参数资料
型号: MPC8245LZU266B
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 266 MHz, RISC PROCESSOR, PBGA352
封装: 35 X 35 MM, 1.65 MM HEIGHT, 1.27 MM PITCH, CAVITY-UP, TBGA-352
文件页数: 18/64页
文件大小: 940K
代理商: MPC8245LZU266B
MOTOROLA
MPC8245 Integrated Processor Hardware Specifications
25
Electrical and Thermal Characteristics
1.4.3.4
I2C AC Timing Specifications
Table 12 provides the I2C input AC timing specifications for the MPC8245 at recommended operating
conditions (see Table 2) with LVDD = 3.3 V ± 0.3 V.
Table 12. I2C Input AC Timing Specifications
Num
Characteristic
Min
Max
Unit
Notes
1
Start condition hold time
4.0
CLKs
1, 2
2
Clock low period
(time before the MPC8245 will drive SCL
low as a transmitting slave after detecting
SCL low as driven by an external master)
8.0 + (16
× 2FDR[4:2]) × (5 –
4({FDR[5],FDR[1]} == b’10) –
3({FDR[5],FDR[1]} == b’11) –
2({FDR[5],FDR[1]} == b’00) –
1({FDR[5],FDR[1]} == b’01))
CLKs
1, 2, 4, 5
3
SCL/SDA rise time (from 0.5 V to 2.4 V)
1
ms
4
Data hold time
0
ns
2
5
SCL/SDA fall time (from 2.4 V to 0.5 V)
1
ms
6
Clock high period
(time needed to either receive a data bit or
generate a START or STOP)
5.0
CLKs
1, 2, 5
7
Data setup time
3.0
ns
3
8
Start condition setup time (for repeated
start condition only)
4.0
CLKs
1,2
9
Stop condition setup time
4.0
CLKs
1, 2
Notes:
1. Units for these specifications are in SDRAM_CLK units.
2. The actual values depend on the setting of the digital filter frequency sampling rate (DFFSR) bits in the frequency
divider register I2CFDR. Therefore, the noted timings in the above table are all relative to qualified signals. The
qualified SCL and SDA are delayed signals from what is seen in real time on the I2C bus. The qualified SCL, SDA
signals are delayed by the SDRAM_CLK clock times DFFSR times 2 plus 1 SDRAM_CLK clock. The resulting delay
value is added to the value in the table (where this note is referenced). See Figure 17.
3. Timing is relative to the sampling clock (not SCL).
4. FDR[x] refers to the frequency divider register I2CFDR bit x.
5. Input clock low and high periods in combination with the FDR value in the frequency divider register (I2CFDR)
determine the maximum I2C input frequency. See Table 13.
相关PDF资料
PDF描述
MPC8260ACZUMIBB 32-BIT, 266 MHz, RISC PROCESSOR, PBGA480
MPC8260AZUPIBB 32-BIT, 300 MHz, RISC PROCESSOR, PBGA480
MPC8260AZUPJDB 32-BIT, 300 MHz, RISC PROCESSOR, PBGA480
MPC8260AZUMHBB 32-BIT, 266 MHz, RISC PROCESSOR, PBGA480
MPC8379EVRALGA 32-BIT, 400 MHz, MICROPROCESSOR, PBGA689
相关代理商/技术参数
参数描述
MPC8245LZU266D 功能描述:微处理器 - MPU 266MHz 505.4MIPS RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324
MPC8245LZU300D 功能描述:微处理器 - MPU 300MHz 570MIPS RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324
MPC8245LZU333D 功能描述:微处理器 - MPU 333MHz 632.7MIPS RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324
MPC8245LZU350D 功能描述:微处理器 - MPU 350MHz 665MIPS RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324
MPC8245RZU400D 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Part Number Specification for the MPC8245ARZUnnnX Series