ACE24C02 Datasheet, PDF (4/20 Pages) ACE Technology Co., LTD. – Two-wire Serial EEPROM

Ordering information
ACE24C02/04/08/16B XX + X H
ACE24C02/04/08/16B
Two-wire Serial EEPROM
Halogen-free
U : Tube
T : Tape and Reel
Pb - free
DP : DIP-8
FM : SOP-8
TM : TSSOP-8
OM : MSOP-8
DM : TDFN
BM : SOT-23-5
Device/Page Addresses (A2, A1 and A0):
The A2, A1 and A0 pins are device address inputs that are hard wired for the ACE24C02B. Eight 2K
devices may be addressed on a single bus system (device addressing is discussed in detail under the
Device Addressing section).
The ACE24C04B 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 pin is a no connect and can be connected to ground.
The ACE24C08B only uses the 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 and can be connected to
ground.
The ACE24C16B 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 and can be connected to ground.
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.
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.
Write Protect (WP):
The ACE24C02B/ACE24C04B/ACE24C08B/ACE24C16B 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 VCC, the write protection feature is enabled
and operates as shown in the following.
VER 1.3 4