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M295V040-150K5TR Datasheet(PDF) 9 Page - STMicroelectronics |
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M295V040-150K5TR Datasheet(HTML) 9 Page - STMicroelectronics |
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9 / 31 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 10. Capacitance (1) (TA = 25 °C, f = 1 MHz ) Erase Timer bit (DQ3). This bit is set to ’0’ by the P/E.C. when the last Block Erase command has been entered to the Command Interface and it is awaiting the Erase start. When the wait period is finished, after 80 to 120 µs, DQ3 returns back to ’1’. Coded Cycles. The two coded cycles unlock the Command Interface. They are followed by a com- mand input or a comand confirmation. The coded cycles consist of writing the data AAh at address 5555h during the first cycle and data 55h at address 2AAAh during the second cycle. Addresses are latched on the falling edge of W or E while data is latched on the rising edge of W or E. The coded cycles happen on first and second cycles of the command write or on the fourth and fifth cycles. Read Array/Reset (RST) instruction. The Reset instruction consists of one write operation giving the command F0h. It can be optionally preceded by the two coded cycles. A wait state of 5 µs before read operations is necessary if the Reset command is applied during an Erase operation. Read Electronic Signature (RSIG) instruction. This instruction uses the two coded cycles followed by one write cycle giving the command 90h to address 5555h for command setup. A subsequent read will output the manufacturer code, the device code or the Block Protection status depending on the levels of A0, A1, A6, A16, A17 and A18. The manufacturer code, 20h, is output when the ad- dresses lines A0, A1 and A6 are Low, the device code, E2h is output when A0 is High with A1 and A6 Low. 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 9. AC Measurement Conditions 9/31 M29F040 |
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