參數(shù)資料
型號(hào): KMC7448VU1267ND
廠商: Freescale Semiconductor
文件頁(yè)數(shù): 33/60頁(yè)
文件大?。?/td> 0K
描述: IC MPU RISC 32BIT 360-FCCBGA
標(biāo)準(zhǔn)包裝: 1
系列: MPC74xx
處理器類(lèi)型: 32-位 MPC74xx PowerPC
速度: 1.267GHz
電壓: 1.05V
安裝類(lèi)型: 表面貼裝
封裝/外殼: 360-CBGA,F(xiàn)CCBGA
供應(yīng)商設(shè)備封裝: 360-FCCBGA(25x25)
包裝: 托盤(pán)
MPC7448 RISC Microprocessor Hardware Specifications, Rev. 4
Freescale Semiconductor
39
System Design Information
Figure 17. MPC7448 Power Down Sequencing Requirements
There is no requirement regarding AVDD during power down, but it is recommended that AVDD track VDD
within the RC time constant of the PLL filter circuit described in Section 9.2.2, “PLL Power Supply
Filtering” (nominally 100 s).
9.2.2
PLL Power Supply Filtering
The AVDD power signal is provided on the MPC7448 to provide power to the clock generation PLL. To
ensure stability of the internal clock, the power supplied to the AVDD input signal should be filtered of any
noise in the 500-KHz to 10-MHz resonant frequency range of the PLL. The circuit shown in Figure 18
using surface mount capacitors with minimum effective series inductance (ESL) is strongly recommended.
In addition to filtering noise from the AVDD input, it also provides the required delay between VDD and
The circuit should be placed as close as possible to the AVDD pin to minimize noise coupled from nearby
circuits. It is often possible to route directly from the capacitors to the AVDD pin, which is on the periphery
of the device footprint.
Figure 18. PLL Power Supply Filter Circuit
VDD
OVDD
no restrictions between VDD and OVDD
SYSCLK
0.9 V
AVDD
no restrictions between VDD and AVDD
note also restrictions between SYSCLK and OVDD
0.9 V
limit imposed by VDD if VDD ramps down first
limit imposed by OVDD if OVDD ramps down first
VDD
AVDD
10
Ω
2.2 F
GND
Low ESL Surface Mount Capacitors
相關(guān)PDF資料
PDF描述
KMC755CVT400LE IC MPU 32BIT 400MHZ 360-FCPBGA
KMPC823ZQ75B2T IC MPU PWRQUICC 75MHZ 256-PBGA
KMPC8241TVR166D IC MPU 32BIT 166MHZ 357-PBGA
KMPC8241TZQ200D IC MPU 32BIT 200MHZ 357-PBGA
KMPC8245ARZU400D IC MPU 32BIT 400MHZ 352-TBGA
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
KMC7448VU1400NC 功能描述:IC MPU 128BIT 1400MHZ 360-FCCBGA RoHS:否 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微處理器 系列:MPC74xx 標(biāo)準(zhǔn)包裝:2 系列:MPC8xx 處理器類(lèi)型:32-位 MPC8xx PowerQUICC 特點(diǎn):- 速度:133MHz 電壓:3.3V 安裝類(lèi)型:表面貼裝 封裝/外殼:357-BBGA 供應(yīng)商設(shè)備封裝:357-PBGA(25x25) 包裝:托盤(pán)
KMC7448VU1400ND 功能描述:微處理器 - MPU APL8 RV2.2.1 1.15V 105C RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類(lèi)型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
KMC7448VU1700LC 功能描述:IC MPU 128BIT 1700MHZ 360-FCCBGA RoHS:否 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微處理器 系列:MPC74xx 標(biāo)準(zhǔn)包裝:2 系列:MPC8xx 處理器類(lèi)型:32-位 MPC8xx PowerQUICC 特點(diǎn):- 速度:133MHz 電壓:3.3V 安裝類(lèi)型:表面貼裝 封裝/外殼:357-BBGA 供應(yīng)商設(shè)備封裝:357-PBGA(25x25) 包裝:托盤(pán)
KMC7448VU1700LD 功能描述:微處理器 - MPU APL8 RV2.2.1 1.3V 105C RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類(lèi)型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
KMC7457RX1000NB 制造商:Freescale Semiconductor 功能描述: