S-24CS64A Datasheet, PDF (9/44 Pages) Seiko Instruments Inc – 2-WIRE CMOS SERIAL E2PROM

Rev.3.3_00
2-WIRE CMOS SERIAL E²PROM
S-24CS64A
„ Pin Functions
1. Address Input Pins (A0, A1 and A2)
The slave address is assigned by connecting pins A0, A1 and A2 to the GND or to the V_CC respectively.
One of the eight different slave address can be assigned by the combination of pins A0, A1 and A2.
The given slave address, which is compared with the slave address transmitted from the master device, is
used to select the one among the multiple devices connected to the bus. The address input pin should be
connected to the GND or to the V_CC.
2. SDA (Serial Data Input / Output) Pin
The SDA pin is used for bi-directional transmission of serial data. It consists of a signal input pin and an
Nch open-drain output pin.
The SDA line is usually pulled up to the V_CC, and OR-wired with other open-drain or open-collector output
devices.
3. SCL (Serial Clock Input) Pin
The SCL pin is used for serial clock input. Since signals are processed at the rising or falling edge of the
SCL clock input signal, attention should be paid to the rising time and falling time to conform to the
specifications.
4. WP Pin
The write protection is enabled by connecting the WP pin to the V_CC. When there is no need for write
protection, connect the pin to the GND.
Seiko Instruments Inc.
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