TICPAL22V10Z-25C Datasheet, PDF (15/22 Pages) Texas Instruments – EPICE CMOS PROGRAMMABLE ARRAY LOGIC CIRCUITS

TICPAL22V10Z-25C, TICPAL22V10Z-30I
EPIC™ CMOS PROGRAMMABLE ARRAY LOGIC CIRCUITS
SRPS007C – D3323, SEPTEMBER 1989 – REVISED FEBRUARY 1992
Even though power dissipation is a function of the user’s device configuration and the operating frequency, the
TICPAL22V10Z is a lower powered solution than either the quarter-powered or half-powered bipolar devices.
The virtually zero standby power feature makes the TICPAL22V10Z the device of choice for low-duty-cycle
applications.
programming and erasability
Programming of the TICPAL22V10Z is achieved through floating-gate avalanche injection techniques. The
charge trapped on the floating gate remains after power has been removed, allowing for the nonvolatility of the
programmed data. The charge can be removed by exposure to light with wavelengths of less than 400 nm
(4000 Å). The recommended erasure wavelength is 253.7 nm (2537 Å), with erasure time of 60 to 90 minutes,
using a light source with a power rating of 12000 µW/cm² placed within 2.5 cm (one inch) of the device.
The TICPAL22V10Z is designed for programming endurance of 1000 write/erase cycles with a data retention
of ten years. To guarantee maximum data retention, the window on the device should be covered by an opaque
label. The fluorescent light in a room can erase a unit in three years or, in the case of a direct sunlight, erasure
can be complete in one week.
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