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M27C801-100K1 数据表(PDF) 10 Page - STMicroelectronics |
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M27C801-100K1 数据表(HTML) 10 Page - STMicroelectronics |
10 / 24 page Device description M27C801 10/24 Figure 4. Programming flowchart 2.7 Program Inhibit Programming of multiple M27C801s in parallel with different data is also easily accomplished. Except for E, all like inputs including GVPP of the parallel M27C801 may be common. A TTL low level pulse applied to a M27C801's E input, with VPP at 12.75V, will program that M27C801. A high level E input inhibits the other M27C801s from being programmed. 2.8 Program Verify A Verify (Read) should be performed on the programmed bits to determine that they were correctly programmed. The Verify is accomplished with G at VIL. Data should be verified with tELQV after the falling edge of E. 2.9 Electronic Signature The Electronic Signature (ES) mode allows the reading out of a binary code from an EPROM that will identify its manufacturer and type. This mode is intended for use by programming equipment to automatically match the device to be programmed with its corresponding programming algorithm. The ES mode is functional in the 25°C ± 5°C ambient temperature range that is required when programming the M27C801. To activate AI01271B n = 0 Last Addr VERIFY E = 50 µs Pulse ++n = 25 ++ Addr VCC = 6.25V, VPP = 12.75V FAIL CHECK ALL BYTES 1st: VCC = 6V 2nd: VCC = 4.2V YES NO YES NO YES NO SET MARGIN MODE RESET MARGIN MODE |
类似零件编号 - M27C801-100K1 |
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类似说明 - M27C801-100K1 |
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