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NV25M01 Arkusz danych(PDF) 10 Page - ON Semiconductor |
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NV25M01 Arkusz danych(HTML) 10 Page - ON Semiconductor |
10 / 15 page NV25M01 www.onsemi.com 10 Hold Operation The HOLD input can be used to pause communication between host and NV25M01. To pause, HOLD must be taken low while SCK is low (Figure 11). During the hold condition the device must remain selected (CS low). During the pause, the data output pin (SO) is tri−stated (high impedance) and SI transitions are ignored. To resume communication, HOLD must be taken high while SCK is low. Design Considerations The NV25M01 device incorporates Power−On Reset (POR) circuitry which protects the internal logic against powering up in the wrong state. The device will power up into Standby mode after VCC exceeds the POR trigger level and will power down into Reset mode when VCC drops below the POR trigger level. This bi−directional POR behavior protects the device against ‘brown−out’ failure following a temporary loss of power. The NV25M01 device powers up in a write disable state and in a low power standby mode. A WREN instruction must be issued prior any writes to the device. After power up, the CS pin must be brought low to enter a ready state and receive an instruction. After a successful byte/page write or status register write, the device goes into a write disable mode. The CS input must be set high after the proper number of clock cycles to start the internal write cycle. Access to the memory array during an internal write cycle is ignored and programming is continued. Any invalid op−code will be ignored and the serial output pin (SO) will remain in the high impedance state. SCK SO HIGH IMPEDANCE Figure 11. HOLD Timing tLZ HOLD CS tCD tHD tHD tCD tHZ Note: Dashed Line = mode (1, 1) ORDERING INFORMATION Device Order Number Specific Device Marking Package Type Temperature Range Lead Finish Shipping† NV25M01DWUTG W25M1A SOIC−8 (Pb−Free) (−40°C to +105°C) NiPdAu 3,000 Units / Tape & Reel NV25M01DTUTG TM1A TSSOP−8 (Pb−Free) (−40°C to +105°C) NiPdAu 3,000 Units / Tape & Reel †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. 10.For additional package and temperature options, please contact your nearest ON Semiconductor Sales office. |
Podobny numer części - NV25M01_18 |
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Podobny opis - NV25M01_18 |
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