参数资料
型号: MC56F8014VFAE
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 数字信号处理
英文描述: 0-BIT, 8 MHz, OTHER DSP, PQFP32
封装: ROHS COMPLIANT, PLASTIC, LQFP-32
文件页数: 12/124页
文件大小: 1681K
代理商: MC56F8014VFAE
Inter-Integrated Circuit Interface (I2C) Timing
56F8014 Technical Data, Rev. 11
Freescale Semiconductor
109
10.12 Inter-Integrated Circuit Interface (I2C) Timing
Table 10-17 I2C Timing
Characteristic
Symbol
Standard Mode
Fast Mode
Unit
MinimumMaximumMinimum
Maximum
SCL Clock Frequency
fSCL
0
100
0
400
kHz
Hold time (repeated ) START
condition. After this period, the
first clock pulse is generated.
tHD; STA
4.0
0.6
μs
LOW period of the SCL clock
tLOW
4.7
1.25
μs
HIGH period of the SCL clock
tHIGH
4.0
0.6
μs
Set-up time for a repeated START
condition
tSU; STA
4.7
0.6
μs
Data hold time for I2C bus devices
tHD; DAT
01
1. A device must internally provide a hold time of at least 300ns for the SDA signal (referred to the VIH min of the SCL signal) to
bridge the undefined region of the falling edge of SCL.
3.452
2. The maximum tHD; DAT has only to be met if the device does not stretch the LOW period (tLOW) of the SCL signal.
01
0.92
μs
Data set-up time
tSU; DAT
250
1003
3. A Fast mode I2C bus device can be used in a Standard mode I2C bus system, but the requirement tSU; DAT > = 250ns must then
be met. This will automatically be the case if the device does not stretch the LOW period of the SCL signal. If such a device does
stretch the LOW period of the SCL signal, it must output the next data bit to the SDA line
trmax + tSU; DAT = 1000 + 250 = 1250ns (according to the Standard mode I
2C bus specification) before the SCL line is released.
ns
Rise time of both SDA and SCL
signals
tr
1000
2 +0.1Cb
4
4. Cb = total capacitance of the one bus line in pF.
300
ns
Fall time of both SDA and SCL
signals
tf
300
2 +0.1Cb
4
300
ns
Set-up time for STOP condition
tSU; STO
4.0
0.6
μs
Bus free time between STOP and
START condition
tBUF
4.7
1.3
μs
Pulse width of spikes that must be
suppressed by the input filter
tSP
N/A
0.0
50
ns
相关PDF资料
PDF描述
MC56F8037VLH 16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP64
MC56F8145VFG 4-BIT, 120 MHz, OTHER DSP, PQFP128
MC56F8146VFVE 16-BIT, 120 MHz, OTHER DSP, PQFP144
MC56F8146VFV 16-BIT, 120 MHz, OTHER DSP, PQFP144
MC56F8167VPYE 16-BIT, 120 MHz, OTHER DSP, PQFP160
相关代理商/技术参数
参数描述
MC56F8023 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers
MC56F8023VLC 功能描述:数字信号处理器和控制器 - DSP, DSC 16 BIT DSPHC RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT
MC56F8025 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers
MC56F8025E 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Digital Signal Controller Product Brief
MC56F8025MLD 功能描述:数字信号处理器和控制器 - DSP, DSC 16 BIT DSPHC RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT