AT24C256B_07 Datasheet, PDF (5/21 Pages) ATMEL Corporation – Two-wire Serial EEPROM 256K (32,768 x 8)

AT24C256B
Table 3. AC Characteristics (Industrial Temperature)
Applicable over recommended operating range from T_AI = −40°C to +85°C, V_CC = +1.8V to +3.6V, CL = 100 pF (unless oth-
erwise noted). Test conditions are listed in Note 2.
1.8-volt
2.5, 3.6-volt
Symbol
Parameter
Min
Max
Min
Max
Units
f_SCL
t_LOW
t_HIGH
t_i
t_AA
t_BUF
Clock Frequency, SCL
400
1000
kHz
Clock Pulse Width Low
1.3
0.4
µs
Clock Pulse Width High
0.6
0.4
µs
Noise Suppression Time⁽¹⁾
100
50
ns
Clock Low to Data Out Valid
0.05
0.9
0.05
0.55
µs
Time the bus must be free before a
new transmission can start⁽¹⁾
1.3
0.5
µs
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⁾
Start Hold Time
Start Set-up Time
Data In Hold Time
Data In Set-up Time
Inputs Rise Time⁽¹⁾
Inputs Fall Time⁽¹⁾
Stop Set-up Time
Data Out Hold Time
Write Cycle Time
25°C, Page Mode, 3.3V
0.6
0.25
µs
0.6
0.25
µs
0
0
µs
100
100
ns
0.3
0.3
µs
300
100
ns
0.6
0.25
µs
50
50
ns
5
5
ms
1,000,000
Write
Cycles
Notes:
1. This parameter is ensured by characterization and is not 100% tested.
2. AC measurement conditions:
R_L (connects to V_CC): 1.3 kΩ (2.5V, 3.6V), 10 kΩ (1.8V)
Input pulse voltages: 0.3 V_CC to 0.7 V_CC
Input rise and fall times: ≤ 50 ns
Input and output timing reference voltages: 0.5 V_CC
5
5080B–SEEPR–1/07