VMX51C900
Key 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
