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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： | 44/60页 |
| 文件大小： | 1107K |
| 代理商： | MCF54418CMJ250 |
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Electrical characteristics
MCF5441x ColdFire Microprocessor Data Sheet, Rev. 6
Preliminary—Subject to Change Without Notice
Freescale Semiconductor
49
Figure 31. MDIO serial management channel timing diagram
4.23
32-bit timer module timing specifications
Table 35 lists timer module AC timings.
4.24
DSPI timing specifications
The DMA Serial Peripheral Interface (DSPI) provides a synchronous serial bus with master and slave operations. Many of the
transfer attributes are programmable. Table 36 provides DSPI timing characteristics for classic SPI timing modes. Refer to the
DSPI chapter of the MCF54418 Reference Manual for information on the modified transfer formats used for communicating
with slower peripheral devices.
All DSPI signals use pad type pad_msr. The following timing specifications assume a pad slew rate setting of 11 and a load of
50 pF.1
Table 35. Timer module AC timing specifications
Name
Characteristic
Min
Max
Unit
T1
DTnIN cycle time (n =0:3)
3
—
1/fSYS/2
T2
DTnIN pulse width (n =0:3)
1
—
1/fSYS/2
1.These timing parameters are specified assuming maximum operating frequency and the fastest pad slew rate setting
(11). When operating this interface at lower frequencies, increase the slew rate by using the 10, 01, or 00 setting to
increase edge rise and fall times, thus reducing EMI.
Table 36. DSPI module AC timing specifications1
Name
Characteristic
Symbol
Min
Max
Unit
Notes
Master Mode
—
DSPI_SCK frequency
fSCK
—50
MHz
DS1
DSPI_SCK cycle time
tSCK
20
—
ns
2
DS2
DSPI_SCK duty cycle
—
(tsck 2) – 2.0
(tsck 2) + 2.0
ns
3
DS3
DSPI_PCSn to DSPI_SCK delay
tCSC
(tsck 2) – 2.0
—
ns
4
DS4
DSPI_SCK to DSPI_PCSn delay
tASC
(tsck 2) – 3.0
—
ns
5
DS5
DSPI_SCK to DSPI_SOUT valid
—
5
ns
MDC (Output)
E11
MDIO (Output)
MDIO (Input)
E11
E12
E13
Valid Data
E14
E15
Valid Data
E10
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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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