Input Value of Pins During POR" />
參數(shù)資料
型號: MPC5553MVZ132
廠商: Freescale Semiconductor
文件頁數(shù): 6/68頁
文件大小: 0K
描述: MCU 1.5MB FLASH 132MHZ 324-PBGA
標(biāo)準(zhǔn)包裝: 60
系列: MPC55xx Qorivva
核心處理器: e200z6
芯體尺寸: 32-位
速度: 132MHz
連通性: CAN,EBI/EMI,以太網(wǎng),SCI,SPI
外圍設(shè)備: DMA,POR,PWM,WDT
輸入/輸出數(shù): 220
程序存儲器容量: 1.5MB(1.5M x 8)
程序存儲器類型: 閃存
RAM 容量: 64K x 8
電壓 - 電源 (Vcc/Vdd): 1.35 V ~ 1.65 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 40x12b
振蕩器型: 外部
工作溫度: -40°C ~ 125°C
封裝/外殼: 324-BBGA
包裝: 托盤
MPC5553 Microcontroller Data Sheet, Rev. 4
Electrical Characteristics
Freescale Semiconductor
14
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
相關(guān)PDF資料
PDF描述
MPC5553MZQ132 IC MCU MPC5553 REV A 324-PBGA
MC68332AVEH16 IC MCU 32BIT 16MHZ 132-PQFP
MCF5274CVM166 IC MCU 32BIT 166MHZ 256-MAPBGA
MCF5281CVM80 IC MPU 32BIT COLDF 256-MAPBGA
S912XEP100J5MAL MCU 16BIT 1M FLASH 112LQFP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MPC5553MVZ132R2 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontroller
MPC5553MVZ80 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontroller Data Sheet
MPC5553MVZ80R2 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontroller
MPC5553MZP112 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontroller Data Sheet
MPC5553MZP112R2 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontroller