Unless otherwise noted: TA=-40o
參數(shù)資料
型號(hào): XR20V2170L40-0A-EB
廠商: Exar Corporation
文件頁數(shù): 39/49頁
文件大?。?/td> 0K
描述: EVAL BOARD FOR XR20V2170 40QFN
標(biāo)準(zhǔn)包裝: 1
系列: *
AC ELECTRICAL CHARACTERISTICS - SPI-BUS TIMING SPECIFICATIONS
Unless otherwise noted: TA=-40o to +85oC, Vcc=2.97 - 3.63V
SYMBOL
PARAMETER
LIMITS
± 10%
MIN
MAX
UNIT
CONDITIONS
fSCL
SPI clock frequency
18
MHz
TTR
CS# HIGH to SO three-state time
100
ns
CL = 70 pF
TCSS
CS# to SCL setup time
100
ns
TCSH
CS# to SCL hold time
20
ns
TDO
SCL fall to SO valid time
15
ns
CL = 70 pF
TDS
SI to SCL setup time
15
ns
TDH
SI to SCL hold time
10
ns
TCP
SCL period time
55
ns
TCH + TCL
TCH
SCL HIGH time
27
ns
TCL
SCL LOW time
27
ns
TCSW
CS# HIGH pulse width
200
ns
TD9
SPI output data valid
200
ns
TD10
SPI modem output data valid
200
ns
TD11
SPI transmit interrupt clear
200
ns
TD12
SPI modem input interrupt clear
200
ns
TD13
SPI input pin interrupt clear
200
ns
TD14
SPI receive interrupt clear
200
ns
FIGURE 23. SPI-BUS TIMING
T CSH
T CS S
T DS
T DH
T CL
T CH
CS #
SC L K
SI
SO
...
T CSH
T CS W
T DO
T TR
XR20V2170
44
I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER
REV. 1.0.1
3.3V
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