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NRF51822-CFAB-R7 数据表(PDF) 57 Page - Nordic Semiconductor

部件名 NRF51822-CFAB-R7
功能描述  Multiprotocol Bluetooth® low energy/2.4 GHz RF System on Chip
PDF  130 Pages
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制造商  NORDIC [Nordic Semiconductor]
网页  https://www.nordicsemi.com/
标志 NORDIC - Nordic Semiconductor

NRF51822-CFAB-R7 数据表(HTML) 57 Page - Nordic Semiconductor

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Page 57
nRF51822 Product Specification v3.3
8.8
Serial Peripheral Interface Slave (SPIS) specifications
Table 44 SPIS specifications
Figure 12 SPIS timing diagram, one byte transmission, SPI Mode 0
Table 45 SPIS timing parameters
Symbol
Description
Min.
Typ.
Max.
Units
Test
level
ISPIS125K
Run current for SPI slave at 125 kbps.1
1. CSN asserted.
180
μA
1
ISPIS2M
Run current for SPI slave at 2 Mbps.1
183
μA
1
fSPIS
Bit rates for SPIS.
0.125
42
2. This bit rate is only possible if the instructions are followed in
Section 4.10.1 “Enable 4 Mbps SPIS bit rate” on
page 35.
Mbps
N/A
Symbol
Description
Note
Min.
Typ.
Max.
Units
Test
level
tDC
Data to SCK setup.
10
ns
1
tDH
SCK to data hold.
10
ns
1
tCSD
CSN to data valid.
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.
7100
2100
ns
1
tCD
SCK to data valid.
CLOAD = 10 pF
972
2. Increases/decreases with 1.2 ns/pF load.
ns
1
tCL
SCK low time.
40
ns
1
tCH
SCK high time.
40
ns
1
tCC
CSN to SCK setup.
Low power mode.1
Constant latency mode.1
7000
2000
ns
1
tCCH
Last SCK edge to CSN hold.
2000
ns
1
tCWH
CSN inactive time.
300
ns
1
tCDZ
CSN to output high Z.
40
ns
1
fSCK
SCK frequency.
0.125
2
MHz
1
tR,tF
SCK rise and fall time.
100
ns
1
b7
b6
b0
b7
b0
tCD
tDH
tDC
tCL
tCH
SCK
MOSI
MISO
CSN
tCWH
tCDZ
tCCH
tCSD
tCC



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