Datasheet4U Logo Datasheet4U.com

MC146823 Datasheet CMOS Parallel Interface

Manufacturer: Motorola Semiconductor

Overview: ® MOTOROLA MC146823 Advance Information CMOS PARALLEL INTERFACE CMOS IHIGH-DENSITY HIGH-PERFORMANCE SILICON-GATE) PARALLEL INTERFACE The MC146823 CMOS parallel interface (CPI) provides a universal means of interfacing external signals with the MC146805E2 CMOS microprocessor and other multiplexed bus microprocessors. The unique MOTEL circuit on-chip allows direct interfacing to most industry CMOS microprocessors, as well as many NMOS MPUs. I The MC146823 CPI includes three bidirectional 8-bit ports or 241/0 pins. Each 1/0 line may be separately established as an input or an output under program control via data direction registers associated with each port. Using the bit change and test instructions of the MC146805E2, each individual 1/0 pin can be separately accessed. All port registers are readlwrite bytes to acmodate read-modify-write instructions.

Key Features

  • include:.
  • 24 Individually Programmed 1/0 Pins.
  • MOTEL Circuit for Bus Compatibility with Many Microprocessors.
  • Multiplexed Bus Compatibility with: MC146805E2, MC6801, MC6803, and Competitive Microprocessors.
  • Data Direction Registers for Ports A, B, and C.
  • Four Port CliO Pins May Be Used as Control Lines for: Four Interrupt Inputs Input Byte Latch Output Pulse Handshake Activity.
  • 15 Registers Addressed as Memory Locations.
  • Handshake C.

More Datasheets from Motorola Semiconductor

Part Number Description
MC1468705F2 8-Bit EPROM Microcomputer
MC14174B Hex Type D Flp-Flop
MC14175B Quad Type D Flp-Flop
MC1439 (MC1439 / MC1539) Uncompensated Operational Amplifier
MC14413 (MC14413 / MC14414) Pulse Code Modulation Sampled Data Filters
MC14414 (MC14413 / MC14414) Pulse Code Modulation Sampled Data Filters
MC144143 Closed Caption Decoder CMOS
MC14422 Remote Control Transmitter
MC14450 Oscillator / Divider / Buffer
MC145415 Dual Tunable Linear Phase Low Pass Sampled Data Filters

MC146823 Distributor