參數(shù)資料
型號(hào)： KMPC857TCVR80B
廠商： Freescale Semiconductor
文件頁(yè)數(shù)： 7/88頁(yè)
文件大小： 0K
描述： IC MPU POWERQUICC 80MHZ 357-PBGA
標(biāo)準(zhǔn)包裝： 2
系列： MPC8xx
處理器類(lèi)型： 32-位 MPC8xx PowerQUICC
速度： 80MHz
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)
MPC862/857T/857DSL PowerQUICC Family Hardware Specifications, Rev. 3
Freescale Semiconductor
15
Layout Practices
7.6
References
Semiconductor Equipment and Materials International
(415) 964-5111
805 East Middlefield Rd.
Mountain View, CA 94043
MIL-SPEC and EIA/JESD (JEDEC) Specifications
800-854-7179 or
(Available from Global Engineering Documents)
303-397-7956
JEDEC Specifications
http://www.jedec.org
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. 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.
8
Layout Practices
Each VCC pin on the MPC862/857T/857DSL 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
CC power supply should be bypassed to ground
using at least four 0.1 F by-pass 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
CC 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 VCC and GND planes.
All output pins on the MPC862/857T/857DSL 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 six 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.
9
Bus Signal Timing
The maximum bus speed supported by the MPC862/857T/857DSL is 66 MHz. Higher-speed parts must
be operated in half-speed bus mode (for example, an MPC862/857T/857DSL used at 80MHz must be
configured for a 40 MHz bus). Table 6 shows the period ranges for standard part frequencies.
Table 6. Period Range for Standard Part Frequencies
Freq
50 MHz
66 MHz
80 MHz
100 MHz
Min
Max
Min
Max
Min
Max
Min
Max
Period
20.00
30.30
15.15
30.30
25.00
30.30
20.00
30.30
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KMPC857TCVR66B IC MPU POWERQUICC 66MHZ 357-PBGA
KMPC857DSLZQ66B IC MPU POWERQUICC 66MHZ 357-PBGA
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KMPC857TVR100B 功能描述:微處理器 - MPU POWER QUICC NO PB 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
KMPC857TZQ100B 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(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
KMPC859DSLCVR66A 功能描述:微處理器 - MPU PQ I HIP6W NO-PB 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
KMPC859DSLCZP66A 功能描述:微處理器 - MPU POWER QUICC I HIP6W 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
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