參數(shù)資料
型號： MPC8535CVTATH
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 1250 MHz, MICROPROCESSOR, PBGA783
封裝： 29 X 29 MM, 2.80 MM HEIGHT, 1 MM PITCH, LEAD FREE, PLASTIC, FCBGA-783
文件頁數(shù)： 100/126頁
文件大小： 2861K
代理商： MPC8535CVTATH
Enhanced Secure Digital Host Controller (eSDHC)
MPC8535E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 3
Freescale Semiconductor
75
2.13.2
eSDHC AC Timing Specifications
Table 56 provides the eSDHC AC timing specifications as defined in Figure 44.
Output low voltage
VOL
IOL = 100uA @OVDDmin
—
0.125 * OVDD
V
—
Output high voltage
VOH
IOH = -100 uA
OVDD - 0.2
—
2
Output low voltage
VOL
IOL = 2 mA
—
0.3
—
2
Notes:
1. The min VIL and VIH values are based on the respective min and max OVIN values found in Table 3.
2. Open drain mode for MMC cards only.
Table 56. eSDHC AC Timing Specifications
At recommended operating conditions (see Table 3)
Parameter
Symbol1
Min
Max
Unit
Notes
SD_CLK clock frequency:
SD/SDIO Full speed/high speed mode
MMC Full speed/high speed mode
fSHSCK
0
25/50
20/52
MHz
2, 5
SD_CLK clock frequency - identification mode
fSIDCK
0
100
400
KHz
3, 5
SD_CLK clock low time - High speed/Full speed mode
tSHSCKL
7/10
—
ns
5
SD_CLK clock high time - High speed/Full speed mode
tSHSCKH
7/10
—
ns
5
SD_CLK clock rise and fall times
tSHSCKR/
tSHSCKF
—3
ns
5
Input setup times: SD_CMD, SD_DATx, SD_CD to
SD_CLK
tSHSIVKH
5—
ns
5
Input hold times: SD_CMD, SD_DATx, SD_CD to SD_CLK
tSHSIXKH
2.5
—
ns
4,5
Output delay time: SD_CLK to SD_CMD, SD_DATx valid
tSHSKHOV
–3
3
ns
5
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, tFHSKHOV symbolizes eSDHC
high speed mode device timing (SHS) clock reference (K) going to the high (H) state, with respect to the output (O) reaching
the invalid state (X) or output hold 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. In full speed mode, clock frequency value can be 0–25 MHz for a SD/SDIO card and 0–20 MHz for a MMC card. In high speed
mode, clock frequency value can be 0–50 MHz for a SD/SDIO card and 0–52MHz for a MMC card.
3. 0 Hz means to stop the clock. The given minimum frequency range is for cases were a continuous clock is required.
4. To satisfy hold timing, the delay difference between clock input and cmd/data input must not exceed 2ns.
5. CCARD ≤10 pF, (1 card), and CL = CBUS + CHOST+CCARD ≤ 40 pF
Table 55. eSDHC interface DC Electrical Characteristics (continued)
At recommended operating conditions (see Table 3)
Characteristic
Symbol
Condition
Min
Max
Unit
Notes
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