參數(shù)資料
型號: MCF54415CMJ250
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: MICROPROCESSOR, PBGA256
封裝: 12 X 12 MM, ROHS COMPLAINT, MAPBGA-256
文件頁數(shù): 18/60頁
文件大?。?/td> 1107K
代理商: MCF54415CMJ250
Electrical characteristics
MCF5441x ColdFire Microprocessor Data Sheet, Rev. 6
Preliminary—Subject to Change Without Notice
Freescale Semiconductor
25
4.7
DDR pad drive strengths
The DDR pins on the MCF5441x devices have programmable drive strengths. Table 13 lists the drive strengths for pins based
on the value programmed into the appropriate field of the drive strength control register. Refer to Table 5 for a list of the external
signals to pad connections.
NOTE
For a single device drive, this setting should be 10 to enable Full Strength mode. High
Strength is intended for multiple device drives (DIMM).
msr
11
50
1.2
200
6
10
50
9
200
14
01
50
17
200
23
00
50
110
200
120
fsr
11
50
1.1
200
2.6
10
50
2.4
200
5
01
50
5
200
8
00
50
16
200
21
1 The ae pads are used for USB communication and are governed by usb.org
specifications. They are not included in this table.
Table 13. DDR pad drive strengths
Pad type
Drive strength select
field value
Drive strength
st
11
DDR2 High Strength
10
DDR2 Full Strength
01
Not supported
00
Not supported
Table 12. Output pad slew rates (continued)
Pad type1
Slew rate select
field value
Drive load
(pF)
Rise/fall time
(ns)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCF54415CMJ250 制造商:Freescale Semiconductor 功能描述:IC 32-BIT MCU COLDFIRE 250MHZ 256-MA
MCF54416CMJ250 功能描述:微處理器 - MPU COLDFIREV4M CORE C90LP 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
MCF54416CMJ250 制造商:Freescale Semiconductor 功能描述:IC 32-BIT MPU COLDFIRE 250MHZ 256-MA
MCF54417CMJ250 功能描述:微處理器 - MPU COLDFIREV4M CORE C90LP 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
MCF54417CMJ250 制造商:Freescale Semiconductor 功能描述:IC 32-BIT MPU COLDFIRE 250MHZ 256-MA