NJW1180 Ver la hoja de datos (PDF) - Japan Radio Corporation
Número de pieza
componentes Descripción
Fabricante
NJW1180 Datasheet PDF : 15 Pages
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NJW1180
s I2C BUS CHARACTERISTICS (SDA, SCL)
I2C BUS Load Conditions: Pull up resistance 4k (Connected to +5V), Load capacitance 200pF (Connected to GND)
PARAMETER
SYM
BOL
STANDARD MODE
FAST MODE
UNIT
MIN. TYP. MAX. MIN. TYP. MAX.
Low Level Input Voltage
VIL
0.0
High Level Input Voltage
VIH
2.7
Hysteresis of Schmitt trigger inputs
Vhys
-
LOW level output voltage (3mA at SDA pin)
VOL
0
Output fall time from VIHmin to VILmax with
a bus capacitance from 10pF to 400pF
tof
-
Pulse width of spikes which must be suppressed by the input
filter
tSP
-
Input current each I/O pin with an input voltage between
0.1VDD and 0.9VDDmax
Ii
-10
Capacitance for each I/O pin
Ci
-
SCL clock frequency
fSCL
-
Hold time (repeated) START condition.
tHD:STA 4.0
LOW period of the SCL clock
tLOW 4.7
HIGH period of the SCL clock
tHIGH 4.0
Set-up time for a repeated START condition
tSU:STA 4.7
Data hold time
tHD:DAT
0
Data set-up time
tSU:DAT 250
Rise time of both SDA and SCL signals
tr
-
Fall time of both SDA and SCL signals
tf
-
Set-up time for STOP condition
tSU:STO 4.0
Bus free time between a STOP and START
condition
tBUF
4.7
Capacitive load for each bus line
Cb
-
Noise margin at the LOW level
VnL 0.5
Noise margin at the HIGH level
VnH
1
- 1.5 0.0 - 1.5 V
- 5.0 2.7 - 5.0 V
-
- 0.25 -
-
V
- 0.4 0
- 0.4 V
-
250
20
- 250 ns
+0.1Cb
-
-
0
-
50 ns
-
10 -10 -
10 µA
-
10
-
-
10 pF
- 100 -
- 400 kHz
-
- 0.6 -
-
µs
-
- 1.3 -
-
µs
-
- 0.6 -
-
µs
-
- 0.6 -
-
µs
- 3.45 0
- 0.9 µs
-
- 100 -
-
ns
- 1000 -
- 300 ns
- 300 -
- 300 ns
-
- 0.6 -
-
µs
-
- 1.3 -
-
µs
- 400 -
- 400 pF
-
- 0.5 -
-
V
-
-
1
-
-
V
Cb ; total capacitance of one bus line in pF.
SDA
tf
tr
SCL
tHD:STA
S
tLOW
tf
tSU:DAT
tHD:STA
tHD:DAT
tHIGH
tSU:STA
Sr
tSP
tr
tBUF
tSU:STO
P
S
–5–
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