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参数资料
| 型号： | MCF52256CAG66 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, FLASH, 66 MHz, RISC MICROCONTROLLER, PQFP144 |
| 封装： | 20 X 20 MM, ROHS COMPLIANT, LQFP-144 |
| 文件页数： | 31/46页 |
| 文件大小： | 560K |
| 代理商： | MCF52256CAG66 |
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MCF52259 ColdFire Microcontroller, Rev. 4
Electrical Characteristics
Freescale Semiconductor
37
2.14
I2C Input/Output Timing Specifications
Table 23. I2C Input Timing Specifications between I2C_SCL and I2C_SDA
Num
Characteristic
Min
Max
Units
11
Start condition hold time
2
t
CYC
—ns
I2
Clock low period
8
t
CYC
—ns
I3
SCL/SDA rise time (VIL = 0.5 V to VIH = 2.4 V)
—
1
ms
I4
Data hold time
0
—
ns
I5
SCL/SDA fall time (VIH = 2.4 V to VIL = 0.5 V)
—
1
ms
I6
Clock high time
4
t
CYC
—ns
I7
Data setup time
0
—
ns
I8
Start condition setup time (for repeated start condition only)
2
t
CYC
—ns
I9
Stop condition setup time
2
t
CYC
—ns
Table 24. I2C Output Timing Specifications between I2C_SCL and I2C_SDA
Num
Characteristic
Min
Max
Units
111
1 Output numbers depend on the value programmed into the IFDR; an IFDR programmed with the
interface is designed to scale the actual data transition time to move it to the middle of the SCL low
period. The actual position is affected by the prescale and division values programmed into the IFDR;
however, the numbers given in Table 24 are minimum values.
Start condition hold time
6
t
CYC
—ns
Clock low period
10
t
CYC
—ns
I32
2 Because SCL and SDA are open-collector-type outputs, which the processor can only actively drive
low, the time SCL or SDA take to reach a high level depends on external signal capacitance and pull-up
resistor values.
I2C_SCL/I2C_SDA rise time
(VIL = 0.5 V to VIH = 2.4 V)
——
s
Data hold time
7
t
CYC
—ns
I53
3 Specified at a nominal 50-pF load.
I2C_SCL/I2C_SDA fall time
(VIH = 2.4 V to VIL = 0.5 V)
—3
ns
Clock high time
10
t
CYC
—ns
Data setup time
2
t
CYC
—ns
Start condition setup time (for repeated start
condition only)
20
t
CYC
—ns
Stop condition setup time
10
t
CYC
—ns
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCF52256CAG66 | 制造商:Freescale Semiconductor 功能描述:IC 32BIT MCU COLDFIRE/68K 66MHZ LQFP-144 |
| MCF52256CVN66 | 功能描述:32位微控制器 - MCU KIRN3 144MAPBGA RoHS:否 制造商:Texas Instruments 核心:C28x 处理器系列:TMS320F28x 数据总线宽度:32 bit 最大时钟频率:90 MHz 程序存储器大小:64 KB 数据 RAM 大小:26 KB 片上 ADC:Yes 工作电源电压:2.97 V to 3.63 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:LQFP-80 安装风格:SMD/SMT |
| MCF52256CVN66 | 制造商:Freescale Semiconductor 功能描述:32-bit Microcontroller IC |
| MCF52256CVN66J | 制造商:Freescale Semiconductor 功能描述:32-BIT MCF5225X COLDFIRE RISC 256KB FLASH 3.3V 144-PIN MA-B - Bulk |
| MCF52256VN80 | 制造商:Freescale Semiconductor 功能描述:MCU 32BIT V2 RISC 256KB FLASH 3.3V 144MAPBGA - Trays 制造商:Freescale Semiconductor 功能描述:MCU 32BIT COLDFIRE V2 144MAPBGA 制造商:Freescale Semiconductor 功能描述:32-bit Microcontroller IC 制造商:Freescale Semiconductor 功能描述:MCF5225X Series 32 Bit 80 Mhz Microcontroller - MAPBGA-144 |
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