0
PORT 1
PORT 2
PORT 3
POWER
CONTROL
WATCHDOG
TIMER
PORT 4
PWM
8
8
8
8
4
5
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
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
6
7
1
40
39
VRS51x570/580
PLCC -4 4
17 29
18 28
P0.4/AD4
P0.5/AD5
P0.6/AD6
P0.7/AD7
#EA
P4.1
ALE
#PSEN
P2.7/A15
P2.6/A14
P2.5/A13
P0.3/AD3
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
33
34
23
22
VRS51x570/580
QFP-44
44 12
1 11
P2.4/A12
P2.3/A11
P2.2/A10
P2.1/A9
P2.0/A8
P4.0
VSS
XTAL1
XTAL2
#RD/P3.7
#WR/P3.6
Ramtron International Corporation ? http://www.ramtron.com
1850 Ramtron Drive Colorado Springs ? MCU customer service: 1-800-943-4625, 1-514-871-2447, ext. 208
Colorado, USA, 80921 ? 1-800-545-FRAM, 1-719-481-7000
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