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參數(shù)資料
| 型號(hào)： | MC56F8323 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國(guó))有限公司 |
| 英文描述： | 16-bit Hybrid Controller(16位混合控制器) |
| 中文描述： | 16位混合控制器（16位混合控制器） |
| 文件頁(yè)數(shù)： | 91/132頁(yè) |
| 文件大?。?/td> | 2202K |
| 代理商： | MC56F8323 |
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Clock Generation Overview
56F8323 Technical Data
Preliminary
91
6.6 Clock Generation Overview
The SIM uses an internal master clock from the OCCS (CLKGEN) module to produce the
peripheral and system (core and memory) clocks. The maximum master clock frequency is
120MHz. Peripheral and system clocks are generated at half the master clock frequency and
therefore at a maximum 60MHz. The SIM provides power modes (Stop, Wait) and clock enables
(SIM_PCE register, CLK_DIS, ONCE_EBL) to control which clocks are in operation. The OCCS,
power modes, and clock enables provide a flexible means to manage power consumption.
Power utilization can be minimized in several ways. In the OCCS, the relaxation oscillator, crystal
oscillator, and PLL may be shut down when not in use. When the PLL is in use, its prescaler and
postscaler can be used to limit PLL and master clock frequency. Power modes permit system
and/or peripheral clocks to be disabled when unused. Clock enables provide the means to disable
individual clocks. Some peripherals provide further controls to disable unused subfunctions. Refer
to
Part 3, On-Chip Clock Synthesis (OCCS)
and the
56F8300 Peripheral User Manual
for
further details.
The memory, peripheral and core clocks all operate at the same frequency (60MHz max).
6.7 Power-Down Modes
The 56F8323 operates in one of three power-down modes, as shown in
Table 6-2
.
All peripherals, except the COP/watchdog timer, run off the IPBus clock frequency, which is the
same as the main processor frequency in this architecture. The maximum frequency of operation
is SYS_CLK = 60MHz.
Refer to the PCE register in
Section 6.5.9
and ADC power modes. Power is a function of the
system frequency, which can be controlled through the OCCS.
Table 6-2 Clock Operation in Power-Down Modes
Mode
Core Clocks
Peripheral Clocks
Description
Run
Active
Active
Device is fully functional
Wait
Core and memory
clocks disabled
Active
Peripherals are active and can produce
interrupts if they have not been masked off.
Interrupts will cause the core to come out of its
suspended state and resume normal operation.
Typically used for power-conscious applications.
Stop
System clocks continue to be generated in
the SIM, but most are gated prior to
reaching memory, core and peripherals.
The only possible recoveries from Stop mode
are:
1. CAN traffic (1st message will be lost)
2. Non-clocked interrupts (IRQA)
3. COP reset
4. External reset
5. Power-on reset
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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| MC56F8323EVM | 功能描述:開(kāi)發(fā)板和工具包 - 其他處理器 MC56F832X Dev Kit RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評(píng)估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓: |
| MC56F8323EVM | 制造商:Freescale Semiconductor 功能描述:Tools Development kit Kit Con |
| MC56F8323EVME | 功能描述:開(kāi)發(fā)板和工具包 - 其他處理器 MC56F8323 EVAL BRD RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評(píng)估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓: |
| MC56F8323EVME | 制造商:Freescale Semiconductor 功能描述:Evaluation Kit for MC56F832x and MC56F81 |
| MC56F8323MFB60 | 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC 60MHz 60MIPS RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT |
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