MIC2778 Micrel Semiconductor, MIC2778 Datasheet - Page 6

• Manufacturer Part Number: MIC2778
• Description: Mic2778 Voltage Monitor With Adjustable Hysteresis
• Manufacturer: Micrel Semiconductor

Pin Description (continued)
March 2005
Pin Number
Pin Number
Pin Number
39
39
39
40
40
40
40
41
41
41
41
48
48
48
48
47
47
47
47
37
37
37
37
17
17
17
17
33
33
33
33
46
46
20
20
20
20
18
18
19
19
30
30
7
7
7
7
RFILTER[A&B]
RFILTER[A&B]
RFILTER[A&B]
RFILTER[A&B]
Pin Name
Pin Name
Pin Name
GND
GND
GND
GND
SDA
SDA
SDA
SDA
SCL
SCL
SCL
SCL
/INT
/INT
/INT
/INT
NC
NC
NC
NC
A2
A2
A2
A1
A1
A1
A1
A0
A0
A0
A0
Pin Function
Pin Function
Pin Function
SMBus Address Select Pins: Connect to ground or leave open in order to
SMBus Address Select Pins: Connect to ground or leave open in order to
SMBus Address Select Pins: Connect to ground or leave open in order to
program device SMBus base address. These inputs have internal pull-up
program device SMBus base address. These inputs have internal pull-up
program device SMBus base address. These inputs have internal pull-up
program device SMBus base address. These inputs have internal pull-up
resistors to VSTBY[A/B].
resistors to VSTBY[A/B].
resistors to VSTBY[A/B].
resistors to VSTBY[A/B].
SMBus Data: Bidirectional SMBus data line.
SMBus Data: Bidirectional SMBus data line.
SMBus Data: Bidirectional SMBus data line.
SMBus Data: Bidirectional SMBus data line.
SMBus Clock: Input.
SMBus Clock: Input.
SMBus Clock: Input.
SMBus Clock: Input.
Interrupt Output: Open-drain, active-low. Asserted whenever a power fault
Interrupt Output: Open-drain, active-low. Asserted whenever a power fault
Interrupt Output: Open-drain, active-low. Asserted whenever a power fault
Interrupt Output: Open-drain, active-low. Asserted whenever a power fault
is detected if the INTMSK bit (CS Register Bit D[3]) is a logical "0". This
is detected if the INTMSK bit (CS Register Bit D[3]) is a logical "0". This
is detected if the INTMSK bit (CS Register Bit D[3]) is a logical "0". This
is detected if the INTMSK bit (CS Register Bit D[3]) is a logical "0". This
output is cleared by performing an "echo reset" to the appropriate fault bit(s)
output is cleared by performing an "echo reset" to the appropriate fault bit(s)
output is cleared by performing an "echo reset" to the appropriate fault bit(s)
output is cleared by performing an "echo reset" to the appropriate fault bit(s)
in the STAT[A/B] and/or CS registers. This pin requires an external pull-up
in the STAT[A/B] and/or CS registers. This pin requires an external pull-up
in the STAT[A/B] and/or CS registers. This pin requires an external pull-up
in the STAT[A/B] and/or CS registers. This pin requires an external pull-up
resistor to V
resistor to V
resistor to V
resistor to V
3 Pins, IC Ground Connections: Tie directly to the system’s analog GND
3 Pins, IC Ground Connections: Tie directly to the system’s analog GND
3 Pins, IC Ground Connections: Tie directly to the system’s analog GND
3 Pins, IC Ground Connections: Tie directly to the system’s analog GND
plane directly at the device.
plane directly at the device.
plane directly at the device.
plane directly at the device.
Connecting this pin to GND through a 110kΩ, 1% resistor will provide a
Connecting this pin to GND through a 110kΩ, 1% resistor will provide a
Connecting this pin to GND through a 110kΩ, 1% resistor will provide a
Connecting this pin to GND through a 110kΩ, 1% resistor will provide a
signifi cant improvement in timeout duration accuracy for slow overcurrent
signifi cant improvement in timeout duration accuracy for slow overcurrent
signifi cant improvement in timeout duration accuracy for slow overcurrent
signifi cant improvement in timeout duration accuracy for slow overcurrent
faults on Slot A and Slot B. If left fl oating (NC), overcurrent timeout duration
faults on Slot A and Slot B. If left fl oating (NC), overcurrent timeout duration
faults on Slot A and Slot B. If left fl oating (NC), overcurrent timeout duration
faults on Slot A and Slot B. If left fl oating (NC), overcurrent timeout duration
accuracy is determined by the specifi cation for V
accuracy is determined by the specifi cation for V
accuracy is determined by the specifi cation for V
accuracy is determined by the specifi cation for V
see the “Circuit Breaker Function” text in the “Functional Description” section
see the “Circuit Breaker Function” text in the “Functional Description” section
see the “Circuit Breaker Function” text in the “Functional Description” section
see the “Circuit Breaker Function” text in the “Functional Description” section
for more detail.
for more detail.
for more detail.
for more detail.
Reserved: Make no external connections to these pins.
Reserved: Make no external connections to these pins.
Reserved: Make no external connections to these pins.
Reserved: Make no external connections to these pins.
6
STBY
STBY
STBY
.
.
FILTER
and I
FILTER
M9999-033105
. Please