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 di scussed 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
WP Pin Status
WP=V
CC
WP=GND
ACE24LC02
Part of the Array Protected
ACE24LC04
ACE24LC08
ACE24LC16
Full (2K) Array Full (4K) Array Full (8K) Array Full (16K) Array
Normal Read / Write Operations
VER 1.6
4
ACE [ ACE TECHNOLOGY CO., LTD. ]
