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参数资料
| 型号： | SPEAR300-2 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, FLASH, 333 MHz, RISC MICROCONTROLLER, PBGA289 |
| 封装： | 15 X 15 MM, 1.70 MM HEIGHT, 0.80 MM PITCH, ROHS COMPLIANT, LFBGA-289 |
| 文件页数： | 61/83页 |
| 文件大小： | 1027K |
| 代理商： | SPEAR300-2 |
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Timing requirements
SPEAr300
64/83
Doc ID 16324 Rev 2
Note:
1
so the values present in the three tables here above have been calculated using the
minimum programmable values of :
IC_HS_SCL_HCNT=19 and IC_HS_SCL_LCNT=53 registers (for High-Speed mode);
IC_FS_SCL_HCNT=99 and IC_FS_SCL_LCNT=215 registers (for Fast-Speed mode);
IC_SS_SCL_HCNT=664 and IC_SS_SCL_LCNT=780 registers (for Standard-Speed
mode).
Note:
1
These minimum values depend on the AHB clock (HCLK) frequency, which is 166 MHz.
2
A device may internally require a hold time of at least 300 ns for the SDA signal (referred to
the VIHmin of the SCL signal) to bridge the undefined region of the falling edge of SCL
(Please refer to the I2C Bus Specification v3-0 Jun 2007). However, the SDA data hold time
in the I2C controller of SPEAr300 is one-clock cycle based (6 ns with the HCLK clock at 166
MHz). This time may be insufficient for some slave devices. A few slave devices may not
receive the valid address due to the lack of SDA hold time and will not acknowledge even if
the address is valid. If the SDA data hold time is insufficient, an error may occur.
3
Workaround: If a device needs more SDA data hold time than one clock cycle, an RC delay
circuit is needed on the SDA line as illustrated in the following figure:
Figure 20.
RC delay circuit
For example, R= K and C = 200 pF.
6.4
FSMC timing characteristics
The characterization timing is done considering an output load of 3 pF on the data, 15 pF on
NF_CE, NF_RE and NF_WE and 10 pF on NF_ALE and NF_CLE.
The operating conditions are V= 0.90 V, T=125 °C in worst case and V=1.10 V, T= 40 °C in
best case.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SPEAR310-2 | 功能描述:微处理器 - MPU MPU ARM926 Cortex 8-ch DMA 32KB Rom 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 |
| SPEAR320 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Embedded MPU with ARM926 core, optimized for factory automation and consumer applications |
| SPEAR320-2 | 功能描述:微处理器 - MPU MPU ARM926 Cortex 8-ch DMA 32KB Rom 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 |
| SPEAR320S-2 | 制造商:STMicroelectronics 功能描述:SPEAR 32BIT EMBEDDED MICROPROCESSOR ARM926EJ-S (UP TO 333 M - Bulk 制造商:STMicroelectronics 功能描述:SPEAR320 Series 333 MHz 8 kB RAM ARM926 Core Embedded Microprocessor - LFBGA-289 |
| SPEAR600-2 | 功能描述:微处理器 - MPU MPU ARM926 Cortex 8-ch DMA 32KB Rom 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 |
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