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P4C148-45LC Datasheet(PDF) 3 Page - Pyramid Semiconductor Corporation |
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P4C148-45LC Datasheet(HTML) 3 Page - Pyramid Semiconductor Corporation |
3 / 10 page P4C148/P4C149 Page 3 of 10 Document # SRAM104 REV B Notes: 1. Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to MAXIMUM rating condi- tions for extended periods may affect reliability. 2. Extended temperature operation guaranteed with 400 linear feet per minute of air flow. 3. Transient inputs with V IL and IIL not more negative than –3.0V and TIMING WAVEFORM OF READ CYCLE NO. 2(6) TIMING WAVEFORM OF READ CYCLE AC CHARACTERISTICS—READ CYCLE (V CC = 5V ± 10%, All Temperature Ranges) (2) –100mA, respectively, are permissible for pulse widths up to 20ns. 4. This parameter is sampled and not 100% tested. 5. CE is LOW and WE is HIGH for READ cycle. 6. WE is HIGH, and address must be valid prior to or coincident with CE transition LOW. 7. Transition is measured ±200mV from steady state voltage prior to change with specified loading in Figure 1. This parameter is sampled and not 100% tested. 8. Read Cycle Time is measured from the last valid address to the first transitioning address. Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max tRC Read Cycle Time 10 12 15 20 25 35 45 55 tAA Address Access Time 10 12 15 20 25 35 45 55 tAC Chip Enable Access Time (P4C148) 10 12 15 20 25 35 45 55 tAC Chip Enable Access Time (P4C149) 8 10 12 14 15 20 20 25 tOH Output Hold from Address Change 33333 333 tLZ Chip Enable to Output in Low Z (P4C149) 22222 222 tHZ Chip Disable to Output in High Z (P4C149) 4568 10 14 18 20 tRCS Read Command Setup Time 00000 000 tRCH Read Command Hold Time 00000 000 tPU Chip Enable to Power Up Time (P4C148) 00000 000 tPD Chip Disable to Power Down Time (P4C148) 10 12 15 20 25 35 45 55 -45 -55 -15 -20 -25 -35 Sym Parameter -10 -12 |
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