ACE24C02A
Two-wire Serial EEPROM
AC Characteristics
Applicable over recommended operating range from: T
A
= -40℃ to +85℃, V
CC
= +1.7V to +5.5V, CL = 100pF (unless
otherwise noted). Test conditions are listed in Note 2.
Symbol
f
SCL
T
LOW
T
HIGH
T
AA
T
BUF1
T
HD.STA
T
SU.STA
T
HD.DAT
T
SU.DAT
T
R
T
F
T
SU.STO
T
DH
T
WR
Endurance
(1)
Parameter
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
Start Hold Time
Start Setup Time
Data In Hold Time
Data In Setup Time
Inputs Rise Time
Inputs Fall Time
Stop Setup Time
Data Out Hold Time
Write Cycle Time
3.3V, 25℃, Page Mode
1.7-volt
2.5-volt
5.5-volt
Min Max Min Max Min Max
400
1.3
0.6
0.4
0.4
1000
0.4
0.4
1000
Units
kHz
µs
µs
µs
µs
µs
µs
µs
ns
0.05 0.9 0.05 0.55 0.05 0.55
1.2
0.6
0.6
0
100
0.3
300
0.6
50
5
0.25
50
5
1,000,000
0.5
0.25
0.25
0
100
0.3
100
0.25
50
5
0.5
0.25
0.25
0
100
0.3
100
µs
ns
µs
ns
ms
Write
Cycles
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. ]
