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2.4.
3.
Serial Data (SDA/IO)
The SDA pin is bidirectional for serial data transfer. This pin is open-drain driven and may be wired with any number of
other open drain or open collector devices. An external pull-up resistor should be connected between SDA and VCC.
The value of this resistor and the system capacitance loading the SDA bus will determine the rise time of SDA. This
rise time will determine the maximum frequency during read operations. Low value pull-up resistors will allow higher
frequency operations while drawing higher average power. SDA/IO information applies to both asynchronous and
synchronous protocols.
When the synchronous protocol is used, the SCL/CLK input is used to positive edge clock data into the device and
negative edge clock data out of the device.
*Absolute Maximum Ratings
Operating Temperature............................. ? 40°C to +85°C
Storage Temperature ............................ ? 65°C to + 150°C
Voltage on Any Pin
with Respect to Ground ....................... ? 0.7 to V CC +0.7V
Maximum Operating Voltage.......................................6.0V
DC Output Current ..................................................5.0 mA
Table 2.
DC Characteristics
* NOTICE:
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent
damage to the device. This is a stress rating
only and functional operation of the device at
these or any other condition beyond those
indicated in the operational sections of this
specification is not implied. Exposure to
absolute maximum rating conditions for
extended periods of time may affect device
reliability.
Applicable over recommended operating range from V CC = +2.7 to 5.5V, T A C = -40°C to +85°C ( unless otherwise noted )
Symbol
Parameter
Test Condition
Min
Typ
Max
Units
V CC(2)
I CC
I CC
I CC
I CC
I SB
Supply Voltage
Supply Current (V CC = 5.5V)
Supply Current (V CC = 5.5V)
Supply Current (V CC = 5.5V)
Supply Current (V CC = 5.5V)
Standby Current (V CC = 5.5V)
Async READ at 3.57MHz
Async WRITE at 3.57MHz
Synch READ at 1MHz
Synch WRITE at 1MHz
V IN = V CC or GND
2.7
5.5
5
5
5
5
1
V
mA
mA
mA
mA
mA
V IL
V IL
V IL
(1)
(1)
(1)
SDA/IO Input Low Threshold
SCL/CLK Input Low Threshold
RST Input Low Threshold
0
0
0
V CC x 0.2
V CC x 0.2
V CC x 0.2
V
V
V
V IH
(1)(2)
V IH(1)(2)
V IH(1)(2)
I IL
I IL
I IL
I IH
I IH
SDA/IO Input High Threshold
SCL/CLK Input High Threshold
RST Input High Threshold
SDA/IO Input Low Current
SCL/CLK Input Low Current
RST Input Low Current
SDA/IO Input High Current
SCL/CLK Input High Current
0 < V IL < V CC x 0.15
0 < V IL < V CC x 0.15
0 < V IL < V CC x 0.15
V CC x 0.7 < V IH < V CC
V CC x 0.7 < V IH < V CC
V CC x 0.7
V CC x 0.7
V CC x 0.7
V CC
V CC
V CC
15
15
50
20
100
V
V
V
μ A
μ A
μ A
μ A
μ A
4
AT88SC12816C
5016KS–SMEM–08/09
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