MEC1404 Datasheet, PDF (497/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
TABLE 42-5: DC ELECTRICAL CHARACTERISTICS (CONTINUED)
Parameter
Symbol MIN
TYP MAX Units Comments
PECI Type Buffer
VREF_CPU
PECI Bus Voltage
SBTSI Bus Voltage
Input current
Input Low Current
V_BUS
V_BUS
IDC
ILEAK
PECI_I Buffer
0.95
1.28
-10
Input voltage range
VIn
-0.3
Low Input Level
VIL
1.26
V
1.9
V
100
µA
+10
µA
+Vref V
0.3
0.275 V
Vref
Connects to CPU Voltage pin
(Processor dependent)
This buffer is not 5V tolerant
This buffer is not backdrive protected.
All input and output voltages are a
function of Vref, which is connected
to CPU_VREF input.
High Input Level
VIH
0.725
Vref
V
This buffer is not 5V tolerant
This buffer is not backdrive protected.
PECI_IO
Input voltage range
VIn
Hysteresis
VHYS
-0.3
+Vref V
0.3
0.1
0.2
V
Vref Vref
All input and output voltages are a
function of Vref, which is connected
to CPU_VREF input.
See PECI Specification.
Low Input Level
VIL
0.275 V
Vref
High Input Level
VIH
0.725
V
Vref
Low Output Level
VOL
0.25 V
Vref
0.5mA < IOL < 1mA
High Output Level
VOH
0.75
Vref
V
IOH = -6mA
Tolerance
3.63
V
This buffer is not 5V tolerant
This buffer is not backdrive protected.
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DS00001956D-page 497