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NRF51822-CFAB-R7 датащи(PDF) 59 Page - Nordic Semiconductor

номер детали NRF51822-CFAB-R7
подробное описание детали  Multiprotocol Bluetooth® low energy/2.4 GHz RF System on Chip
PDF  130 Pages
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производитель  NORDIC [Nordic Semiconductor]
домашняя страница  https://www.nordicsemi.com/
Logo NORDIC - Nordic Semiconductor

NRF51822-CFAB-R7 датащи(HTML) 59 Page - Nordic Semiconductor

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Page 59
nRF51822 Product Specification v3.3
8.10
I2C compatible Two Wire Interface (TWI) specifications
Table 48 TWI specifications
Figure 14 SCL/SDA timing
Table 49 TWI timing parameters
Symbol
Description
Note
Min.
Typ. Max.
Units
Test
level
I2W100K
Run current for TWI at 100 kbps.
380
μA
1
I2W400K
Run current for TWI at 400 kbps.
400
μA
1
f2W
Bit rates for TWI.
100
400
kbps
N/A
tTWI,START
Time from STARTRX/STARTTX task is
given until start condition.
Low power mode.1
Constant latency mode.1
1. For more information on how to control the sub power modes, see the nRF51 Series Reference Manual.
3
1
4.4
μs
1
Symbol
Description
Standard
Min.
Max.
Fast
Min.
Max.
Units
Test
level
fSCL
SCL clock frequency.
100
400
kHz
1
tHD_STA
Hold time for START and repeated
START condition.
5200
1300
ns
1
tSU_DAT
Data setup time before positive
edge on SCL.
300
300
ns
1
tHD_DAT
Data hold time after negative
edge on SCL.
300
300
ns
1
tSU_STO
Setup time from SCL goes high
to STOP condition.
5200
1300
ns
1
tBUF
Bus free time between STOP and
START conditions.
4700
1300
ns
1
1/fSCL
SCL
SDA
tHD_SDA
tSU_DAT
tHD_DAT
tBUF
tSU_STO



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