參數(shù)資料
型號(hào): MPC8540CVTAQFB
廠(chǎng)商: FREESCALE SEMICONDUCTOR INC
元件分類(lèi): 微控制器/微處理器
英文描述: 32-BIT, 667 MHz, MICROPROCESSOR, PBGA783
封裝: 29 X 29 MM, 3.75 MM HEIGHT, 1 MM PITCH, LEAD FREE, FLIP CHIP, PLASTIC, BGA-783
文件頁(yè)數(shù): 96/104頁(yè)
文件大小: 1353K
代理商: MPC8540CVTAQFB
MPC8540 Integrated Processor Hardware Specifications, Rev. 4
Freescale Semiconductor
91
System Design Information
Figure 52. Driver Impedance Measurement
The output impedance of the RapidIO port drivers targets 200-
Ω differential resistance. 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.
Table 60 summarizes the signal impedance targets. The driver impedance are targeted at minimum VDD,
nominal OVDD, 105°C.
17.6 Configuration Pin Muxing
The MPC8540 provides the user with power-on configuration options which can be set through the use of
external pull-up or pull-down resistors of 4.7 k
Ω on certain output pins (see customer visible configuration
pins). These pins are generally used as output only pins in normal operation.
Table 60. Impedance Characteristics
Impedance
Local Bus, Ethernet,
DUART, Control,
Configuration, Power
Management
PCI/PCI-X
DDR DRAM
RapidIO
Symbol
Unit
RN
43 Target
25 Target
20 Target
NA
Z0
W
RP
43 Target
25 Target
20 Target
NA
Z0
W
Differential
NA
200 Target
ZDIFF
W
Note: Nominal supply voltages. See Table 1, Tj = 105°C.
OVDD
OGND
RP
RN
Pad
Data
SW1
SW2
相關(guān)PDF資料
PDF描述
MPC8540CVT833LC 32-BIT, 667 MHz, MICROPROCESSOR, PBGA783
MPC8540CPXAQFB 32-BIT, 667 MHz, MICROPROCESSOR, PBGA783
MPC8540CVT833JB 32-BIT, 667 MHz, MICROPROCESSOR, PBGA783
MPC8540PXALDB 32-BIT, 667 MHz, MICROPROCESSOR, PBGA783
MPC8540PXAPDB 32-BIT, 833 MHz, MICROPROCESSOR, PBGA783
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MPC8540PX533JB 功能描述:微處理器 - MPU PQ 3 8540-DRACOM RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線(xiàn)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
MPC8540PX667LB 功能描述:微處理器 - MPU PQ 3 8540-DRACOM RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線(xiàn)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
MPC8540PX667LC 功能描述:微處理器 - MPU PQ 3 8540-DRACOM RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線(xiàn)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
MPC8540PX833LB 功能描述:微處理器 - MPU PQ 3 8540-DRACOM RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線(xiàn)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
MPC8540PX833LC 功能描述:微處理器 - MPU PQ 3 8540-DRACOM RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線(xiàn)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