- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄359188 > MPC885 (飛思卡爾半導(dǎo)體(中國)有限公司) Hardware Specifications PDF資料下載
參數(shù)資料
| 型號： | MPC885 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | Hardware Specifications |
| 中文描述： | 硬件規(guī)格 |
| 文件頁數(shù)： | 15/92頁 |
| 文件大?。?/td> | 1499K |
| 代理商： | MPC885 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁當(dāng)前第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁
MPC885/MPC880 Hardware Specifications, Rev. 3
15
Freescale Semiconductor
Layout Practices
These cautions are necessary for the long-term reliability of the part. If they are violated, the electrostatic discharge
(ESD) protection diodes are forward-biased, and excessive current can flow through these diodes. If the system
power supply design does not control the voltage sequencing, the circuit shown
Figure 4
can be added to meet these
requirements. The MUR420 Schottky diodes control the maximum potential difference between the external bus and
core power supplies on power up, and the 1N5820 diodes regulate the maximum potential difference on power
down.
Figure 4. Example Voltage Sequencing Circuit
9
Layout Practices
Each V
DD
pin on the MPC885/880 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 by-pass capacitors
located as close as possible to the four sides of the package. Each board designed should be characterized and
additional appropriate decoupling capacitors should be used if required. 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. At a
minimum, a four-layer board employing two inner layers as V
DD
and GND planes should be used.
All output pins on the MPC885/880 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 buses. 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
DD
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. For more information, please refer to the
MPC885 User’s Manual
, Section 14.4.3, “Clock
Synthesizer Power (V
DDSYN
, V
SSSYN
, V
SSSYN1
)”.
10 Bus Signal Timing
The maximum bus speed supported by the MPC885/880 is 80 MHz. Higher-speed parts must be operated in
half-speed bus mode (for example, an MPC885/880 used at 133 MHz must be configured for a 66 MHz bus).
Table 7
shows the frequency ranges for standard part frequencies in 1:1 bus mode, and
Table 8
shows the frequency ranges
for standard part frequencies in 2:1 bus mode.
V
DDH
V
DDL
1N5820
MUR420
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MPC885ZP80 | Circular Connector; Body Material:Aluminum; Series:PT07; Number of Contacts:12; Connector Shell Size:14; Connecting Termination:Solder; Circular Shell Style:Jam Nut Receptacle; Circular Contact Gender:Socket |
| MPC885ZP66 | Circular Connector; Body Material:Aluminum; Series:PT07; No. of Contacts:41; Connector Shell Size:22; Connecting Termination:Solder; Circular Shell Style:Jam Nut Receptacle; Circular Contact Gender:Pin; Insert Arrangement:22-41 |
| MPC885CZP66 | PT 55C 55#20 PIN RECP |
| MPC885ZP133 | Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:PT07; No. of Contacts:4; Connector Shell Size:8; Connecting Termination:Solder; Circular Shell Style:Jam Nut Receptacle; Body Style:Straight |
| MPC885CZP133 | Hardware Specifications |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MPC885ADS | 功能描述:開發(fā)板和工具包 - 其他處理器 DUET885 RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓: |
| MPC885ADSE | 功能描述:開發(fā)板和工具包 - 其他處理器 DUET885 RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓: |
| MPC885CVR133 | 功能描述:微處理器 - MPU 133 MHz 176 MIPS 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 |
| MPC885CVR133 | 制造商:Freescale Semiconductor 功能描述:IC 32-BIT MPU 133MHZ 357-PBGA |
| MPC885CVR66 | 功能描述:微處理器 - MPU 66 MHz 87 MIPS 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。