M24128-BFMC6TG Datasheet, PDF (29/40 Pages) STMicroelectronics – 128-Kbit serial I²C bus EEPROM

M24128-BW M24128-BR M24128-BF M24128-DF
DC and AC parameters
Table 17. 400 kHz AC characteristics
Symbol
Alt.
Parameter
Min.
Max. Unit
f_C
f_SCL Clock frequency
-
400
kHz
t_CHCL
t_HIGH Clock pulse width high
600
-
ns
t_CLCH
t_QL1QL2(1)
t_XH1XH2
t_XL1XL2
t_LOW
t_F
t_R
t_F
Clock pulse width low
SDA (out) fall time
Input signal rise time
Input signal fall time
1300
-
ns
20⁽²⁾
300
ns
(3)
(3)
ns
(3)
(3)
ns
t_DXCH
t_SU:DAT Data in set up time
100
-
ns
t_CLDX
t_CLQX(4)
t_CLQV(6)
t_HD:DAT
t_DH
t_AA
Data in hold time
Data out hold time
Clock low to next data valid (access time)
0
-
ns
100⁽⁵⁾
-
ns
-
900
ns
t_CHDL
t_SU:STA Start condition setup time
600
-
ns
t_DLCL
t_HD:STA Start condition hold time
600
-
ns
t_CHDH t_SU:STO Stop condition set up time
600
-
ns
t_DHDL
t_BUF
Time between Stop condition and next Start
condition
1300
-
ns
t_WLDL(7)(1) t_SU:WC WC set up time (before the Start condition)
0
t_DHWH(8)(1) t_HD:WC WC hold time (after the Stop condition)
1
-
µs
-
µs
t_W
t_WR Internal Write cycle duration
-
5
ms
t_NS(1)
Pulse width ignored (input filter on SCL and
SDA) - single glitch
-
80⁽⁹⁾
ns
1. Characterized only, not tested in production.
2. With C_L = 10 pF.
3. There is no min. or max. values for the input signal rise and fall times. It is however
recommended by the I²C specification that the input signal rise and fall times be more than
20 ns and less than 300 ns when f_C < 400 kHz.
4. To avoid spurious Start and Stop conditions, a minimum delay is placed between SCL=1 and
the falling or rising edge of SDA.
5. 200 ns for previous devices identified by process letter A.
6.
F^0tC.i³g^LQVu^Vr^Ce^Cis1^o2^thr.^{e0.t7imVCeC(,fraosmsuthmeinfaglltihnagt}
edge
R_bus
of SCL) required by the SDA
× C_bus time constant is within
bus
the
line to
values
reach either
specified in
7. WC=0 set up time condition to enable the execution of a WRITE command.
8. WC=0 hold time condition to enable the execution of a WRITE command.
9. 100 ns for previous devices identified by process letter A.
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