When writing data to the memory, it responds to the
8 bits received by asserting an acknowledge bit
during the 9th bit time. When data is read by the
bus master, it acknowledges the receipt of the data
bytes in the same way. Data transfers are termi-
nated with a STOP condition.
Power On Reset: V
CC
lock out write protect.
In
order to prevent data corruption and inadvertent
write operations during power up, a Power On
Reset (POR) circuit is implemented. Until the V
CC
voltage has reached the POR threshold value, the
internal reset is active, all operations are disabled
and the device will not respond to any command.
In the same way, when V
CC
drops down from the
operating voltage to below the POR threshold
value, all operations are disabled and the device
will not respond to any command. A stable V
CC
must be applied before applying any logic signal.
SDA
VSS
SCL
WC
NC
NC
NC
VCC
AI01322
M2201
1
2
3
4
8
7
6
5
Figure 2A. DIP Pin Connections
1
2
3
4
AI01323
8
7
6
5
SDA
VSS
SCL
WC
NC
NC
NC
VCC
M2201
Figure 2B. SO and TSSOP Pin Connections
DESCRIPTION
(cont’d)
Symbol
Parameter
Value
Unit
T
A
Ambient Operating Temperature
–40 to 85
°
C
T
STG
Storage Temperature
–65 to 150
°
C
T
LEAD
Lead Temperature, Soldering
(SO8 package)
(PSDIP8 package)
(TSSOP8 package)
40 sec
10 sec
t.b.c.
215
260
t.b.c.
°
C
V
O
Output Voltage
–0.6 to 6.5
V
V
I
Input Voltage
–0.6 to 6.5
V
V
CC
Supply Voltage
–0.3 to 6.5
V
V
ESD
Electrostatic Discharge Voltage (Human Body model)
(2)
4000
V
Electrostatic Discharge Voltage (Machine model)
(3)
500
V
Notes:
1. Except for the rating "Operating Temperature Range", stresses above those listed in the Table "Absolute Maximum Ratings"
may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other
conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum
Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other
relevant quality documents.
2. MIL-STD-883C, 3015.7 (100pF, 1500
).
3. EIAJ IC-121 (Condition C) (200pF, 0
).
Table 2. Absolute Maximum Ratings
(1)
Warning:
NC = Not Connected.
Warning:
NC = Not Connected.
2/15
M2201