CAT24C208
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2
Table 1. PIN DESCRIPTION
Pin Number Pin Name Function
1 DSP V
CC
Device power from display controller
2 DSP SCL The CAT24C208 DSP serial clock bidirectional pin is used to clock all data transfers into or out of the
device DSP SDA pin and is also used to block DSP Port access when DDC Port is active.
3 DSP SDA DSP Serial Data/Address. The bidirectional DSP serial data/address pin is used to transfer data into
and out of the device from a display controller. The DSP SDA pin is an open drain output and can be
wireOR’ed with other open drain or open collector outputs.
4 V
SS
Device ground.
5 DDC SDA DDC Serial Data/Address. The bidirectional DDC serial data/address pin is used to transfer data into
and out of the device from a DDC host. The DDC SDA pin is an open drain output and can be wire−
OR’ed with other open drain or open collector outputs.
6 DDC SCL The CAT24C208 DDC serial clock bidirectional pin is used to clock all data transfers into or out of the
device DDC SDA pin, and is used to block DDC Port for access when DSP Port is active.
7 EDID SEL EDID select. The CAT24C208 EDID select input selects the active bank of memory to be accessed
via the DDC SDA/SCL interface as set in the configuration register.
8 DDC V
CC
Device power when powered from a DDC host.
Table 2. ABSOLUTE MAXIMUM RATINGS
Parameters Ratings Units
Temperature Under Bias –55 to +125 °C
Storage Temperature –65 to +150 °C
Voltage on Any Pin with Respect to Ground (Note 1) –2.0 to +V
CC
+2.0 V
V
CC
with Respect to Ground –2.0 to +7.0 V
Package Power Dissipation Capability (T
A
= 25°C) 1.0 W
Lead Soldering Temperature (10 secs) 300 °C
Output Short Circuit Current (Note 2) 100 mA
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. The minimum DC input voltage is –0.5 V. During transitions, inputs may undershoot to –2.0 V for periods of less than 20 ns. Maximum DC
voltage on output pins is V
CC + 0.5 V, which may overshoot to VCC + 2.0 V for periods of less than 20 ns.
2. Output shorted for no more than one second. No more than one output shorted at a time.
Table 3. RELIABILITY CHARACTERISTICS
Symbol Parameter Reference Test Method Min Units
N
END
(Note 3) Endurance MIL−STD−883, Test Method 1033 1,000,000 Cycles/Byte
T
DR
(Note 3) Data Retention MIL−STD−883, Test Method 1008 100 Years
V
ZAP
(Note 3) ESD Susceptibility JEDEC Standard JESD 22 2000 Volts
I
LTH
(Notes 3 and 4) Latch−up JEDEC Standard 17 100 mA
3. This parameter is tested initially and after a design or process change that affects the parameter.
4. Latch−up protection is provided for stresses up to 100 mA on address and data pins from –1 V to V
CC
+1 V.
Table 4. CAPACITANCE (T
A
= 25°C, f = 1.0 MHz, V
CC
= 5 V)
Symbol Parameter Conditions Min Typ Max Units
C
I/O
(Note 5) Input/Output Capacitance (Either DSP or DDC SDA) V
I/O
= 0 V 8 pF
C
IN
(Note 5) Input Capacitance (EDID, Either DSP or DDC SCL) V
IN
= 0 V 6 pF
5. This parameter is tested initially and after a design or process change that affects the parameter.
