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VMX51C900

Ramtron
Part Number VMX51C900
Manufacturer Ramtron
Description Versa Mix 8051 MCU
Published Dec 14, 2006
Detailed Description www.DataSheet4U.com VMX51C900 Datasheet Rev 1.2 Versa Mix 8051 MCU with LCD Controller and ADC Overview The VMX51C900 ...
Datasheet PDF File VMX51C900 PDF File

VMX51C900
VMX51C900

Overview
www.
DataSheet4U.
com VMX51C900 Datasheet Rev 1.
2 Versa Mix 8051 MCU with LCD Controller and ADC Overview The VMX51C900 is an 8-bit microcontroller with 8KB of Flash memory, 256 bytes of RAM and based on the architecture of the standard 80C51 microcontroller.
The VMX51C900 includes extra features such as a 4 Channel 8-bit A/D Converter, 2 PWM outputs and 14 segment x 4 common LCD driver.
The VMX51C900 hardware features make it a versatile and cost-effective controller for a wide range of embedded applications.
The Flash memory can be programmed using a parallel programmer available from Ramtron.
Support is also available from 3rd party commercial programmer manufacturers.
The VMX51C900 is available in PLCC-44, QFP-44 and DIP-40 packages and operates over the industrial temperature range.
FIGURE 1: VMX51C900 BLOCK DIAGRAM P1.
3 P1.
2/PWMA P1.
1/T2EX P1.
0/T2 P4.
2 Features • • • • • • • • • • • • • • • • • • 80C51/80C52 pin compatible 8KB on-chip Flash memory 256 Bytes on-chip data RAM 4 8-bit I/O ports and 1 4-bit I/O port 4-Channel, 8-bit A/D Converter LCD Driver: 14-Segment x 4-Common 2-PWM Outputs UART serial port 3 16-bit Timers/Counters Watchdog Timer BCD arithmetic + 8-bit Unsigned Multiply and Division 2 levels of Interrupt Priority and nested Interrupts Power saving modes Low EMI (ALE disable) Code protection function Operates at a clock frequency of up to 25MHz Industrial Temperature range (-40°C to +85°C) 5V version available FIGURE 2: VMX51C900 PLCC-44 AND QFP-44 PIN OUT DIAGRAMS P0.
0/AD0/LCDSEG13 P0.
2/AD2/LCDSEG11 P0.
3/AD3/LCDSEG10 40 39 8051 PROCESSOR ADDRESS/ DATA BUS PWMB/P1.
5 7 P1.
4 6 P0.
1/AD1/LCDSEG12 VDD 1 P0.
4/AD4/LCDSEG9 P0.
5/AD5/LCDSEG8 P0.
6/AD6/LCDSEG7 P0.
7/AD7/LCDSEG6 8KB FLASH 256 Bytes of RAM UART Serial port 2 INTERRUPT INPUTS TIMER 0 TIMER 1 TIMER 2 RESET POWER CONTROL P1.
6 PORT 0 8 P1.
7 RES RXD/P3.
0 P4.
3 PORT 1 8 TXD/P3.
1 #INT0/P3.
2 #INT1/P3.
3 ADCIN0/T0/P3.
4 ADCIN1/T1/P3.
5 17 18 VMX51C900 PLCC-44 #EA P4.
1 ALE/LCDSEG5 #PSEN...


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