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參數(shù)資料
| 型號： | MPC5553MVR112 |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, FLASH, 112 MHz, MICROCONTROLLER, PBGA416 |
| 封裝： | 27 X 27 MM, 1 MM PITCH, LEAD FREE, PLASTIC, MS-034AAL-1, BGA-416 |
| 文件頁數(shù)： | 3/68頁 |
| 文件大?。?/td> | 1261K |
| 代理商： | MPC5553MVR112 |
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Electrical Characteristics
MPC5553 Microcontroller Data Sheet, Rev. 3.0
Freescale Semiconductor
11
3.7
Power-Up/Down Sequencing
Power sequencing between the 1.5 V power supply and VDDSYN or the RESET power supplies is required
if using an external 1.5 V power supply with VRC33 tied to ground (GND). To avoid power-sequencing,
VRC33 must be powered up within the specified operating range, even if the on-chip voltage regulator
controller is not used. Refer to Section 3.7.2, “Power-Up Sequence (VRC33 Grounded),” and
Power sequencing requires that VDD33 must reach a certain voltage where the values are read as ones
before the POR signal negates. Refer to Section 3.7.1, “Input Value of Pins During POR Dependent on
Although power sequencing is not required between VRC33 and VDDSYN during power up, VRC33 must
not lead VDDSYN by more than 600 mV or lag by more than 100 mV for the VRC stage turn-on to operate
within specification. Higher spikes in the emitter current of the pass transistor occur if VRC33 leads or lags
VDDSYN by more than these amounts. The value of that higher spike in current depends on the board power
supply circuitry and the amount of board level capacitance.
Furthermore, when all of the PORs negate, the system clock starts to toggle, adding another large increase
of the current consumed by VRC33. If VRC33 lags VDDSYN by more than 100 mV, the increase in current
consumed can drop VDD low enough to assert the 1.5 V POR again. Oscillations are possible when the
1.5 V POR asserts and stops the system clock, causing the voltage on VDD to rise until the 1.5 V POR
negates again. All oscillations stop when VRC33 is powered sufficiently.
When powering down, VRC33 and VDDSYN have no delta requirement to each other, because the bypass
capacitors internal and external to the device are already charged. When not powering up or down, no delta
between VRC33 and VDDSYN is required for the VRC to operate within specification.
There are no power up/down sequencing requirements to prevent issues such as latch-up, excessive current
spikes, and so on. Therefore, the state of the I/O pins during power up and power down varies depending
on which supplies are powered.
Table 7 gives the pin state for the sequence cases for all pins with pad type pad_fc (fast type).
9 Values are based on I
DD from high-use applications as explained in the IDD Electrical Specification.
10 BETA is the worst-case external transistor BETA. It is measured on a per-part basis and calculated as (I
DD ÷ IVRCCTL).
Table 7. Pin Status for Fast Pads During the Power Sequence
VDDE
VDD33
VDD
POR
Pin Status for Fast Pad Output Driver
pad_fc (fast)
Low
—
Asserted
Low
VDDE
Low
Asserted
High
VDDE
Low
VDD
Asserted
High
VDDE
VDD33
Low
Asserted
High impedance (Hi-Z)
VDDE
VDD33
VDD
Asserted
Hi-Z
VDDE
VDD33
VDD
Negated
Functional
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
MPC551x
and
MPC5533
products
in
208
MAPBGA
packages;
MPC5534
and
MPC5553
products
in
208
and
496
MAPBGA
packages;
MPC5554,
MPC5565,
MPC5566
and
MPC5567
products
in
496
MAPBGA
packages
相關(guān)PDF資料 |
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|---|---|
| MPC5554MVR112R2 | MICROCONTROLLER, PBGA416 |
| MPC5554AVR132R2 | MICROCONTROLLER, PBGA416 |
| MPC5554MZP80R2 | 32-BIT, FLASH, 80 MHz, MICROCONTROLLER, PBGA416 |
| MPC5554AVR132 | 32-BIT, FLASH, 132 MHz, MICROCONTROLLER, PBGA416 |
| MPC5554MVR112 | 32-BIT, FLASH, 112 MHz, MICROCONTROLLER, PBGA416 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MPC5553MVR112R2 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontroller |
| MPC5553MVR132 | 功能描述:32位微控制器 - MCU MOCCASIN REVA Qorivva RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:90 MHz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT |
| MPC5553MVR132R2 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontroller |
| MPC5553MVR80 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontroller Data Sheet |
| MPC5553MVR80R2 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontroller |
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