參數(shù)資料
型號(hào): MK20DX256ZVLK10R
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, FLASH, 100 MHz, RISC MICROCONTROLLER, PQFP80
封裝: 12 X 12 MM, LQFP-80
文件頁(yè)數(shù): 57/73頁(yè)
文件大?。?/td> 1046K
代理商: MK20DX256ZVLK10R
6.8.7 I2C switching specifications
6.8.8 UART switching specifications
6.8.9 SDHC specifications
The following timing specs are defined at the chip I/O pin and must be translated
appropriately to arrive at timing specs/constraints for the physical interface.
Table 44. SDHC switching specifications
Num
Symbol
Description
Min.
Max.
Unit
Operating voltage
2.7
3.6
V
Card input clock
SD1
fpp
Clock frequency (low speed)
0
400
kHz
fpp
Clock frequency (SD\SDIO full speed)
0
25
MHz
fpp
Clock frequency (MMC full speed)
0
20
MHz
fOD
Clock frequency (identification mode)
0
400
kHz
SD2
tWL
Clock low time
7
ns
SD3
tWH
Clock high time
7
ns
SD4
tTLH
Clock rise time
3
ns
SD5
tTHL
Clock fall time
3
ns
SDHC output / card inputs SDHC_CMD, SDHC_DAT (reference to SDHC_CLK)
SD6
tOD
SDHC output delay (output valid)
-5
6.5
ns
SDHC input / card inputs SDHC_CMD, SDHC_DAT (reference to SDHC_CLK)
SD7
tISU
SDHC input setup time
5
ns
SD8
tIH
SDHC input hold time
0
ns
Peripheral operating requirements and behaviors
K20 Sub-Family Data Sheet Data Sheet, Rev. 5, 5/2011.
60
Preliminary
Freescale Semiconductor, Inc.
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