參數(shù)資料
型號(hào): DSP56F801FA80E
廠商: Freescale Semiconductor
文件頁數(shù): 19/48頁
文件大小: 0K
描述: IC DSP 60MHZ 16KB FLASH 48-LQFP
標(biāo)準(zhǔn)包裝: 250
系列: 56F8xx
核心處理器: 56800
芯體尺寸: 16-位
速度: 80MHz
連通性: SCI,SPI
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 11
程序存儲(chǔ)器容量: 20KB(10K x 16)
程序存儲(chǔ)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 ~ 85°C
封裝/外殼: 48-LQFP
包裝: 托盤
56F801 Technical Data, Rev. 17
26
Freescale Semiconductor
compensate for any asynchronous transitions between the two clock signals so that no glitches occur in the
resulting master clock to the chip. When changing clocks, the user must ensure that the clock source is not
switched until the desired clock is enabled and stable.
To compensate for variances in the device manufacturing process, the accuracy of the relaxation oscillator
can be incrementally adjusted to within
±0.25% of 8MHz by trimming an internal capacitor. Bits 0-7 of
the IOSCTL (internal oscillator control) word allow the user to set in an additional offset (trim) to this
preset value to increase or decrease capacitance. The default value of this trim is 128 units, making the
power-up default capacitor size 432 units. Each unit added or deleted changes the output frequency by
about 0.2%, allowing incremental adjustment until the desired frequency accuracy is achieved.
Table 3-9 Relaxation Oscillator Characteristics
Operating Conditions: V
SS = VSSA = 0 V, VDD = VDDA = 3.0–3.6 V, TA = –40° to +85°C
Characteristic
Symbol
Min
Typ
Max
Unit
Frequency Accuracy1
1.
Over full temperature range.
Δf—
+2+5%
Frequency Drift over Temp
Δf/Δt—
+0.1
%/oC
Frequency Drift over Supply
Δf/ΔV—
0.1
%/V
Trim Accuracy
Δf
T
—+0.25
%
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