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參數(shù)資料
| 型號： | LFM34INTPU1A |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 5/60頁 |
| 文件大小： | 0K |
| 描述： | ADAPTER MPC5534 324-BGA |
| 標準包裝： | 1 |
| 模塊/板類型： | 適配器板 |
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Electrical Characteristics
MPC5534 Microcontroller Data Sheet, Rev. 6
Freescale Semiconductor
13
3.7.1
Input Value of Pins During POR Dependent on VDD33
When powering up the device, VDD33 must not lag the latest VDDSYN or RESET power pin (VDDEH6) by
more than the VDD33 lag specification listed in Table 6, spec 8. This avoids accidentally selecting the
bypass clock mode because the internal versions of PLLCFG[0:1] and RSTCFG are not powered and
therefore cannot read the default state when POR negates. VDD33 can lag VDDSYN or the RESET power
pin (VDDEH6), but cannot lag both by more than the VDD33 lag specification. This VDD33 lag specification
applies during power up only. VDD33 has no lead or lag requirements when powering down.
3.7.2
Power-Up Sequence (VRC33 Grounded)
The 1.5 V VDD power supply must rise to 1.35 V before the 3.3 V VDDSYN power supply and the RESET
power supply rises above 2.0 V. This ensures that digital logic in the PLL for the 1.5 V power supply does
not begin to operate below the specified operation range lower limit of 1.35 V. Because the internal 1.5 V
POR is disabled, the internal 3.3 V POR or the RESET power POR must hold the device in reset. Since
they can negate as low as 2.0 V, VDD must be within specification before the 3.3 V POR and the RESET
POR negate.
Figure 3. Power-Up Sequence (VRC33 Grounded)
3.7.3
Power-Down Sequence (VRC33 Grounded)
The only requirement for the power-down sequence with VRC33 grounded is if VDD decreases to less than
its operating range, VDDSYN or the RESET power must decrease to less than 2.0 V before the VDD power
increases to its operating range. This ensures that the digital 1.5 V logic, which is reset only by an ORed
POR and can cause the 1.5 V supply to decrease less than its specification value, resets correctly. See
Table 6, footnote 1.
VDDSYN and RESET Power
VDD
2.0 V
1.35 V
VDD must reach 1.35 V before VDDSYN and the RESET power reach 2.0 V
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| LFM-39A | 制造商:Leader 功能描述: |
| LFM53INTPU1A | 功能描述:IC 與器件插座 MPC5553 324-PIN BGA TO P RoHS:否 制造商:Molex 產品:LGA Sockets 節(jié)距:1.02 mm 排數(shù): 位置/觸點數(shù)量:2011 觸點電鍍:Gold 安裝風格:SMD/SMT 端接類型:Solder 插座/封裝類型:LGA 2011 工作溫度范圍:- 40 C to + 100 C |
| LFM53INTPWA | 功能描述:IC 與器件插座 MPC5553 416-PIN BGA TO P RoHS:否 制造商:Molex 產品:LGA Sockets 節(jié)距:1.02 mm 排數(shù): 位置/觸點數(shù)量:2011 觸點電鍍:Gold 安裝風格:SMD/SMT 端接類型:Solder 插座/封裝類型:LGA 2011 工作溫度范圍:- 40 C to + 100 C |
| LFM54INTPWA | 功能描述:插座和適配器 PB-FREE MPC5554 BGA TO P RoHS:否 制造商:Silicon Labs 產品:Adapter 用于:EM35x |
| LFM65INTPU1A | 功能描述:插座和適配器 PBSN MPC5565 324 BGA TO RoHS:否 制造商:Silicon Labs 產品:Adapter 用于:EM35x |
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