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參數(shù)資料
| 型號(hào)： | MPC855T |
| 廠商： | Motorola, Inc. |
| 英文描述： | Family Hardware Specifications |
| 中文描述： | 家庭硬件規(guī)格 |
| 文件頁數(shù)： | 13/76頁 |
| 文件大?。?/td> | 857K |
| 代理商： | MPC855T |
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MOTOROLA
MPC860 Family Hardware Specifications
13
References
7.6
References
Semiconductor Equipment and Materials International
805 East Middlefield Rd
Mountain View, CA 94043
MIL-SPEC and EIA/JESD (JEDEC) specifications
(Available from Global Engineering Documents)
JEDEC Specifications
1. 1. C.E. Triplett and B. Joiner, “An Experimental Characterization of a 272 PBGA
Within an Automotive Engine Controller Module,” Proceedings of SemiTherm, San
Diego, 1998, pp. 47
–
54.
2. 2. B. Joiner and V. Adams, “Measurement and Simulation of Junction to Board
Thermal Resistance and Its Application in Thermal Modeling,” Proceedings of
SemiTherm, San Diego, 1999, pp. 212
–
220.
(415) 964-5111
800-854-7179 or
303-397-7956
http://www.jedec.org
Part VIII Layout Practices
Each V
DD
pin on the MPC860 should be provided with a low-impedance path to the board’s
supply. Each GND pin should likewise be provided with a low-impedance path to ground.
The power supply pins drive distinct groups of logic on chip. The V
DD
power supply should
be bypassed to ground using at least four 0.1 μF-bypass capacitors located as close as
possible to the four sides of the package. The capacitor leads and associated printed circuit
traces connecting to chip V
DD
and GND should be kept to less than half an inch per
capacitor lead. A four-layer board is recommended, employing two inner layers as V
CC
and
GND planes.
All output pins on the MPC860 have fast rise and fall times. Printed circuit (PC) trace
interconnection length should be minimized in order to minimize undershoot and
reflections caused by these fast output switching times. This recommendation particularly
applies to the address and data busses. Maximum PC trace lengths of 6 inches are
recommended. Capacitance calculations should consider all device loads as well as
parasitic capacitances due to the PC traces. Attention to proper PCB layout and bypassing
becomes especially critical in systems with higher capacitive loads because these loads
create higher transient currents in the V
CC
and GND circuits. Pull up all unused inputs or
signals that will be inputs during reset. Special care should be taken to minimize the noise
levels on the PLL supply pins.
Part IX Bus Signal Timing
Table 9-6 provides the bus operation timing for the MPC860 at 33, 40, 50, and 66 MHz.
The maximum bus speed supported by the MPC860 is 66 MHz. Higher-speed parts must
be operated in half-speed bus mode (for example, an MPC860 used at 80 MHz must be
configured for a 40 MHz bus).
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| MPC860DE | Family Hardware Specifications |
| MPC860DP | Family Hardware Specifications |
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| MPC860EN | Family Hardware Specifications |
| MPC860P | Family Hardware Specifications |
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| MPC855TCVR66D4 | 功能描述:微處理器 - MPU POWER QUICC-NO LEAD 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 |
| MPC855TCZP50D4 | 制造商:Freescale Semiconductor 功能描述: |
| MPC855TCZQ50D4 | 功能描述:微處理器 - MPU POWER QUICC 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 |
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