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ACE24C64DP+TH Datasheet(PDF) 7 Page - ACE Technology Co., LTD. |
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ACE24C64DP+TH Datasheet(HTML) 7 Page - ACE Technology Co., LTD. |
7 / 16 page ACE24C32/64 Technology Two-wire Serial EEPROM VER 1.3 7 Start Condition: A high-to-low transition of SDA with SCL high is a start condition which must precede any other command (refer to Figure 5). 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 (refer to Figure 5). Acknowledge: All addresses and data words are serially transmitted to and from the EEPROM in 8-bit words. The EEPROM sends a zero during the ninth clock cycle to acknowledge that it has received each word. Standby Mode : The ACE24C32/64 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 protocol reset by following these steps: 1. Clock up to 9 cycles. 2. Look for SDA high in each cycle while SCL is high and then. 3. Create a start condition as SDA is high. Bus Timing Figure 2.SCL: Serial Clock, SDA: Serial Data I/O |
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