3
AT24C16C [DATASHEET]
Atmel-8719D-SEEPROM-AT24C16C-Datasheet_122016
3.
Block Diagram
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
Start
Stop
Logic
Data Word
ADDR/Counter
Row Decoder
Device
Address
Comparator
Data Latches
D
OUT
/ ACK
Logic
Column
Decoder
EEPROM
Array
Serial
Control
Logic
High Voltage
Pump & Timing
Serial MUX
Read/Write
Enable
COMP
Load
INC
V
CC
GND
WP
SCL
SDA
D
OUT
D
IN
A
2
A
1
WP Pin Status
Part of the Array Protected
At V
CC
Full Array
At GND
Normal Read/Write Operations
