Rainbow-electronics ATF20V8BQL User Manual

1Features• Industry-standard Architecture– Emulates Many 24-pin PALs®– Low-cost Easy-to-use Software Tools • High-speed Electrically-erasable Programm

ATF20V8B(Q)(L)10Complex Mode Logic Diagram

ATF20V8B(Q)(L)11Simple Mode Logic Diagram

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ATF20V8B(Q)(L)15Note: 1. Shaded parts are obsolete with a last time buy date of 19 August 1999.Using “C” Product for IndustrialTo use commercial produ

ATF20V8B(Q)(L)16Note: 1. Shaded parts are obsolete with a last time buy date of 19 August 1999.Using “C” Product for IndustrialTo use commercial produ

ATF20V8B(Q)(L)17Packaging Information.045(1.14) X 45°PIN NO. 1IDENTIFY.032(.813).026(.660).050(1.27) TYP.300(7.62) REF SQ.045(1.14) X 30° - 45°.022(.5

© Atmel Corporation 2001.Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standa

ATF20V8B(Q)(L)2DescriptionThe ATF20V8B is a high-performance CMOS (electrically-erasable) programmable logic device (PLD) that utilizesAtmel’s proven

ATF20V8B(Q)(L)3Notes: 1. Not more than one output at a time should be shorted. Duration of short circuit test should not exceed 30 sec.2. Shaded part

ATF20V8B(Q)(L)4AC Waveforms(1)Note: 1. Timing measurement reference is 1.5V. Input AC driving levels are 0.0V and 3.0V, unless otherwise specified.Not

ATF20V8B(Q)(L)5Input Test Waveforms and Measurement LevelstR, tF < 5 ns (10% to 90%)Output Test LoadsCommercialNote: 1. Typical values for nominal

ATF20V8B(Q)(L)6Input and I/O Pull-upsAll ATF20V8B family members have internal input and I/Opull-up resistors. Therefore, whenever inputs or I/Os are

ATF20V8B(Q)(L)7Note: 1. Only applicable for version 3.4 or lower.ATF20V8B Registered Mode PAL Device Emulation/PAL Replacement. The registeredmode is

ATF20V8B(Q)(L)8Registered Mode Logic Diagram

ATF20V8B(Q)(L)9ATF20V8B Complex Mode PAL Device Emulation/PAL Replacement. In the complexMode, combinatorial output and I/O functions are possible.Pin