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參數(shù)資料
| 型號： | MC56F8123VFBE |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 138/140頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DSP 16BIT 40MHZ 64-LQFP |
| 標準包裝： | 160 |
| 系列： | 56F8xxx |
| 核心處理器： | 56800E |
| 芯體尺寸： | 16-位 |
| 速度： | 40MHz |
| 連通性： | SCI，SPI |
| 外圍設備： | POR，WDT |
| 輸入/輸出數(shù)： | 27 |
| 程序存儲器容量： | 32KB（16K x 16） |
| 程序存儲器類型： | 閃存 |
| RAM 容量： | 8K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.25 V ~ 3.6 V |
| 數(shù)據(jù)轉換器： | A/D 8x12b |
| 振蕩器型： | 內部 |
| 工作溫度： | -40°C ~ 105°C |
| 封裝/外殼： | 64-LQFP |
| 包裝： | 托盤 |
| 產品目錄頁面： | 734 (CN2011-ZH PDF) |
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Clock Generation Overview
56F8323 Technical Data, Rev. 17
Freescale Semiconductor
97
Preliminary
6.5.10.2
Input/Output Short Address Low (ISAL[21:6])—Bit 15–0
This field represents the lower 16 address bits of the “hard coded” I/O short address.
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 56F8323/56F8123 operate 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 Part 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
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
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| MC56F8135 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controller |
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| MC56F8135VFGE | 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC 16 BIT HYBRID CNTRLR RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設備每秒兆指令數(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 安裝風格:SMD/SMT |
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