參數(shù)資料
型號： DS100BR210EVK/NOPB
廠商： National Semiconductor
文件頁數(shù)： 2/43頁
文件大?。?/td> 0K
描述： EVAL KIT FOR DS100BR210
標準包裝： 1
系列： *
SNLS338E – JANUARY 2011 – REVISED FEBRUARY 2013
Electrical Characteristics — Serial Management Bus Interface
Over recommended operating supply and temperature ranges unless other specified.
Parameter
Test Conditions
Min
Typ
Max
Units
Serial Bus Interface DC Specifications: (1)
VIL
Data, Clock Input Low Voltage
0.8
V
VIH
Data, Clock Input High Voltage
2.1
3.6
V
IPULLUP
Current Through Pull-Up Resistor
High Power Specification
4
mA
or Current Source
VDD
Nominal Bus Voltage
2.375
3.6
V
ILEAK-Bus
Input Leakage Per Bus Segment
See (2)
-200
+200
A
CI
Capacitance for SDA and SCL
See(2) (3) (4)
10
pF
RTERM
External Termination Resistance
Pullup VDD = 3.3V,
(2) (3) (5)
2000
pull to VDD = 2.5V ± 5% OR 3.3V ±
Pullup VDD = 2.5V,
(2) (3) (5)
1000
10%
Serial Bus Interface Timing Specifications
FSMB
Bus Operating Frequency
ENSMB = VDD (Slave Mode)
400
kHz
ENSMB = FLOAT (Master Mode
280
400
520
kHz
(1)
TBUF
Bus Free Time Between Stop and
1.3
s
Start Condition
THD:STA
Hold time after (Repeated) Start
At IPULLUP, Max
Condition. After this period, the first
0.6
s
clock is generated.
TSU:STA
Repeated Start Condition Setup
0.6
s
Time
TSU:STO
Stop Condition Setup Time
0.6
s
THD:DAT
Data Hold Time
0
ns
TSU:DAT
Data Setup Time
100
ns
TLOW
Clock Low Period
1.3
s
THIGH
Clock High Period
See(6)
0.6
50
s
tF
Clock/Data Fall Time
See(6)
300
ns
tR
Clock/Data Rise Time
See (6)
300
ns
tPOR
Time in which a device must be
See(6) (4)
500
ms
operational after power-on reset
(1)
EEPROM interface requires 400 KHz capable EEPROM device.
(2)
Recommended value.
(3)
Recommended maximum capacitance load per bus segment is 400pF.
(4)
Guaranteed by Design and/or characterization. Parameter not tested in production.
(5)
Maximum termination voltage should be identical to the device supply voltage.
(6)
Compliant to SMBus 2.0 physical layer specification. See System Management Bus (SMBus) Specification Version 2.0, section 3.1.1
SMBus common AC specifications for details.
10
Copyright 2011–2013, Texas Instruments Incorporated
Product Folder Links: DS100BR111
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