C8051F317-GMR Silicon Laboratories Inc, C8051F317-GMR Datasheet - Page 173
C8051F317-GMR
Manufacturer Part Number
C8051F317-GMR
Description
MCU 8-Bit C8051F31x 8051 CISC 16KB Flash 3.3V 24-Pin QFN EP T/R
Manufacturer
Silicon Laboratories Inc
Datasheet
1.C8051F310-TB.pdf
(228 pages)
Specifications of C8051F317-GMR
Package
24QFN EP
Device Core
8051
Family Name
C8051F31x
Maximum Speed
25 MHz
Ram Size
1.25 KB
Program Memory Size
16 KB
Operating Supply Voltage
3.3 V
Data Bus Width
8 Bit
Program Memory Type
Flash
Number Of Programmable I/os
21
Interface Type
I2C/SMBus/SPI/UART
On-chip Adc
17-chx10-bit
Operating Temperature
-40 to 85 °C
Number Of Timers
4
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
C8051F317-GMR
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
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16. 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.
SYSCLK
Clock Divide
SPI0CKR
SFR Bus
SPI0DAT
Logic
Write
Transmit Data Buffer
Receive Data Buffer
Figure 16.1. 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. 1.7
Tx Data
Rx Data
C8051F310/1/2/3/4/5/6/7
Pin Interface
Control
Control
Logic
Pin
SPI0CN
MOSI
MISO
SCK
NSS
O
C
R
S
S
B
A
R
SPI IRQ
Port I/O
173
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