>NAME 1 40 20 21 >VALUE >NAME >VALUE >VALUE >NAME 44 >NAME >VALUE >NAME >VALUE >NAME >VALUE <b>JUMPER</b> >NAME >VALUE <b>CRYSTAL RESONATOR</b> >NAME >VALUE <b>CRYSTAL RESONATOR</b> >NAME >VALUE 1 <b>PIN HEADER</b> >NAME >VALUE >NAME >VALUE >NAME >VALUE >NAME >VALUE >NAME >VALUE >NAME >VALUE >NAME >VALUE >NAME >VALUE >NAME >VALUE >NAME >VALUE >NAME >VALUE >NAME >VALUE OUT GND VCC NC/TS >NAME >VALUE >VALUE >NAME 8-bit microprocessor based on MOS 6502. The W65C22 (W65C22N and W65C22S) Versatile Interface Adapter (VIA) is a flexible I/O device for use with the 65xx series microprocessor family. The W65C22 includes functions for programmed control of two peripheral ports (Ports A and B). Two program controlled 8-bit bidirectional peripheral I/O ports allow direct interfacing between the microprocessor and selected peripheral units. Each port has input data latching capability. Two programmable Data Direction Registers (A and B) allow selection of data direction (input or output) on an individual line basis. Also provided are two programmable 16-bit Interval Timer/Counters with latches. Timer 1 may be operated in a One-Shot Interrupt Mode with interrupts on each count to zero, or in a Free-Run Mode with a continuous series of evenly spaced interrupts. Timer 2 functions as both an interval and pulse counter. Serial Data transfers are provided by a serial to parallel/parallel to serial shift register. Application versatility is further increased by various control registers, including an Interrupt Flag Register, an Interrupt Enable Register and two Function Control Registers. 5V 32K x 8 CMOS 12ns SRAM 5V 8K x 8 CMOS EEPROM <b>JUMPER</b> <b>JUMPER</b> <b>CRYSTAL</b> <b>PIN HEADER</b> <b>Header 12</b> Standard 12-pin 0.1" header. Use with straight break away headers (SKU : PRT-00116), right angle break away headers (PRT-00553), swiss pins (PRT-00743), machine pins (PRT-00117), and female headers (PRT-00115).