VRS51C1000 Datasheet, PDF (1/48 Pages) Ramtron International Corporation – Versa 8051 MCU with 64KB of IAP/ISP Flash

VRS51C1000
Datasheet
Rev 1.9
Versa 8051 MCU with 64KB of IAP/ISP Flash
Overview
The VRS51C1000 is based on the standard 8051
microcontroller family architecture and is pin compatible
and a drop-in replacement for most 8051 MCUs.
The VRS51C1000 is ideal for a range of applications
requiring 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,
IKB of SRAM, 5 PWM output channels, a UART, three
16-bit timers, 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 suppliers.
The device also includes a fifth, 4-bit, I/O port mapped
into the “no connect” pins of the standard 8051/52
package, providing a total of 36 I/Os while maintaining
compatibility with standard 8051/82 pin outs.
The VRS51C1000 is available in PLCC-44, QFP-44
and DIP-40 packages and function over the industrial
temperature range.
FIGURE 1: VRS51C1000 FUNCTIONAL DIAGRAM
8051
PROCESSOR
ADDRESS/
DATA BUS
64KB
FLASH
1024 Bytes of
SRAM
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
5
Feature Set
• 8051/8052 pin compatible
• 64KB Flash memory
• In-System / In-Application Flash Programming (ISP/IAP)
• Program voltage: 5V
• 1024 Bytes on chip data SRAM
• Four 8-bit I/Os + one 4-bit I/O
• 5 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: VRS51C1000 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
P1.2
PWM0/P1.3
PWM1/P1.4
33
34
23
22
VRS51C1000
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
PWM2/P1.5
7
PWM3/P1.6
PWM4/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
1
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 x 208
Colorado, USA, 80921 ♦ 1-800-545-FRAM, 1-719-481-7000
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