X24C02 Datasheet, PDF (11/16 Pages) Xicor Inc. – Serial E2PROM

X24C02
WRITE CYCLE LIMITS
Symbol
Parameter
Min.
Typ.⁽⁵⁾
Max.
Units
t_WR(6)
Write Cycle Time
5
10
ms
3838 PGM T08
The write cycle time is the time from a valid stop condition of a write sequence to the end of the internal erase/program cycle.
During the write cycle, the X24C02 bus interface circuits are disabled, SDA is allowed to remain high, and the device does not
respond to its slave address.
Write Cycle Timing
SCL
SDA
8th BIT
WORD n
ACK
STOP
CONDITION
t
WR
START
CONDITION
X24C02
ADDRESS
3838 FHD F05
Notes: (5)Typical values are for TA = 25 C and nominal supply voltage (5V)
(6) tWR is the minimum cycle time from the system perspective when polling techniques are not used. It is the maximum time the
device requires to perform the internal write operation.
Guidelines for Calculating Typical Values of
Bus Pull-Up Resistors
120
100
80
60
40
V
R
MIN
= ^{CC MAX}
I
OL MIN
t
R
MAX
=^R
C
BUS
MAX.
RESISTANCE
=1.8KΟ
20 _MIN.
RESISTANCE
0
0 20 40 60
80100120
BUS CAPACITANCE (pF)
3838 FHD F17
SYMBOL TABLE
WAVEFORM
INPUTS
Must be
steady
May change
from Low to
High
May change
from High to
Low
Don’t Care:
Changes
Allowed
N/A
OUTPUTS
Will be
steady
Will change
from Low to
High
Will change
from High to
Low
Changing:
State Not
Known
Center Line
is High
Impedance
11