参数资料
型号: MCF52277CVM160
厂商: Freescale Semiconductor
文件页数: 32/46页
文件大小: 0K
描述: IC MCU 32BIT 166.67MHZ 196MAPBGA
产品培训模块: MCF5227x LCD Processors
标准包装: 126
系列: MCF5227x
核心处理器: Coldfire V2
芯体尺寸: 32-位
速度: 166.67MHz
连通性: CAN,EBI/EMI,I²C,SPI,SSI,UART/USART,USB OTG
外围设备: DMA,LCD,PWM,WDT
输入/输出数: 55
程序存储器类型: ROMless
RAM 容量: 128K x 8
电压 - 电源 (Vcc/Vdd): 1.4 V ~ 1.6 V
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 196-LBGA
包装: 托盘
MCF5227x ColdFire Microprocessor Data Sheet, Rev. 8
Electrical Characteristics
Freescale Semiconductor
38
5.14
DMA Timer Timing Specifications
Table 30 lists timer module AC timings.
5.15
DSPI Timing Specifications
The DMA Serial Peripheral Interface (DSPI) provides a synchronous serial bus with both master and slave operations. Many
of the transfer attributes are programmable. Table 31 provides DSPI timing characteristics for classic SPI timing modes. Refer
to the DSPI chapter of the MCF52277 Reference Manual for information on the modified transfer formats used for
communicating with slower peripheral devices.
Table 30. Timer Module AC Timing Specifications
Num
Characteristic
Min
Max
Unit
T1
DT0IN / DT1IN / DT2IN / DT3IN cycle time
3
tCYC
T2
DT0IN / DT1IN / DT2IN / DT3IN pulse width
1
tCYC
Table 31. DSPI Module AC Timing Specifications1
1 Timings shown are for DMCR[MTFE] = 0 (classic SPI) and DCTARn[CPHA] = 0. Data is sampled on the DSPI_SIN pin on the
odd-numbered DSPI_SCK edges and driven on the DSPI_SOUT pin on even-numbered DSPI edges.
Num
Characteristic
Symbol
Min
Max
Unit
Notes
DS1
DSPI_SCK Cycle Time
tSCK
4 x 1/fSYS
—ns
2
2 When in master mode, the baud rate is programmable in DCTARn[PBR] and DCTARn[BR].
DS2
DSPI_SCK Duty Cycle
(tsck
÷ 2) – 2.0
(tsck
÷ 2) + 2.0
ns
Master Mode
DS3
DSPI_PCSn to DSPI_SCK delay
tCSC
(2
× 1/f
SYS) – 2.0
ns
3
3 The DSPI_PCSn to DSPI_SCK delay is programmable in DCTARn[PCSSCK] and DCTARn[CSSCK].
DS4
DSPI_SCK to DSPI_PCSn delay
tASC
(2
× 1/f
SYS) – 3.0
ns
4
4 The DSPI_SCK to DSPI_PCSn delay is programmable in DCTARn[PASC] and DCTARn[ASC].
DS5
DSPI_SCK to DSPI_SOUT valid
5
ns
DS6
DSPI_SCK to DSPI_SOUT invalid
–5
ns
DS7
DSPI_SIN to DSPI_SCK input setup
9
ns
DS8
DSPI_SCK to DSPI_SIN input hold
0
ns
Slave Mode
DS9
DSPI_SCK to DSPI_SOUT valid
4
ns
DS10
DSPI_SCK to DSPI_SOUT invalid
0
ns
DS11
DSPI_SIN to DSPI_SCK input setup
2
ns
DS12
DSPI_SCK to DSPI_SIN input hold
7
ns
DS13
DSPI_SS active to DSPI_SOUT driven
20
ns
DS14
DSPI_SS inactive to DSPI_SOUT not driven
18
ns
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