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S-24C01AFJA-TB11-S Datasheet(PDF) 6 Page - Seiko Instruments Inc |
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S-24C01AFJA-TB11-S Datasheet(HTML) 6 Page - Seiko Instruments Inc |
6 / 23 page CMOS 2-WIRED SERIAL EEPROM S-24C01A/02A/04A Rev. 2.2_30 6 Seiko Instruments Inc. Table 10 VCC=4.5 to 5.5V VCC=2.5 to 4.5V Item Symbol Min. Typ. Max. Min. Typ. Max. Unit Write time tWR — 0.8 1.0 — 4.0 5.0 ms Pin Functions 1. Address Input Pins (A0, A1, and A2) Connect pins A0, A1, and A2 to the GND or the V CC, respectively, to assign slave addresses. There are 8 different ways to assign slave addresses in the S-24C01A and S-24C02A through a combination of pins A0, A1, and A2, and 4 ways to assign them in the S-24C04A through a combination of pins A1 and A2. When the input slave address coincides with the slave address transmitted from the master device, 1 device can be selected from among multiple devices connected to the bus. Always connect the address input pin to GND or V CC and leave it unchanged. 2. SDA (Serial Data Input/Output) Pin The SDA pin is used for bilateral transmission of serial data. It consists of a signal input pin and an Nch open-drain transistor output pin. Usually pull up the SDA line via resistance to the V CC, and use it with other open-drain or open-collector output devices connected in a wired OR configuration. 3. SCL (Serial Clock Input) Pin The SCL pin is used for serial clock input. It is capable of processing signals at the rising and falling edges of the SCL clock input signal. Make sure the rising time and falling time conform to the specifications. 4. TEST/WP Pin The S-24C01A does not have a write protection (WP) function. The pin serves as a TEST pin and shoud always be connect to the GND. In the S-24C02A and S-24C04A, this pin is used for write protection. When there is no need for write protection, connect the pin to the GND; when there is a need for write protection, connect the pin to the Vcc. Figure 5 Write Cycle SCL SDA D0 Write data Acknowledge Stop condition Start condition tWR |
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