参数资料
型号: MPC8378ECVRAJDA
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 266 MHz, MICROPROCESSOR, PBGA689
封装: 31 X 31 MM, 2.46 MM HEIGHT, 1 MM PITCH, LEAD FREE, PLASTIC, BGA-689
文件页数: 76/125页
文件大小: 894K
代理商: MPC8378ECVRAJDA
MPC8378E PowerQUICC II Pro Processor Hardware Specifications, Rev. 5
Freescale Semiconductor
54
11.3
eSDHC AC Timing Specifications (High-Speed Mode)
The following table provides the eSDHC AC timing specifications for high-speed mode as defined in Figure 34 and Figure 35.
This figure provides the eSDHC clock input timing diagram.
Figure 33. eSDHC Clock Input Timing Diagram
Table 48. eSDHC AC Timing Specifications for High-Speed Mode
At recommended operating conditions OVDD = 3.3 V ± 165 mV.
Parameter
Min
Max
Unit
Note
SD_CLK clock frequency—high speed mode
fSHSCK
050
MHz
SD_CLK clock cycle
tSHSCK
20
ns
SD_CLK clock frequency—identification mode
fSIDCK
0400
KHz
SD_CLK clock low time
tSHSCKL
7—
ns
SD_CLK clock high time
tSHSCKH
7—
ns
SD_CLK clock rise and fall times
tSHSCKR/
tSHSCKF
—3
ns
Input setup times: SD_CMD, SD_DATx, SD_CD to SD_CLK
tSHSIVKH
5—
ns
Input hold times: SD_CMD, SD_DATx, SD_CD to SD_CLK
tSHSIXKH
0—
ns
Output delay time: SD_CLK to SD_CMD, SD_DATx valid
tSHSKHOV
—4
ns
Output Hold time: SD_CLK to SD_CMD, SD_DATx invalid
tSHSKHOX
0—
ns
SD_CLK delay within device
tINT_CLK_DLY
1.5
ns
SD Card Input Setup
tISU
6—
ns
SD Card Input Hold
tIH
2—
ns
SD Card Output Valid
tODLY
—14
ns
SD Card Output Hold
tOH
2.5
ns
Notes:
1. The symbols used for timing specifications herein follow the pattern of t(first three letters of functional block)(signal)(state)
(reference)(state) for inputs and t(first three letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tSFSIXKH
symbolizes eSDHC full mode speed device timing (SFS) input (I) to go invalid (X) with respect to the clock reference (K)
going to high (H). Also tSFSKHOV symbolizes eSDHC full speed timing (SFS) for the clock reference (K) to go high (H), with
respect to the output (O) going valid (V) or data output valid time. Note that, in general, the clock reference symbol
representation is based on five letters representing the clock of a particular functional. For rise and fall times, the latter
convention is used with the appropriate letter: R (rise) or F (fall).
2. Measured at capacitive load of 40 pF.
3. For reference only, according to the SD card specifications.
4. Average, for reference only.
eSDHC
tSHSCKR
External Clock
VM
tSHSCK
tSHSCKF
VM = Midpoint Voltage (OVDD/2)
operational mode
tSHSCKL
tSHSCKH
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