參數(shù)資料
型號： MC56F8014MFAE
廠商： Freescale Semiconductor
文件頁數(shù)： 100/124頁
文件大?。?/td> 0K
描述： IC DIGITAL SIGNAL CTLR 32-LQFP
標準包裝： 1,250
系列： 56F8xxx
核心處理器： 56800E
芯體尺寸： 16-位
速度： 32MHz
連通性： I²C，SCI，SPI
外圍設備： POR，PWM，WDT
輸入/輸出數(shù)： 26
程序存儲器容量： 16KB（8K x 16）
程序存儲器類型： 閃存
RAM 容量： 2K x 16
電壓 - 電源 (Vcc/Vdd)： 3 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 8x12b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 125°C
封裝/外殼： 32-LQFP
包裝： 托盤
Clock Generation Overview
56F8014 Technical Data, Rev. 11
Freescale Semiconductor
77
Figure 6-14 I/O Short Address Location Low Register (SIM_IOSALO)
6.3.10.3
Input/Output Short Address Location (ISAL[21:6])—Bit 15–0
This field represents the lower 16 address bits of the “hard coded” I/O short address.
6.4 Clock Generation Overview
The SIM uses master clocks, 2X system clock at a maximum of 64 MHz, from the OCCS module to
produce the peripheral and system (core and memory) clocks at a maximum of 32 MHz. It divides the
master clock by two and gates it with appropriate power mode and clock gating controls. The high speed
peripheral clock input from OCCS operates at three times the system clock for PWM and Quad Timer
module at a maximum of 96 MHz.
The OCCS configuration controls the operating frequency of the SIM’s master clocks. In the OCCS, either
an external clock or the relaxation oscillator can be selected as the master clock source (MSTR_OSC).
When selected, the relaxation oscillator can be operated at full speed (8 MHz), standby speed (200 kHz),
or powered down. An 8 MHz clock can be multiplied to 192 MHz using the PLL and postscaled to provide
a variety of high speed clock rates. Either the postscaled PLL output or the input clock of the PLL signal
can be selected to produce the master clocks to the SIM. When the PLL is not selected, the high speed
peripheral clock is disabled and the 2x system clock is the input clock from either the internal relaxation
oscillator or from an external clock source.
In combination with the OCCS module, the SIM provides power modes (see Section 6.5), clock enables
(SIM_PCE register, CLK_DIS, ONCE_EBL), and clock rate controls (TCR, PCR) to provide flexible
control of clocking and power utilization. The SIM’s clock enable controls can be used to disable
individual clocks when not needed. The clock rate controls enable the high speed clocking option for the
Timer channels and PWM but require the PLL to be on and selected. Refer to the 56F801X Peripheral
Reference Manual for further details.
6.5 Power-Down Modes
The 56F8014 operates in one of five Power-Down modes, as shown in Table 6-3
.
Base + $E
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Read
ISAL[21:6]
Write
RESET
11111
1
Table 6-3 Clock Operation in Power-Down Modes
Mode
Core Clocks
Peripheral Clocks
Description
Run
Core and memory
clocks disabled
Peripheral clocks
enabled
Device is fully functional
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