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CAT25C01VI-1.8TE13 Fiches technique(PDF) 9 Page - Catalyst Semiconductor |
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CAT25C01VI-1.8TE13 Fiches technique(HTML) 9 Page - Catalyst Semiconductor |
9 / 15 page Discontinued Parts 9 CAT25C01, CAT25C02, CAT25C04 Doc. No. 1105, Rev. B © 2005 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice Figure 9. HOLD HOLD HOLD HOLD HOLD Timing Figure 8. Page Write Instruction Timing Note: Dashed Line= mode (1, 1) – –––– *X=0 for CAT25C01, CAT25C02; X=A8 for CAT25C04 Note: Dashed Line= mode (1, 1) – –––– CS SCK HOLD SO tCD tHD tHD tCD tLZ tHZ HIGH IMPEDANCE SK SI SO 00 00 00 10 BYTE ADDRESS Data Byte 1 012345678 13 14 15 16-23 24-31 Data Byte 2 Data Byte 3 Data Byte N CS OPCODE 7..1 0 16+(N-1)x8-1..16+(N-1)x8 16+Nx8-1 DATA IN HIGH IMPEDANCE A7 A0 X* Figure 10. WP WP WP WP WP Timing CS SCK WP WP tWPS tWPH Note: Dashed Line= mode (1, 1) – –––– DESIGN CONSIDERATIONS The CAT25C01/02/04 powers up in a write disable state and in a low power standby mode. A WREN instruction must be issued to perform any writes to the device after power up. Also,on power up CS should be brought low to enter a ready state and receive an instruction. After a successful byte/page write or status register write, the CAT25C01/02/04 goes into a write disable mode. CS must be set high after the proper number of clock cycles to start an internal write cycle. Access to the array during an internal write cycle is ignored and program- ming is continued. On power up, SO is in a high impedance. If an invalid op code is received, no data will be shifted into the CAT25C01/02/04, and the serial output pin (SO) will remain in a high impedance state until the falling edge of CS is detected again. When powering down, the supply should be taken down to 0V, so that the CAT25C01/02/04 will be reset when power is ramped back up. If this is not possible, then, following a brown-out episode, the CAT25C01/02/04 can be reset by refreshing the contents of the Status Register (See Application Note AN10). |
Numéro de pièce similaire - CAT25C01VI-1.8TE13 |
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Description similaire - CAT25C01VI-1.8TE13 |
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