ACE24C1024
Two-wire Serial EEPROM
AC Characteristics
Applicable over recommended operating range from: TA = -40℃ to +85℃, VCC = +1.7V to +5.5V, CL = 100 pF (unless otherwise
noted). Test conditions are listed in Note2.
1.7-volt
2.5-volt 5.5-volt
Symbol
Parameter
Units
Min Max Min Max Min Max
fSCL
TLOW
THIGH
Ti1
Clock Frequency, SCL
Clock Pulse Width Low
Clock Pulse Width High
Noise Suppression Time
Clock Low to Data Out Valid
Time the bus must be free before a new
transmission can Start
Start Hold Time
400
100
1000
1000 kHz
1300
600
400
400
400
400
ns
ns
50
50
TAA
20 900 20 550 20 550
ns
1
TBUF
1300
500
500
ns
THD.STA
TSU.STA
THD.DAT
TSU.DAT
TR
600
600
0
250
250
0
250
250
0
ns
ns
Start Setup Time
Data In Hold Time
ns
Data In Setup Time
100
100
100
ns
Inputs Rise Time
300
300
300
100
300
100
ns
TF
Inputs Fall Time
ns
TSU.STO
TDH
Stop Setup Time
600
50
250
50
250
50
ns
Data Out Hold Time
Write Cycle Time
ns
TWR
5
5
5
ms
Write
Cycles
Endurance1
3.3V, 25℃, Page Mode
1,000,000
Notes:1. This parameter is characterized and not 100% tested.
2.AC measurement conditions:
RL (connects to Vcc): 1.3KΩ
Input pulse voltages: 0.3 Vcc to 0.7 Vcc
Input rise and fall times: ≦50 ns
Input and output timing reference voltages: 0.5Vcc
Device Operation
Clock and Data Transitions:
The SDA pin is normally pulled high with an external device. Data on the SDA pin may change only
during SCL low time periods (refer to Figure 4). Data changes during SCL high periods will indicate a
start or stop condition as defined below.
Start Condition:
A high-to-low transition of SDA with SCL high is a start condition which must precede any other
command (refer to Figure 5).
VER 1.4
5
ACE [ ACE TECHNOLOGY CO., LTD. ]
