參數(shù)資料
型號： KMPC8314CVRAGDA
廠商： Freescale Semiconductor
文件頁數(shù)： 99/101頁
文件大小： 0K
描述： IC MPU POWERQUICC II 620-PBGA
標準包裝： 2
系列： MPC83xx
處理器類型： 32-位 MPC83xx PowerQUICC II Pro
速度： 400MHz
電壓： 1V
安裝類型： 表面貼裝
封裝/外殼： 620-BBGA 裸露焊盤
供應商設備封裝： 620-PBGA（29x29）
包裝： 托盤
MPC8314E PowerQUICC II Pro Processor Hardware Specifications, Rev. 2
Freescale Semiconductor
97
System Design Information
Power and ground connections must be made to all external VDD, GVDD, LVDD, NVDD, and GND pins
of the device.
25.5
Output Buffer DC Impedance
The MPC8314E drivers are characterized over process, voltage, and temperature. For all buses, the driver
is a push-pull single-ended driver type (open drain for I2C).
To measure Z0 for the single-ended drivers, an external resistor is connected from the chip pad to NVDD
or GND. Then, the value of each resistor is varied until the pad voltage is NVDD/2 (see Figure 62). The
output impedance is the average of two components, the resistances of the pull-up and pull-down devices.
When data is held high, SW1 is closed (SW2 is open) and RP is trimmed until the voltage at the pad equals
NVDD/2. RP then becomes the resistance of the pull-up devices. RP and RN are designed to be close to
each other in value. Then, Z0 = (RP + RN)/2.
Figure 62. Driver Impedance Measurement
The value of this resistance and the strength of the driver’s current source can be found by making two
measurements. First, the output voltage is measured while driving logic 1 without an external differential
termination resistor. The measured voltage is V1 = Rsource Isource. Second, the output voltage is measured
while driving logic 1 with an external precision differential termination resistor of value Rterm. The
measured voltage is V2 =(1/(1/R1 +1/R2)) Isource. Solving for the output impedance gives Rsource =
Rterm (V1/V2 – 1). The drive current is then Isource =V1/Rsource.
NVDD
OGND
RP
RN
Pad
Data
SW1
SW2
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相關代理商/技術參數(shù)
參數(shù)描述
KMPC8314ECVRAGDA 功能描述:微處理器 - MPU ENCRYPT 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 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型: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 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
KMPC8314EVRAGDA 功能描述:微處理器 - MPU ENCRYPT 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 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型: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 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
KMPC8314VRAGDA 功能描述:微處理器 - MPU NON-ENCRYPT 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 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型: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 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
KMPC8315CVRAGDA 功能描述:微處理器 - MPU NON-ENCRYPT 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 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型: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 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
KMPC8315ECVRAGDA 功能描述:微處理器 - MPU ENCRYPT 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 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型: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 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
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