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| 型号： | MC68EC000EI20R |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 24/26页 |
| 文件大小： | 0K |
| 描述： | IC MPU 32BIT 20MHZ 68-PLCC |
| 标准包装： | 250 |
| 系列： | M680x0 |
| 处理器类型： | M680x0 32-位 |
| 速度： | 20MHz |
| 电压： | 3.3V，5V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 68-LCC（J 形引线） |
| 供应商设备封装： | 68-PLCC（25x25） |
| 包装： | 带卷 (TR) |
7
M68000 USER’S MANUAL ADDENDUM
MOTOROLA
After the previous steps are completed, the MC68SEC000 will remain in the low-power mode until it
recognizes the appropriate interrupt . External logic will also have to poll IPLB2–IPLB0 to detect the proper
interrupt. When the correct interrupt level is received, the following steps will bring the processor out of the
low-power mode:
1.
Restart the system clock if it was stopped.
2.
Wait for the system clock to become stable.
3.
Assert the RESTART signal. This will cause the processor’s clock to start on the next falling edge of
the system clock. Figure 6 shows the timing for bringing the processor out of the low-power mode.
Both the RESTART and RESET signals are subject to the asynchronous setup time as specified in
the Electrical Characteristics section of this addendum.
WARNING
The system clock must be stable before the RESTART signal is asserted
to prevent glitches in the clock. An unstable clock can cause unpredictable
results in the MC68SEC000.
Figure 6. MC68SEC000 Clock Start Timing
4.
If the MC68SEC000 was placed in a three-state condition, the BR signal must be negated before the
processor can begin executing instructions.
CLK
CPU_CLK
RESTART
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For More Information On This Product,
Go to: www.freescale.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC68EC000EI8 | 功能描述:微处理器 - MPU 8/16/32 BIT MPU 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 |
| MC68EC000EI8 | 制造商:Freescale Semiconductor 功能描述:Microprocessor |
| MC68EC000EI8R2 | 功能描述:微处理器 - MPU 8/16/32 BIT MPU 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 |
| MC68EC000FN10 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:Addendum to M68000 User Manual |
| MC68EC000FN12 | 制造商:Motorola Inc 功能描述: |
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