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参数资料
| 型号： | MCF54418CMJ250 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | MICROPROCESSOR, PBGA256 |
| 封装： | 12 X 12 MM, ROHS COMPLAINT, MAPBGA-256 |
| 文件页数： | 17/60页 |
| 文件大小： | 1107K |
| 代理商： | MCF54418CMJ250 |
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MCF5441x ColdFire Microprocessor Data Sheet, Rev. 6
Preliminary—Subject to Change Without Notice
Electrical characteristics
Freescale Semiconductor
24
4.6
Output pad loading and slew rate
The output pins on the MCF5441x devices have programmable slew rates. Table 12 lists the rise/fall time for pins based on the
type of pad used for the signal, the value programmed into the appropriate field of the slew rate control registers, and capacitive
loading. Refer to Table 5 for a list of the external signals to pad connections.
NOTE
To allow the I/O interfaces to run at their maximum frequency, set their respective slew rate
select values to 11.
Selectable weak internal pull-up/pull-down device current1
IAPU
25
150
A
Input capacitance 2
All input-only pins
All input/output (three-state) pins
Cin
—
7
pF
Output loading for CMOS pads (EVDD and FBVDD domains)
Low drive
High drive
CL
50
200
pF
Output loading for SDRAMC pads (SDVDD domain)
Low drive
High drive
CL
5
50
pF
1
Refer to the signals section for pins having weak internal pull-up devices.
2
This parameter is characterized before qualification rather than 100% tested.
Table 12. Output pad slew rates
Pad type1
Slew rate select
field value
Drive load
(pF)
Rise/fall time
(ns)
ssr
11
50
2.2
200
6
10
50
22
200
28
01
50
42
200
50
00
50
210
200
220
Table 11. I/O electrical specifications (continued)
Characteristic
Symbol
Min
Max
Units
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCF54418CMJ250 | 制造商:Freescale Semiconductor 功能描述:IC 32-BIT MPU COLDFIRE 250MHZ 256-MA |
| MCF5441X | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:MCF5441x ColdFire Microprocessor Data Sheet |
| MCF54450 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ColdFire㈢ Microprocessor |
| MCF54450ACVM180 | 制造商:Freescale Semiconductor 功能描述:MCF5445X RISC 32-BIT 180MHZ 1.8V/2.5V/3.3V 256-PIN MA-BGA BR - Trays 制造商:Freescale Semiconductor 功能描述:MCF5445X V4M CORE, MMU, 制造商:Freescale 功能描述:MPU MCF5445X RISC 32-Bit 180MHz 1.8V/2.5V/3.3V 256-Pin MAP-BGA Brick |
| MCF54450AVM240 | 制造商:Freescale Semiconductor 功能描述:MCF5445X RISC 32-BIT 240MHZ 1.8V/2.5V/3.3V 256-PIN MA-BGA BR - Trays |
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