参数资料
型号: MCF54453CVR200
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 200 MHz, RISC PROCESSOR, PBGA360
封装: 23 X 23 MM, ROHS COMPLIANT, TEPBGA-360
文件页数: 32/48页
文件大小: 945K
代理商: MCF54453CVR200
MCF5445x ColdFire Microprocessor Data Sheet, Rev. 6
Electrical Characteristics
Freescale Semiconductor
38
Figure 24. DSPI Classic SPI Timing — Slave Mode
5.17
SBF Timing Specifications
The Serial Boot Facility (SBF) provides a means to read configuration information and system boot code from a broad array of
SPI-compatible EEPROMs, flashes, FRAMs, nVSRAMs, etc. Table 27 provides the AC timing specifications for the SBF.
Table 27. SBF AC Timing Specifications
Name
Characteristic
Symbol
Min
Max
Unit
Notes
SB1
SBF_CK Cycle Time
tSBFCK
40
ns
1
1 At reset, the SBF_CK cycle time is t
REF × 67. The first byte of data read from the serial memory contains a divider value
that is used to set the SBF_CK cycle time for the duration of the serial boot process.
SB2
SBF_CK High/Low Time
30%
tSBFCK
SB3
SBF_CS to SBF_CK delay
tSBFCK - 2.0
ns
SB4
SBF_CK to SBF_CS delay
tSBFCK - 2.0
ns
SB5
SBF_CK to SBF_DO valid
-5
ns
SB6
SBF_CK to SBF_DO invalid
5
ns
SB7
SBF_DI to SBF_SCK input setup
10
ns
SB8
SBF_CK to SBF_DI input hold
0
ns
DSPI_SS
DSPI_SCK
DSPI_SOUT
DSPI_SIN
DSPI_SCK
(DCTARn[CPOL] = 1)
(DCTARn[CPOL] = 0)
Last Data
First Data
Data
First Data
Last Data
DS1
DS2
DS9
DS10
DS11
DS12
DS13
DS14
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