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CAT1163JI-42TE13 Datasheet(PDF) 6 Page - Catalyst Semiconductor |
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CAT1163JI-42TE13 Datasheet(HTML) 6 Page - Catalyst Semiconductor |
6 / 12 page 6 CAT1163 Doc. No. 3003, Rev. C Any attempt to access the internal EEPROM is not recognized and an ACK will not be sent on the SDA line when RESET or RESET is active. Reset Threshold Voltage The CAT1163 is offered with five reset threshold voltage ranges. They are 4.50-4.75V, 4.25-4.50V, 3.00-3.15V, 2.85-3.00V and 2.55-2.70V. Hardware Data Protection The CAT1163 is designed with the following hardware data protection features to provide a high degree of data integrity. (1) The CAT1163 features a WP pin. When the WP pin is tied high the entire memory array becomes write protected (read only). (2) The VCC sense provides write protection when VCC falls below the reset threshold value (VTH). The VCC lock out inhibits writes to the serial EEPROM whenever VCC falls below (power down) VTH or until VCC reaches the reset threshold (power up) VTH. tHIGH SCL SDA IN SDA OUT tLOW tF tLOW tR tBUF tSU:STO tSU:DAT tHD:DAT tHD:STA tSU:STA tAA tDH Figure 2. Bus Timing tWR STOP CONDITION START CONDITION ADDRESS ACK 8TH BIT BYTE n SCL SDA Figure 3. Write Cycle Timing START BIT SDA STOP BIT SCL Figure 4. Start/Stop Timing |
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