Intel UPI-C42, UPI-L42 specifications Sync Mode Timing Diagrams, Applications

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UPI-C42/UPI-L42

SYNC MODE TIMING DIAGRAMS

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Minimum Specifications

SYNC Operation Time, tSYNC e 3.5 XTAL 2 Clock cycles. Reset Time, tRS e 4 tCY.

NOTE:

The rising and falling edges of T0 should occur during low state of XTAL 2 clock.

APPLICATIONS

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Figure 7. UPI-C42 Keyboard Controller

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Figure 8. 8088-UPI-C42 Interface

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Contents DIP Pin ConfigurationPin Description UPI-C42/UPI-L42Block Diagram UPI-C42/L42 Product Selection Guide UPI-C42 Low power Chmos version of the UPI-42Intel 82C42 UPI-L42 The low voltage 3.3V version of the UPI-C42Bits of Status UPI-42 Compatible FeaturesIBF OBF UPI-C42 Features Program Memory Bank SwitchInterrupt Routines Suspend Suspend Mode SummaryNew Instructions NEW UPI-C42 InstructionsRDÝ, WRÝ XTAL1, XTAL2Xtal Programming and Verifying the UPI-C42BUS ProgVerify Quick-Pulse Programming AlgorithmSecurity BIT Security BIT PROGRAMMING/ VerificationSync Mode Signature ModeVerification Access Code Applications Sync Mode Timing DiagramsUPI-C42 80-Column Matrix Printer Interface UPI-C42-8243 Keyboard ScannerRESET, SS XTAL2, ResetAbsolute Maximum Ratings UPI-C42 UPI-L42DC Characteristics DBB Read AC CharacteristicsDBB Write AC Characteristics Port AC Characteristics DMAClock AC Testing INPUT/OUTPUT Waveform AC Testing Load Circuit AC CHARACTERISTICS-PROGRAMMING UPI-C42 and UPI-L42Driving from AN External Source LC Oscillator Mode Crystal Oscillator ModeRead OPERATION-DATA BUS Buffer Register WaveformsWrite OPERATION-DATA BUS Buffer Register Clock TimingVerify Mode Combination PROGRAM/VERIFY ModeWaveforms DMA Port Timing During External Access EAPort Accumulator UPI Instruction SetJmpp @A Revision Summary