CAT28LV64 CATALYST [Catalyst Semiconductor], CAT28LV64 Datasheet
CAT28LV64
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CAT28LV64 Summary of contents
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... Fast Write Cycle Time: – 5ms Max. Commercial, Industrial and Automotive Temperature Ranges DESCRIPTION The CAT28LV64 is a low voltage, low power, CMOS 2 parallel E PROM organized 8-bits. It requires a simple interface for in-system programming. On-chip address and data latches, self-timed write cycle with auto- ...
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PIN CONFIGURATION DIP Package ( ...
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ABSOLUTE MAXIMUM RATINGS* Temperature Under Bias ................. – +125 C Storage Temperature ....................... – +150 C Voltage on Any Pin with (2) Respect to Ground ........... –2. with Respect to Ground ............... –2.0V ...
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D.C. OPERATING CHARACTERISTICS V = 3.0V to 3.6V, unless otherwise specified. cc Symbol Parameter I V Current (Operating, TTL ( Current (Standby, CMOS) SBC CC I Input Leakage Current LI I Output Leakage Current LO (3) ...
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Figure 1. A.C. Testing Input/Output Waveform INPUT PULSE LEVELS 0.0 V Figure 2. A.C. Testing Load Circuit (example) A.C. CHARACTERISTICS, Write Cycle V = 3.0V to 3.6V, unless otherwise specified. cc Symbol Parameter t Write ...
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... DEVICE OPERATION Read Data stored in the CAT28LV64 is transferred to the data bus when WE is held high, and both OE and CE are held low. The data bus is set to a high impedance state when either goes high. This 2-line control architec- ture can be used to eliminate bus contention in a system environment ...
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... Page Write The page write mode of the CAT28LV64 (essentially an extended BYTE WRITE mode) allows from bytes of data to be programmed within a single E cycle. This effectively reduces the byte-write time by a factor of 32. Following an initial WRITE operation (WE pulsed low, for t , and then high) the page write mode can begin by ...
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DATA Polling DATA polling is provided to indicate the completion of write cycle. Once a byte write or page write cycle is initiated, attempting to read the last byte written will output the complement of that data on I/O are ...
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... AC charac- INIT performed. The device is shipped from Catalyst with the software protection NOT ENABLED (the CAT28LV64 is in the standard operating mode). Figure 10. Write Sequence for Deactivating (1) 28LV64 F12 ...
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... Product Number * -40˚C to +125˚C is available upon request Notes: (1) The device used in the above example is a CAT28LV64NI-25T (PLCC, Industrial temperature, 250 ns Access Time, Tape & Reel). Doc. No. 25035-00 2/98 To allow the user the ability to program the device with PROM programmer (or for testing purposes) there is a software command sequence for deactivating the data protection ...