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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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SH7041A 데이터시트(PDF) 773 Page - Renesas Technology Corp |
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SH7041A 데이터시트(HTML) 773 Page - Renesas Technology Corp |
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773 / 923 page  735 22.11.5 Auto-Erase Mode 1. Auto-erase mode supports only entire memory erasing. 2. Do not perform a command write during auto-erasing.. 3. Confirm normal end of auto-erasing by checking I/O6. Alternatively, status read mode can also be used for this purpose (I/O7 status output uses the auto-erase operation end identification pin). 4. Status polling I/O6 and I/O7 pin information is retained until the next command write. As long as the next command write has not been performed, reading is possible by enabling CE and OE. Table 22.17 AC Characteristics in Auto-Erase Mode (Conditions: V CC = 5.0 V ±10%, V SS = 0 V, Ta = 25°C ±5°C) Item Symbol Min Max Unit Notes Command write cycle t nxtc 20 µs CE hold time t ceh 0ns CE setup time t ces 0ns Data hold time t dh 50 ns Data setup time t ds 50 ns Write pulse width t wep 70 ns Status polling start time t ests 1ms Status polling access time t spa 150 ns Memory erase time t erase 100 40000 ms Erase setup time t ens 100 ns Erase end setup time t enh 100 ns WE rise time t r 30 ns WE fall time t f 30 ns |
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