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CAT25320LIT3 Fiches technique(PDF) 8 Page - Catalyst Semiconductor |
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CAT25320LIT3 Fiches technique(HTML) 8 Page - Catalyst Semiconductor |
8 / 16 page CAT25320 Doc. No. 1111 Rev. E 8 © 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice Write Status Register The Status Register is written by sending a WRSR instruction according to timing shown in Figure 6. Only bits 2, 3 and 7 can be written using the WRSR command. Write Protection The Write Protect (WP ¯¯¯) pin can be used to protect the Block Protect bits BP0 and BP1 against being inadvertently altered. When WP ¯¯¯ is low and the WPEN bit is set to “1”, write operations to the Status Register are inhibited. WP ¯¯¯ going low while CS ¯¯ is still low will interrupt a write to the status register. If the internal write cycle has already been initiated, WP ¯¯¯ going low will have no effect on any write operation to the Status Register. The WP ¯¯¯ pin function is blocked when the WPEN bit is set to “0”. The WP ¯¯¯ input timing is shown in Figure 7. Figure 6. WRSR Timing Note: Dashed Line = mode (1, 1) - - - - - - Figure 7. WP ¯¯¯ Timing Note: Dashed Line = mode (1, 1) - - - - - - 01 2 3 4 5 6 78 10 911 12 13 14 SCK SI MSB HIGH IMPEDANCE DATA IN 15 SO CS 7 6 5 4 3 2 10 00 0 0 0 0 0 1 OPCODE CS SCK WP WP t WPS t WPH |
Numéro de pièce similaire - CAT25320LIT3 |
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Description similaire - CAT25320LIT3 |
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