參數資料
型號: MCF54450VM180
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 180 MHz, RISC PROCESSOR, BGA256
封裝: 17 X 17 MM, ROHS COMPLIANT, MAPBGA-256
文件頁數: 26/48頁
文件大?。?/td> 942K
代理商: MCF54450VM180
MCF5445x ColdFire Microprocessor Data Sheet, Rev. 4
Electrical Characteristics
Freescale Semiconductor
32
Figure 17. SSI Timing — Slave Modes
5.12
I2C Timing Specifications
Table 18 lists specifications for the I2C input timing parameters shown in Figure 18.
Table 19 lists specifications for the I2C output timing parameters shown in Figure 18.
Table 18. I2C Input Timing Specifications between SCL and SDA
Num
Characteristic
Min
Max
Units
I1
Start condition hold time
2
tSYS
I2
Clock low period
8
tSYS
I3
I2C_SCL/I2C_SDA rise time (VIL = 0.5 V to VIH =2.4 V)
1
ms
I4
Data hold time
0
ns
I5
I2C_SCL/I2C_SDA fall time (VIH = 2.4 V to VIL =0.5 V)
1
ms
I6
Clock high time
4
tSYS
I7
Data setup time
0
ns
I8
Start condition setup time (for repeated start condition only)
2
tSYS
I9
Stop condition setup time
2
tSYS
Table 19. I2C Output Timing Specifications between SCL and SDA
Num
Characteristic
Min
Max
Units
I11
Start condition hold time
6
tSYS
I21
Clock low period
10
tSYS
I32
I2C_SCL/I2C_SDA rise time (VIL = 0.5 V to VIH =2.4 V)
s
I41
Data hold time
7
tSYS
I53
I2C_SCL/I2C_SDA fall time (VIH = 2.4 V to VIL = 0.5 V)
3
ns
SSI_BCLK
(Input)
SSI_FS
(Input)
SSI_TXD
SSI_RXD
S11
S12
S14
S15
S16
S17
S18
S15
S13
SSI_FS
(Output)
S15
S16
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