tRC 120 — ns Write to Read Cycle " />
參數(shù)資料
型號(hào): SI2457-D-GT
廠商: Silicon Laboratories Inc
文件頁(yè)數(shù): 59/60頁(yè)
文件大?。?/td> 0K
描述: IC ISOMODEM GLOBAL DAA 24TSSOP
標(biāo)準(zhǔn)包裝: 62
系列: *
Si2457/34/15/04
8
Rev. 1.3
Figure 2. SPI Slave Timing
Read Cycle Time
tRC
120
ns
Write to Read Cycle Time
tWRC
120
ns
Serial Peripheral Interface (SPI) Timing Parameters
SS Falling to First SCLK Edge
tSE
41
ns
Last SCLK Edge to SS Rising
tSD
41
ns
SS Rising to MISO High-Z
tSDZ
——
93
ns
SCLK High Time
tCKH
102
ns
SCLK Low Time
tCKL
102
ns
MOSI Valid to SCLK Sample Edge
tSIS
41
ns
SCLK Sample Edge to MOSI Change
tSIH
41
ns
SCLK Shift Edge to MISO Change
tSOH
——
93
ns
SCLK cycle time
tSCK
224
ns
Inactive time between SS actives
tNSS_INACT
81
ns
Table 6. Switching Characteristics1 (Continued)
(VD = 3.0 to 3.6 V, TA = 0 to 70 °C for F-grade, TA = –40 to 85 °C for G-grade)
Parameter
Symbol
Min
Typ
Max
Unit
Notes:
1. All timing is referenced to the 50% level of the waveform. Input test levels are VIH =VD – 0.4 V, VIL =0.4 V.
2. With 32.768 kHz clocking, allow 500 ms for the reset low-to-high minimum pulse on power-up and wake-from-power-
down conditions.
SCLK*
T
SE
SS
T
CKH
T
CKL
MOSI
T
SIS
T
SIH
MISO
T
SD
T
SOH
T
SEZ
T
SDZ
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