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M29F400T-90N3R Datasheet(PDF) 13 Page - STMicroelectronics |
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M29F400T-90N3R Datasheet(HTML) 13 Page - STMicroelectronics |
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13 / 34 page  AI01275B 3V High Speed 0V 1.5V 2.4V Standard 0.45V 2.0V 0.8V Figure 4. AC Testing Input Output Waveform AI01276B 1.3V OUT CL CL = 30pF for High Speed CL = 100pF for Standard CL includes JIG capacitance 3.3k Ω 1N914 DEVICE UNDER TEST Figure 5. AC Testing Load Circuit Symbol Parameter Test Condition Min Max Unit CIN Input Capacitance VIN =0V 6 pF COUT Output Capacitance VOUT =0V 12 pF Note: 1. Sampled only, not 100% tested. Table 12. Capacitance (1) (TA =25 °C, f = 1 MHz ) Block Erase (BE) Instruction. This instruction uses a minimum of six write cycles. The Erase Set-up command 80h is written to address AAAAh in the Byte-wide configuration or address 5555h in the Word-wide configuration on third cycle after the two Coded cycles. The Block Erase Confirm com- mand 30h is similarly written on the sixth cycle after another two Coded cycles. During the input of the second command an address within the block to be erased is given and latched into the memory. Addi- tional block Erase Confirm commands and block addresses can be written subsequently to erase other blocks in parallel, without further Coded cy- cles. The erase will start after the erase timeout period (see Erase Timer Bit DQ3 description). Thus, additional Erase Confirm commands for other blocks must be given within this delay. The input of a new Erase Confirm command will restart the timeout period. The status of the internal timer can be monitored through the level of DQ3, if DQ3 is ’0’ the Block Erase Command has been given and the timeout is running, if DQ3 is ’1’, the timeout has expired and the P/E.C. is erasing the Block(s). If the second command given is not an erase confirm or if the Coded cycles are wrong, the instruction aborts, and the device is reset to Read Array. It is not necessary to program the block with 00h as the P/E.C. will do this automatically before to erasing to FFh. Read operations after the sixth rising edge of W or E output the status register status bits. High Speed Standard Input Rise and Fall Times ≤ 10ns ≤ 10ns Input Pulse Voltages 0 to 3V 0.45V to 2.4V Input and Output Timing Ref. Voltages 1.5V 0.8V and 2V Table 11. AC Measurement Conditions 13/34 M29F400T, M29F400B |
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