SCH3112 Datasheet, PDF (355/396 Pages) SMSC Corporation – LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports

LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports
Datasheet
Chapter 28 Operational Description
28.1
28.1.1
28.1.2
Maximum Guaranteed Ratings
Operating Temperature Range ........................................................................................ -40^oC to +85^oC
Storage Temperature Range............................................................................................. -55^o to +150^oC
Lead Temperature Range ............................................................... Refer to JEDEC Spec. J-STD-020b
Note:
Stresses above those listed above and below could cause permanent damage to the device.
This is a stress rating only and functional operation of the device at any other condition above
those indicated in the operation sections of this specification is not implied. When powering
this device from laboratory or system power supplies, it is important that the Absolute Maximum
Ratings not be exceeded or device failure can result. Some power supplies exhibit voltage
spikes on their outputs when the AC power is switched on or off. In addition, voltage transients
on the AC power line may appear on the DC output. If this possibility exists, it is suggested
that a clamp circuit be used.
Super I/O section (pins 3 to 112)
Maximum V_cc ................................................................................................................................... +5.5V
Positive Voltage on any pin, with respect to Ground ................................................................. V_cc+0.3V
Negative Voltage on any pin, with respect to Ground ..................................................................... -0.3V
Hardware Monitoring Block (pins 1 and 2 and pins 113 to 128)
Maximum HVTR ............................................................................................................................... +5.5V
Positive Voltage on any pin, with respect to Ground (Except analog inputs) ...................... HVTR+0.3V
Negative Voltage on any pin, with respect to Ground (Except analog inputs)................................ -0.3V
28.2 DC Electrical Characteristics
Table 28.1 Buffer Operational Ratings
SUPER I/O BLOCK (T_A = -40^OC – +85^OC, V_CC = +3.3 V ± 10%)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
COMMENTS
I Type Input Buffer
Low Input Level
High Input Level
IS Type Input Buffer
Low Input Level
High Input Level
Schmitt Trigger Hysteresis
V_ILI
V_IHI
V_ILIS
V_IHIS
V_HYS
0.8
2.0
5.5
0.8
2.2
5.5
100
V
TTL Levels
V
V
Schmitt Trigger
V
Schmitt Trigger
mV
SMSC SCH311X
339
DATASHEET
Rev 0.2 (09-28-04)