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參數資料
| 型號： | MPC7410RX400LD |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, 400 MHz, RISC PROCESSOR, CBGA360 |
| 封裝： | 25 X 25 MM, 3.20 MM HEIGHT, 1.27 MM PITCH, CERAMIC, BGA-360 |
| 文件頁數： | 29/52頁 |
| 文件大?。?/td> | 943K |
| 代理商： | MPC7410RX400LD |
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MOTOROLA
MPC7410 RISC Microprocessor Hardware Specifications
35
System Design Information
1.8.5
Output Buffer DC Impedance
The MPC7410 60x and L2 I/O drivers are characterized over process, voltage, and temperature. To measure
Z0, an external resistor is connected from the chip pad to OVDD or GND. Then, the value of each resistor is
The output impedance is the average of two components, the resistances of the pull-up and pull-down
devices. When data is held low, SW2 is closed (SW1 is open), and RN is trimmed until the voltage at the
pad equals (L2)OVDD/2. RN then becomes the resistance of the 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 (L2)OVDD/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 21 describes the driver impedance measurement circuit described above.
Figure 21. Driver Impedance Measurement Circuit
Alternately, the following is another method to determine the output impedance of the MPC7410. A voltage
source, Vforce, is connected to the output of the MPC7410, as in Figure 22. Data is held low, the voltage
source is set to a value that is equal to (L2)OVDD/2, and the current sourced by Vforce is measured. The
voltage drop across the pull-down device, which is equal to (L2)OVDD/2, is divided by the measured current
to determine the output impedance of the pull-down device, RN. Similarly, the impedance of the pull-up
device is determined by dividing the voltage drop of the pull-up, (L2)OVDD/2, by the current sank by the
pull-up when the data is high and Vforce is equal to (L2)OVDD/2. This method can be employed with either
empirical data from a test setup or with data from simulation models, such as IBIS.
OVDD
OGND
RP
RN
Pad
Data
SW1
SW2
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MPC7410RX400LE | 功能描述:微處理器 - MPU REV 1.4 1.8+/-.05V 105C RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數據總線寬度:32 bit 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數據 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 |
| MPC7410RX400NE | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:MPC7410 RISC Microprocessor Hardware Specifications Addendum |
| MPC7410RX450NE | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:MPC7410 RISC Microprocessor Hardware Specifications Addendum |
| MPC7410RX500LE | 功能描述:IC MPU 32BIT 500MHZ PPC 360-CBGA RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微處理器 系列:MPC74xx 標準包裝:2 系列:MPC8xx 處理器類型:32-位 MPC8xx PowerQUICC 特點:- 速度:133MHz 電壓:3.3V 安裝類型:表面貼裝 封裝/外殼:357-BBGA 供應商設備封裝:357-PBGA（25x25） 包裝:托盤 |
| MPC7410THX400LE | 功能描述:微處理器 - MPU NT HITCE RV1.4 1.8V -40C RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數據總線寬度:32 bit 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數據 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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