C8051T630DK Silicon Laboratories Inc, C8051T630DK Datasheet - Page 156
C8051T630DK
Manufacturer Part Number
C8051T630DK
Description
KIT DEV FOR C8051T630 FAMILY
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051T630DK
Contents
Board, daughter boards, power adapter, cables, documentation and software
Processor To Be Evaluated
C8051T63x
Interface Type
USB
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
C8051T630, T631, T632, T633, T634 and T635 MCUs
For Use With
336-1465 - BOARD SOCKET DAUGHTER 20-QFN
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1464
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C8051T630/1/2/3/4/5
23. Enhanced Serial Peripheral Interface (SPI0)
The Enhanced Serial Peripheral Interface (SPI0) provides access to a flexible, full-duplex synchronous
serial bus. SPI0 can operate as a master or slave device in both 3-wire or 4-wire modes, and supports mul-
tiple masters and slaves on a single SPI bus. The slave-select (NSS) signal can be configured as an input
to select SPI0 in slave mode, or to disable Master Mode operation in a multi-master environment, avoiding
contention on the SPI bus when more than one master attempts simultaneous data transfers. NSS can
also be configured as a chip-select output in master mode, or disabled for 3-wire operation. Additional gen-
eral purpose port I/O pins can be used to select multiple slave devices in master mode.
156
SYSCLK
Clock Divide
SPI0CKR
SFR Bus
SPI0DAT
Logic
Write
Transmit Data Buffer
Receive Data Buffer
Figure 23.1. SPI Block Diagram
7
6
Shift Register
5
SPI CONTROL LOGIC
4
3
Data Path
2
SFR Bus
Control
SPI0CFG
SPI0DAT
1
SPI0DAT
Read
0
Rev. 1.0
Tx Data
Rx Data
Pin Interface
Control
Control
Logic
Pin
SPI0CN
MOSI
MISO
SCK
NSS
C
R
O
R
S
S
B
A
SPI IRQ
Port I/O
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