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BL24C64 Datasheet(PDF) 4 Page - SHANGHAI BELLING CO., LTD. |
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BL24C64 Datasheet(HTML) 4 Page - SHANGHAI BELLING CO., LTD. |
4 / 13 page Shanghai Belling Corp., Ltd BL24C32/64 4 START CONDITION: A high-to-low transition of SDA with SCL high is a start condition which must precede any other command (see Figure 2 ). STOP CONDITION: A low-to-high transition of SDA with SCL high is a stop condition. After a read sequence, the stop command will place the EEPROM in a standby power mode (see Figure 2) ACKNOWLEDGE: All addresses and data words are serially transmitted to and from the EEPROM in 8-bit words. The EEPROM sends a “0” to acknowledge that it has received each word. This happens during the ninth clock cycle. STANDBY MODE: The 24C32/24C64 features a low-power standby mode which is enabled: (a) upon power-up and (b) after the receipt of the STOP bit and the completion of any internal operations MEMORY RESET: After an interruption in protocol, power loss or system reset, any two-wire part can be reset by following these steps: 1. Clock up to 9 cycles. 2. Look for SDA high in each cycle while SCL is high. 3. Create a start condition. Figure 1. Data Validity Figure 2. Start and Stop Definition |
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