AT24CS16_14 Datasheet, PDF (4/22 Pages) ATMEL Corporation – Factory Programmed 128-bit Serial Number

5. Pin Description
Serial Clock (SCL): The SCL input is used to positive edge clock data into each EEPROM device and negative edge
clock data out of each device.
Serial Data (SDA): The SDA pin is bidirectional for serial data transfer. This pin is open-drain driven and may be
wire-ORed with any number of other open-drain or open-collector devices.
Device/Page Addresses: The AT24CS16 does not utilize device address pins, which limits the number of devices on a
single bus to one.
Write Protect (WP): AT24CS16 has a Write Protect (WP) pin that provides hardware data protection. When the Write
Protect pin is connected to ground (GND), normal Read/Write operations to the full array are possible. When the Write
Protect pin is connected to V_CC, all Write operations to the memory are inhibited but Read operations are still possible.
This operation is summarized in Table 5-1 below.
Table 5-1. Write Protect
WP Pin
Status
At V_CC
At GND
Part of the Array Protected
AT24CS16
Full Array
Normal Read/Write Operations
Atmel AT24CS16 [PRELIMINARY DATASHEET]
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Atmel-8859A-SEEPROM-AT24CS16-Datasheet-022013