ACE24C02A Datasheet PDF - ACE Technology


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ACE24C02A
ACE Technology

Part Number ACE24C02A
Description Two-wire Serial EEPROM
Page 14 Pages

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ACE24C02A                                                                                                                                                                 
                                              Technology
Two-wire Serial EEPROM
Description
The ACE24C02A provides low operation voltage of 2048 bits of serial electrically erasable and programmable
read-only memory (EEPROM) organized as 256 words of 8 bits each. The device is optimized for use in many
industrial and commercial applications where low-power and low-voltage operations are essential.
Features
z Low Operation Voltage: Vcc=1.7V to 5.5V
z 5V tolerant I/O
z Internally Organized: 256x8
z Two-wire Serial Interface
z Schmitt Trigger, Filtered Inputs for Noise Suppression
z Bi-directional Data Transfer Protocol
z 1MHz(2.5V~5.5V) and 400kHz(1.7V) Compatibility
z Write Protect Pin for Hardware Data Protection
z 8-byte Page Write Modes
z Partial Page Writes are Allowed
z Self-timed Write Cycle (5 ms max)
z High-reliability - Endurance: 1,000,000 Write Cycles
- Data Retention: 100 Years
Absolute Maximum Ratings
Operating Temperature
-55to +125
Storage Temperature
-65to +150
Voltage on Any Pin with Respect to Ground -1.0V to +7.0V
Maximum Operating Voltage
6.25V
DC Output Current
5.0 mA
*Notice: Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational
sections of this specification are not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
VER 1.2 1 



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ACE24C02A                                                                                                                                                                 
                                              Technology
Two-wire Serial EEPROM
Packaging Type
Pin Configurations
Pin Name
Function
A0~A2 Device Address Inputs
SDA Serial Data Input / Output
SCL
Serial Clock Input
WP Write Protect
VCC
Power Supply
GND
Ground
Block Diagram
Figure 1
VER 1.2 2



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ACE24C02A                                                                                                                                                                 
                                              Technology
Two-wire Serial EEPROM
Ordering Information
Selection Guide
ACE24C02A XX + X H
Halogen - free
U : Tube
T : Tape and Reel
Pb - free
DP : PDIP-8
FM : SOP-8
TM : TSSOP-8
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 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.
Write Protect (WP):
The ACE24C02A 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=VCC
WP=GND
Part of the Array Protected
Full (2K) Array
Normal Read / Write Operations
Memory Organization
ACE24C02A, 2K SERIAL EEPROM:
Internally organized with 32 pages of 8 bytes each, the 2K requires an 8-bit data word address
for random word addressing.
VER 1.2 3



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ACE24C02A                                                                                                                                                                 
                                              Technology
Two-wire Serial EEPROM
Pin Capacitance
Applicable over recommended operating range from: TA = 25, f = 1.0 MHz, VCC = +2.2V.
Symbol
Test Condition
Max
CI/
1
O
CIN1
Input / Output Capacitance (SDA)
Input Capacitance (A0, A1, A2, SCL)
8
6
Note: This parameter is characterized and is not 100% tested.
Units
pF
pF
Conditions
VI/O = 0V
VIN = 0V
DC Characteristics
Applicable over recommended operating range from: TA = -40to +85, (unless otherwise noted).
Symbol
Parameter
Test Condition
Min Typ Max Units
VCC Supply Voltage
1.7 5.5 V
ICC1 Supply Current
VCC = 5.5V, Read at 400K
0.4 1.0 mA
ICC2 Supply Current
VCC = 5.5V, Write at 400K
2.0 3.0 mA
ISB1 Standby Current
VCC = 1.7V, VIN = VCC/ VSS
3 6.0 µA
ISB2 Standby Current
VCC = 5.5V, VIN = VCC/ VSS
8 18.0 µA
ILI Input Leakage Current
VIN = VCC/VSS
0.10 3.0 µA
ILO
Output Leakage Current
VOUT = VCC/ VSS
VIL1 Input Low Level
VIH1 Input High Level
VOL2
Output Low Level
VCC = 3.0V, IOL = 2.1 mA
VOL1
Output Low Level
VCC = 1.7V, IOL = 0.15 mA
Note: 1. VIL min and VIH max are reference only and are not tested.
-0.6
VCCx0.7
0.05
3.0
VCCx0.3
5.5
0.4
0.2
µA
V
V
V
V
AC Characteristics
Applicable over recommended operating range from: TA = -40to +85, VCC = +1.7V to +5.5V, CL = 1 TTL Gate and 100
pF (unless otherwise noted). Test conditions are listed in Note 2.
Symbol
Parameter
1.7-volt 2.5-volt 5.5-volt
Units
Min Max Min Max Min Max
fSCL
TLOW
THIGH
TAA
TBUF1
Clock Frequency, SCL
Clock Pulse Width Low
Clock Pulse Width High
Clock Low to Data Out Valid
Time the bus must be free before a new
transmission can Start
400 1000 1000 kHz
1.3 0.4
0.4
µs
0.6 0.4
0.4
µs
0.1 0.9 0.05 0.55 0.05 0.55 µs
1.2 0.5
0.5
µs
THD.STA
TSU.STA
Start Hold Time
Start Setup Time
0.6 0.25 0.25
0.6 0.25 0.25
µs
µs
VER 1.2 4




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