AT24C16C_14 Datasheet, PDF (3/23 Pages) ATMEL Corporation – IC-Compatible, (2-Wire) Serial EEPROM

3. Block Diagram
V_CC
GND
WP
SCL
SDA
Start
Stop
Logic
Serial
Control
Logic
Enable
Device
Address
Comparator
COMP
Load
INC
Data Word
A₂
Read/Write
ADDR/Counter
A₁
High Voltage
Pump & Timing
Data Latches
EEPROM
Array
D_OUT
Column
Decoder
Serial MUX
D_OUT / ACK
Logic
D_IN
4. 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 AT24C16C does not use the device address pins, which limits the number of devices on
a single bus to one (see Section 7. “Device Addressing” on page 9).
Write Protect (WP): AT24C16C has a Write Protect pin that provides hardware data protection. The Write Protect pin
allows normal Read/Write operations when connected to Ground (GND). When the Write Protect pin is connected to V_CC,
the Write Protection feature is enabled and operates as shown in Table 4-1.
Table 4-1. Write Protect
WP Pin Status
At V_CC
At GND
Part of the Array Protected
AT24C16C
Full Array
Normal Read/Write Operations
Atmel AT24C16C [DATASHEET]
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Atmel-8719B-SEEPROM-AT24C16C-Datasheet_042013