ACE24LC02/04/08/16
Two-wire Serial EEPROM
Ordering information
ACE24LC02/04/08/16 XX
+
X H
Halogen-free
U : Tube
T : Tape and Reel
Pb - free
DP : DIP-8
FM : SOP-8
TM : TSSOP-8
BN : SOT-23-5
DM : TDFN-8
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 bi-directional 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 (A2, A1, A0):
The A2, A1 and A0 pins are device address inputs that are hard wired for the ACE24LC02, As many as
eight 2K devices may be addressed on a single bus system (device addressing is discussed in detail
under the Device Addressing section).
The ACE24LC04 uses the A2 and A1 inputs for hard wire addressing and a total of four 4K devices
may be addressed on a single bus system. The A0 pins are no connects.
The ACE24LC08 only uses A2 input for hardwire addressing and a total of two 8K devices may be
addressed on a single bus system. The A0 and A1 pins are no connects.
The ACE24LC16 does not use the device address pins, which limits the number of devices on a
single bus to one. The A0, A1 and A2 pins are no connects.
Write Protect (WP):
The ACE24LC02/04/08/16 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
conceded to Vcc the write protection feature is enabled.
Write Protect Description
Part of the Array Protected
WP Pin Status
ACE24LC02
ACE24LC04
ACE24LC08
ACE24LC16
Full (8K) Array Full (16K) Array
WP=VCC
Full (2K) Array Full (4K) Array
Normal Read / Write Operations
WP=GND
VER 1.6
4
ACE [ ACE TECHNOLOGY CO., LTD. ]
