LM93CIMT National Semiconductor, LM93CIMT Datasheet - Page 88

• Manufacturer Part Number: LM93CIMT
• Description: Microprocessor Support IC
• Manufacturer: National Semiconductor

Specifications of LM93CIMT

• Peak Reflow Compatible (260 C): No
• Supply Voltage Max: 3.6V
• Leaded Process Compatible: No
• Supply Voltage Min: 3V
• Operating Temperature Min: 0��C
• Package / Case: 56-TSSOP
• Operating Temperature Max: 85°C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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FAN RPM-TO-DIGITAL CHARACTERISTICS
PWM OUTPUT CHARACTERISTICS
RESET INPUT/OUTPUT CHARACTERISTICS
SMBUS TIMING CHARACTERISTICS
f
t
t
t
t
t
t
t
t
t
t
t
t
C
SMBCLK
BUF
HD;STA
SU;STA
SU;STO
SU;DAT
HD;DAT
LOW
HIGH
R
F
TIMEOUT
POR
L
AC Electrical Characteristics
The following limits apply for +3.0 V
T
Symbol
MAX
of the operating range; all other limits T
Counter Resolution
Number of fan tach pulses count is
based on
Counter Frequency
Accuracy
Frequency Tolerances
Duty-Cycle Tolerance
Output Pulse Width
Upon Power Up
Minimum Input Pulse Width
Reset Output Fall Time
SMBCLK (Clock) Clock Frequency
SMBus Free Time between Stop and
Start Conditions
Hold time after (Repeated) Start
Condition. After this period, the first
clock is generated.
Repeated Start Condition Setup Time
Stop Condition Setup Time
Data Input Setup Time to SMBCLK
High
Data Output Hold Time after SMBCLK
Low
SMBCLK Low Period
SMBCLK High Period
Rise Time
Fall Time
Timeout
SMBDAT or SMBCLK low
time required to
reset the Serial Bus
Interface to the Idle State
Time in which a device must be
operational after power-on reset
Capacitance Load on SMBCLK and
SMBDAT
Parameter
DC
to +3.6 V
A
DC
= T
, unless otherwise noted. Bold face limits apply for T
J
1.6V to 0.4V Logic Levels
V
= 25˚C unless otherwire noted.
DD
>
+2.8V
88
Conditions
(Note 9)
Typical
22.5
±
14
31
2
2
A
(Note 10)
= T
Limits
250
330
100
250
300
930
300
500
400
4.7
4.0
4.7
4.0
4.7
4.0
±
±
±
10
10
50
50
25
35
1
1
J
6
6
6
= T
MIN
kHz (max)
kHz (min)
ms (max)
ms (max)
ms (max)
pF (max)
ms (min)
µs (max)
ns (max)
µs (max)
µs (max)
µs (max)
ns (max)
ms (min)
% (max)
% (max)
% (max)
(Limits)
µs (min)
µs (min)
µs (min)
µs (min)
µs (min)
ns (min)
ns (min)
µs (min)
µs (min)
pulses
to
Units
kHz
bits
ms