VRS51C1100 Datasheet, PDF (1/50 Pages) List of Unclassifed Manufacturers – Versa 8051 MCU with 128KB of IAP/ISP Flash

VRS51C1100
Datasheet
Rev 1.1
Versa 8051 MCU with 128KB of IAP/ISP Flash
Overview
The VRS51C1100 is based on the standard 8051
microcontroller architecture and is a pin compatible
drop-in replacement for the 8051.
The VRS51C1100 is aimed at a diversity of 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 memory,
64KB Data Flash memory, 1KB of RAM, 4 PWM
outputs, a UART, three 16-bit timers/counters, a
watchdog timer and power down features.
The VRS51C1000 is available with firmware that
enables In-System Programming (firmware based boot-
loader) of the Flash memory via the UART interface
(ISPVx version). General Flash memory programming
is supported by device programmers available from
Ramtron or other 3rd party commercial programmer
suppliers.
The VRS51C1100 is available in PLCC-44, QFP-44
and DIP-40 packages and functions over the industrial
temperature range.
FIGURE 1: VRS51C1100 FUNCTIONAL DIAGRAM
64KB
Data FLASH
8051
PROCESSOR
ADDRESS/
DATA BUS
64KB
Program
FLASH
1024 Bytes of
RAM
PORT 0
8
PORT 1
8
UART
PORT 2
8
2 INTERRUPT
INPUTS
PORT 3
8
TIMER 0
TIMER 1
TIMER 2
POWER
CONTROL
PORT 4
4
RESET
WATCHDOG
TIMER
PWM
4
Feature Set
• 80C51/80C52 pin compatible
• 64KB Program + 64KB Data Flash memory
• In-System / In-Application Flash Programming (ISP/IAP)
• Program voltage: 5V
• 1024 Bytes on chip data RAM
• Four 8-bit I/Os + one 4-bit I/O
• 4 PWM outputs on P1.3 to P1.7
• One Full Duplex UART serial port
• Three 16-bit Timers/Counters
• Watchdog Timer
• Bit operation instruction
• 8-bit Unsigned Multiply and Division instructions
• BCD arithmetic
• Direct and Indirect Addressing
• Two Levels of Interrupt Priority and Nested Interrupts
• Power saving modes
• Code protection function
• Low EMI (inhibit ALE)
• Operating Temperature Range -40ºC to +85ºC
FIGURE 2: VRS51C1100 QFP-44 AND PLCC-44 PIN OUT DIAGRAMS
P0.3/AD3
P0.2/AD2
P0.1/AD1
P0.0/AD0
VDD
P4.2
T2/P1.0
T2EX/P1.1
PWM0/P1.2
PWM1/P1.3
PWM2/P1.4
33
34
23
22
VRS51C1100
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
6
PWM3/P1.5
7
P1.6
P1.7
RES
RXD/P3.0
P4.3
TXD/P3.1
#INT0/P3.2
#INT1/P3.3
T0/P3.4
T1/P3.5
17
18
40
39
VRS51C1000
PLCC-44
29
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
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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