參數(shù)資料
型號： MK40X512VLQ100
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： RISC MICROCONTROLLER, PQFP144
封裝： 20 X 20 MM, LQFP-144
文件頁數(shù)： 47/68頁
文件大小： 1005K
代理商： MK40X512VLQ100
Table 35. USB voltage regulator electrical specifications (continued)
Symbol
Description
Min.
Typ.
Max.
Unit
Notes
COUT
External output capacitor
1.76
2.2
8.16
μF
ESR
External output capacitor equivalent series re‐
sistance
1
—
100
mΩ
ILIM
Current limitation threshold
185
290
395
mA
1. Operating in pass-through mode: regulator output voltage equal to the input voltage minus a drop proportional to ILoad.
6.8.4 DSPI Switching Specifications for Low-speed Operation
The DMA Serial Peripheral Interface (DSPI) provides a synchronous serial bus with
master and slave operations. Many of the transfer attributes are programmable. The tables
below provides DSPI timing characteristics for classic SPI timing modes. Refer to the
DSPI chapter of the Reference Manual for information on the modified transfer formats
used for communicating with slower peripheral devices.
Table 36. Master Mode DSPI Timing (Low-speed mode)
Num
Description
Min.
Max.
Unit
Notes
Operating voltage
1.71
3.6
V
Frequency of operation
—
12.5
MHz
DS1
DSPI_SCK output cycle time
4 x tBCLK
—
ns
DS2
DSPI_SCK output high/low time
(tSCK/2) - 4
(tSCK/2) + 4
ns
DS3
DSPI_PCSn to DSPI_SCK output valid
(tSCK/2) - 4
—
ns
DS4
DSPI_SCK to DSPI_PCSn output hold
(tSCK/2) - 4
—
ns
DS5
DSPI_SCK to DSPI_SOUT valid
—
10
ns
DS6
DSPI_SCK to DSPI_SOUT invalid
-2
—
ns
DS7
DSPI_SIN to DSPI_SCK input setup
15
—
ns
DS8
DSPI_SCK to DSPI_SIN input hold
0
—
ns
1. The DSPI module can operate across the entire operating voltage for the processor, but to run across the full voltage
range the maximum frequency of operation is reduced.
Peripheral operating requirements and behaviors
K40 Sub-Family Data Sheet Data Sheet, Rev. 1, 11/2010.
Freescale Semiconductor, Inc.
Preliminary
51
Preliminary
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