參數(shù)資料
型號： MC68HC916X1CTH16
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 16.78 MHz, MICROCONTROLLER, PQFP120
封裝： QFP-120
文件頁數(shù)： 74/172頁
文件大?。?/td> 1200K
代理商： MC68HC916X1CTH16
MC68HC916X1
MOTOROLA
MC68HC916X1TS/D
165
1. At VRH – VRL= 5.12 V, one 10-bit count = 5 mV and one 8-bit count = 20 mV.
2. 8-bit absolute error of 1 count (20 mV) includes 1/2 count (10 mV) inherent quantization error and 1/2 count (10
mV) circuit (differential, integral, and offset) error.
3. Conversion accuracy varies with fADCLK rate. Reduced conversion accuracy occurs at maximum fADCLK. As-
sumes that minimum sample time (2 ADC Clocks) is selected.
4. 10-bit absolute error of 2.5 counts (12.5 mV) includes 1/2 count (2.5 mV) inherent quantization error and 2 counts
(10 mV) circuit (differential, integral, and offset) error.
5. Maximum source impedance is application-dependent. Error resulting from pin leakage depends on junction
leakage into the pin and on leakage due to charge-sharing with internal capacitance.
Error from junction leakage is a function of external source impedance and input leakage current. Expected error
in result value due to junction leakage is expressed in voltage (VERRJ):
VERRJ = RS X IOFF
where IOFF is a function of operating temperature, as shown in Table 83.
Charge-sharing leakage is a function of input source impedance, conversion rate, change in voltage between
successive conversions, and the size of the decoupling capacitor used. Error levels are best determined empir-
ically. In general, continuous conversion of the same channel may not be compatible with high source imped-
ance.
Table 85 ADC Conversion Characteristics (Operating)
(VDD and VDDA = 5.0 Vdc ± 5%, VSS = 0 Vdc, TA = TL to TH,
0.5 MHz
≤ f
ADCLK ≤ 1.0 MHz, 2 Clock Input Sample Time)
Num
Parameter
Symbol
Min
Typ
Max
Unit
1
8-bit Resolution1
1 Count
—
20
—
mV
2
8-bit Differential Nonlinearity
DNL
–0.5
—
–0.5
Counts
3
8-bit Integral Nonlinearity
INL
–1
—
1
Counts
4
8-bit Absolute Error2
AE
–1
—
1
Counts
5
10-bit Resolution1
1 Count
—
5
—
mV
6
10-bit Differential Nonlinearity3
DNL
–0.5
—
–0.5
Counts
7
10-bit Integral Nonlinearity3
INL
–2.0
—
2.0
Counts
8
10-bit Absolute Error3,4
AE
–2.5
—
2.5
Counts
9
Source Impedance at Input5
RS
—20—
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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