ST92F124/F150/F250 - ELECTRICAL CHARACTERISTICS
SCI-M TIMING TABLE
(VDD = 5V ± 10%, TA = –40°C to +125°C, CLoad = 50pF, fINTCLK = 24MHz, unless otherwise specified)
N° Symbol
Parameter
Condition
Value (1)
Min
Max
Unit
FRxCKIN Frequency of RxCKIN
TwRxCKIN RxCKIN shortest pulse
1x mode
16x mode
1x mode
16x mode
4 x Tck
2 x Tck
fINTCLK / 8
fINTCLK / 4
MHz
MHz
s
s
FTxCKIN Frequency of TxCKIN
TwTxCKIN TxCKIN shortest pulse
1x mode
16x mode
1x mode
16x mode
4 x Tck
2 x Tck
fINTCLK / 8
fINTCLK / 4
MHz
MHz
s
s
1 TsDS
DS (Data Stable) before
rising edge of RxCKIN
1x mode reception with RxCKIN
Tck / 2
ns
2 TdD1
3 TdD2
TxCKIN to Data out
1x mode transmission with external
delay Time
clock CLoad < 50pF
CLKOUT to Data out
delay Time
1x mode transmission with CLKOUT
350
2.5 x Tck ns
ns
Legend:
Tck = INTCLK period = Crystal Oscillator Clock period when CLOCK1 is not divided by 2;
2 x Crystal Oscillator Clock period when CLOCK1 is divided by 2;
Crystal Oscillator Clock period x PLL factor when the PLL is enabled.
Note 1: Values guaranteed by product characterization, not tested in production.
SCI TIMING
394/429
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