CAST CZ80PIO
The CZ80PIO, hereinafter referred to as PIO, is a dual-port device which can be programmed by the system software to function as a broad range of peripheral devices that are compatible with the Z80CPU such as most keyboards, printers etc. The CZ80PIO is a microcode-free design developed for reuse in ASIC and FPGA implementations. The design is strictly synchronous, with no internal tri-states and a synchronous reset.| Part No. | CZ80PIO |
|---|---|
| Datasheet | CZ80PIO Download |
| Manufacturer | CAST |
| Description | Hereinafter Referred to As PIO is a Dual-Port Device |
| Buy | Stock & Price |
GENERAL DESCRIPTION
System design is simplified because the PIO connects directly to the Z80CPU with no additional logic. In larger systems, address decoders and buffers may be required. Symbol 8 8 data_i data_o data_triFEATURES
ardy astb_n 8 8 8●
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● Provides a direct interface between Z80 microprocessor systems and peripheral devices Two ports with interrupt-driven handshake for fast response Four programmable operating modes:
● Output Mode (both ports)
● Input Mode (both ports)
● Bi-directional (Port A only)
● Bit Control Mode (both ports) Programmable interrupts on peripheral status conditions porta_i clk porta_o cdselect porta_tr portselect ce_n CZ80PIO m1_n iorq_n brdy rd_n bstb_n int_n ieo iei portb_i portb_ o
● 8 8 8
APPLICATIONS
●● Programmable, dual - port device Interface for a wide range of peripheral devices such as:
● Keyboards
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● Printers Paper table readers PROM programmers etc. CAST, Inc. May 2004 Page 1 CZ80PIO Megafunction Datasheet Pin
DESCRIPTION
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