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VRS51L550-25-LG PDF预览

VRS51L550-25-LG

更新时间： 2024-11-13 07:05:47
品牌 Logo 应用领域
其他 - ETC 闪存微控制器
页数 文件大小 规格书
40页 1724K
描述
Versa 8051 MCUs with 8/16KB Flash

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VRS51L550-25-LG 数据手册

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VRS51x550/560  
Datasheet  
Rev 1.3  
Versa 8051 MCUs with 8/16KB Flash  
Overview  
Feature Set  
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80C51/80C52 pin compatible  
The VRS51x550 and VRS51x560 are low-cost 8-bit  
microcontrollers based on the standard 80C51  
microcontroller architecture. They are pin compatible  
drop-in replacements for the 8051  
12 clock periods per machine cycle  
8KB / 16KB on-chip Flash memory  
256 Bytes on-chip data RAM  
32 I/O lines on four 8-bit ports  
Full duplex serial port (UART)  
3, 16-bit Timers/Counters  
Watchdog 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  
Ideal for a wide range of applications requiring low to  
midrange amounts of program/data memory, coupled  
with streamlined peripheral support, the VRS51x550/560  
devices feature 8KB/16KB, of Flash memory  
(respectively), 256 bytes of RAM, a UART, three 16-bit  
timers, a watchdog timer and power saving modes.  
The VRS51x550 is available in 3.3 (VRS51L550) or 5  
volt versions (VRS51C550), while the VRS51x560 is  
available in a 5 volt version (VRS51C560). All devices  
come in PLCC-44, QFP-44 and DIP-40 packages and  
operate in the industrial temperature range. Flash can  
be programmed using a parallel programmer available  
from Ramtron or with a third party commercial  
programmer.  
Industrial Temperature range (-40°C to +85°C)  
5V and 3V versions available (see ordering information)  
FIGURE 2: VRS51X550 / VRS51X560 PLCC AND QFP PINOUT DIAGRAMS  
FIGURE 1: VRS51X550 / VRS51X560 FUNCTIONAL DIAGRAM  
6
40  
7
1
39  
P1.5  
P1.6  
P0.4/AD4  
P0.5/AD5  
P0.6/AD6  
P0.7/AD7  
#EA  
P1.7  
8051  
PROCESSOR  
ADDRESS/  
DATA BUS  
RESET  
RXD/P3.0  
NC  
VRS51x550/560  
PLCC-44  
NC  
ALE  
TXD/P3.1  
#INT0/P3.2  
#INT1/P3.3  
T0/P3.4  
T1/P3.5  
#PSEN  
P2.7/A15  
P2.6/A14  
P2.5/A13  
8KB / 16KB  
FLASH  
PORT 0  
8
8
8
8
17  
18  
29  
28  
256  
Bytes of RAM  
PORT 1  
PORT 2  
PORT 3  
UART  
2 INTERRUPT  
INPUTS  
33  
23  
22  
34  
P0.3/AD3  
P0.2/AD2  
P0.1/AD1  
P2.4/A12  
P2.3/A11  
P2.2/A10  
TIMER 0  
TIMER 1  
TIMER 2  
POWER  
CONTROL  
P0.0/AD0  
VDD  
P2.1/A9  
P2.0/A8  
VRS51x550/560  
QFP-44  
NC  
T2/P1.0  
T2EX/P1.1  
P1.2  
NC  
VSS  
WATCHDOG  
TIMER  
XTAL1  
XTAL2  
#RD/P3.7  
#WR/P3.6  
RESET  
P1.3  
44  
P1.4  
12  
11  
1
Ramtron International Corporation  
1850 Ramtron Drive Colorado Springs  
Colorado, USA, 80921  
http://www.ramtron.com  
MCU customer service: 1-800-943-4625, 1-514-871-2447, ext. 208  
1-800-545-FRAM, 1-719-481-7000  
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