3 Stück / 3 pieces Z8440AB1 Z80A
SIO-0 SERIAL INPUT/OUTPUT CONTROLLER
with 4MHz in DIP40 package
Z8440AB1  Z8440AB1   Z8440AB1   Z8440AB1
Z8440AB1
The Z80 SIO Serial lnput/Output Controller is a dualchannel data communication interface with extraordinary versatility and capability. Its basic functions as a serial-to-parallel, parallel-to-serial converter/ controller can be programmed by a CPU for a broad range of serial communication applications. The device supports all common asynchronous and synchronous protocols, byte- or bit-oriented and performs all of the functions traditionally done by UARTs, USARTs and synchronous communication controllers combined, plus additional functions traditionally performed by the CPU. Moreover, it does this on two fully-independent channels, with an exceptionally sophisticated interrupt structure that allows very fast transfers.
  • TWO INDEPENDENT FULL-DUPLEX CHANNELS, WITH SEPARATE CONTROL AND STATUS LINES FOR MODEMS OR OTHER DEVICES
  • DATA RATES OF 0 TO 500K BITS/SECOND IN THE XL CLOCK MODE WITH A 2.5MHz CLOCK (Z8440), OR 0 TO 800K BITS/SECOND WITH A 4.0MHz CLOCK (Z8440A) 
  • ASYNCHRONOUS PROTOCOLS : EVERYTHING NECESSARY FOR COMPLETE MESSAGES IN 5, 6, 7 OR 8 BITS/CHARACTER. INCLUDES VARIABLE STOP BITS AND SEVERAL CLOCK-RATE MULTIPLIERS; BREAK GENERATION AND DETECTION ; PARITY ; OVERRUN AND FRAMING ERROR DETECTION 
  • SYNCHRONOUS PROTOCOLS: EVERYTHING NECESSARY FOR COMPLETE BIT- OR BYTEORIENTED MESSAGES IN 5, 6, 7 OR 8 BITS/CHARACTER, INCLUDING IBM BISYNC, SDLC, HDLC, CCITT-X.25 AND OTHERS. AUTOMATIC CRC GENERATION/CHECKING SYNC CHARACTER AND ZERO INSERTION/ DELETION, ABORT GENERATION/DETECTION AND FLAG INSERTION 
  • RECEIVER DATA REGISTERS QUADRUPLY BUFFERED, TRANSMITTER REGISTERS DOUBLY BUFFERED 
  • HIGHLY SOPHISTICATED AND FLEXIBLE DAISY-CHAIN INTERRUPT VECTORING FOR INTERRUPTS WITHOUT EXTERNAL LOGIC

NOT PULLED - NOT USED - NOT REFURBISHED - NOT SOLDERED - NOT RE-MARKED - NOT FAKED EXCLUSIVELY NEW OLD STOCK (NOS)
AUSSCHLIESSLICH NUR ALTE NEUE WARE (NOS) aus Altlagerbestand - entnommen aus der original Verpackung (siehe Foto).
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