Table 24. SSI timing — mast" />
參數(shù)資料
型號(hào): MCF54418CMJ250
廠商: Freescale Semiconductor
文件頁數(shù): 38/61頁
文件大?。?/td> 0K
描述: IC MCU 32BIT 256MAPBGA
標(biāo)準(zhǔn)包裝: 450
系列: MCF5441x
核心處理器: Coldfire V4
芯體尺寸: 32-位
速度: 250MHz
連通性: 1 線,CAN,EBI/EMI,以太網(wǎng),I²C,智能卡,SPI,SSI,UART/USART,USB,USB OTG
外圍設(shè)備: DMA,PWM,WDT
輸入/輸出數(shù): 87
程序存儲(chǔ)器類型: ROMless
RAM 容量: 64K x 8
電壓 - 電源 (Vcc/Vdd): 1.14 V ~ 1.32 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x12b,D/A 2x12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 256-LBGA
包裝: 托盤
Electrical characteristics
MCF5441x ColdFire Microprocessor Data Sheet, Rev. 8
Freescale Semiconductor
43
Table 24. SSI timing — master modes1
1 All timings specified with a capacitive load of 25pF.
Num
Description
Symbol
Min
Max
Units
Notes
S1
SSI_MCLK cycle time
tMCLK
15.15
ns
2
2 SSI_MCLK can be generated from SSI_CLKIN or a divided version of the internal system clock (f
sys).
S2
SSI_MCLK pulse width high / low
45%
55%
tMCLK
S3
SSI_BCLK cycle time
tBCLK
80
ns
3
3 SSI_BCLK can be derived from SSI_CLKIN or a divided version of the internal system clock (f
sys).
S4
SSI_BCLK pulse width
45%
55%
tBCLK
S5
SSI_BCLK to SSI_FS output valid
15
ns
S6
SSI_BCLK to SSI_FS output invalid
0
ns
S7
SSI_BCLK to SSI_TXD valid
15
ns
S8
SSI_BCLK to SSI_TXD invalid / high impedance
0
ns
S9
SSI_RXD / SSI_FS input setup before SSI_BCLK
15
ns
S10
SSI_RXD / SSI_FS input hold after SSI_BCLK
0
ns
Table 25. SSI timing — slave modes1
1 All timings specified with a capacitive load of 25pF.
Num
Description
Symbol
Min
Max
Units
Notes
S11
SSI_BCLK cycle time
tBCLK
80
ns
S12
SSI_BCLK pulse width high / low
45%
55%
tBCLK
S13
SSI_FS input setup before SSI_BCLK
10
ns
S14
SSI_FS input hold after SSI_BCLK
2
ns
S15
SSI_BCLK to SSI_TXD / SSI_FS output valid
15
ns
S16
SSI_BCLK to SSI_TXD / SSI_FS output invalid / high
impedance
0—
ns
S17
SSI_RXD setup before SSI_BCLK
15
ns
S18
SSI_RXD hold after SSI_BCLK
2
ns
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