MEC1322 Datasheet, PDF (391/456 Pages) Microchip Technology – Keyboard and Embedded Controller for Notebook PC

MEC1322
37.2.4 DC ELECTRICAL CHARACTERISTICS FOR I/O BUFFERS
TABLE 37-4: DC ELECTRICAL CHARACTERISTICS
Parameter
Symbol
MIN TYP MAX
Units
Comments
All PIO Buffers
Pull-up current
I_PU
PIO Type Buffer
39
84
162 μA
Internal PU/PD selected via the GPIO
Pin Control Register.
Pull-down current
I_PD
I Type Input Buffer
39
65
105 μA
TTL Compatible Schmitt Trigger Input
Low Input Level
V_ILI
High Input Level
V_IHI
Tolerance
0.7x
VCC1
0.3x V
VCC1
V
3.63 V
This buffer is not 5V tolerant.
Schmitt Trigger Hyster- V_HYS
esis
O-2 mA Type Buffer
400
mV
Low Output Level
V_OL
High Output Level
V_OH
VCC1-
0.4
0.4 V
V
I_OL = 2 mA
I_OH = -2 mA
Tolerance
IO-2 mA Type Buffer
_
OD-2 mA Type Buffer
_
_
_
This buffer is not 5V tolerant.
_ Same characteristics as an I and an O-
2mA.
Low Output Level
V_OL
Tolerance
IOD-2 mA Type Buffer
_
O-4 mA Type Buffer
0.4 V
V_OL = 2 mA
_
_
_
This buffer is not 5V tolerant.
_ Same characteristics as an I and an
OD-2mA.
Low Output Level
V_OL
High Output Level
V_OH
VCC1-
0.4
0.4 V
V
I_OL = 4 mA
I_OH = -4 mA
Tolerance
IO-4 mA Type Buffer
_
OD-4 mA Type Buffer
_
_
_
This buffer is not 5V tolerant.
_ Same characteristics as an I and an O-
4mA.
Low Output Level
V_OL
Tolerance
IOD-4 mA Type Buffer
_
0.4 V
V_OL = 4 mA
_
_
_
This buffer is not 5V tolerant.
_ Same characteristics as an I and an
OD-4mA.
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DS00001719D-page 391