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PCA9554ADGVR bảng dữ liệu(PDF) 7 Page - Texas Instruments

tên linh kiện PCA9554ADGVR
Giải thích chi tiết về linh kiện  PCA9554A Remote 8-Bit I2C and SMBus I/O Expander With Interrupt Output and Configuration Registers
PDF  42 Pages
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PCA9554ADGVR bảng dữ liệu(HTML) 7 Page - Texas Instruments

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6.6 I2C Interface Timing Requirements
over operating free-air temperature range (unless otherwise noted) (see Figure 7-1)
STANDARD MODE
I2C BUS
FAST MODE
I2C BUS
UNIT
MIN
MAX
MIN
MAX
fscl
I2C clock frequency
0
100
0
400
kHz
tsch
I2C clock high time
4
0.6
μs
tscl
I2C clock low time
4.7
1.3
μs
tsp
I2C spike time
50
50
ns
tsds
I2C serial-data setup time
250
100
ns
tsdh
I2C serial-data hold time
0
0
ns
ticr
I2C input rise time
1000 20 + 0.1Cb (1)
300
ns
ticf
I2C input fall time
300 20 + 0.1Cb (1)
300
ns
tocf
I2C output fall time
10-pF to 400-pF bus
300 20 + 0.1Cb (1)
300
ns
tbuf
I2C bus free time between Stop and Start
4.7
1.3
μs
tsts
I2C Start or repeated Start condition setup
4.7
0.6
μs
tsth
I2C Start or repeated Start condition hold
4
0.6
μs
tsps
I2C Stop condition setup
4
0.6
μs
tvd(data) Valid data time
SCL low to SDA output valid
300
50
ns
tvd(ack) Valid data time of ACK condition
ACK signal from SCL low to
SDA (out) low
0.3
3.45
0.1
0.9
μs
Cb
I2C bus capacitive load
400
400
ns
(1)
Cb = Total capacitive load of one bus in pF
6.7 Switching Characteristics
over operating free-air temperature range (unless otherwise noted) (see Figure 7-2 and Figure 7-3)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
STANDARD MODE
I2C BUS
FAST MODE
I2C BUS
UNIT
MIN
MAX
MIN
MAX
tiv
Interrupt valid time
P port
INT
4
4
μs
tir
Interrupt reset delay time
SCL
INT
4
4
μs
tpv
Output data valid
SCL
P7–P0
350
350
ns
tps
Input data setup time
P port
SCL
100
100
ns
tph
Input data hold time
P port
SCL
1
1
μs
www.ti.com
PCA9554A
SCPS127F – SEPTEMBER 2006 – REVISED MARCH 2021
Copyright © 2021 Texas Instruments Incorporated
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Product Folder Links: PCA9554A



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