參數(shù)資料
型號(hào): SAK-TC1762-128F80HL
廠商: INFINEON TECHNOLOGIES AG
元件分類: 微控制器/微處理器
英文描述: 32-BIT, FLASH, 80 MHz, MICROCONTROLLER, PQFP176
封裝: PLASTIC, LQFP-176
文件頁(yè)數(shù): 78/114頁(yè)
文件大小: 852K
代理商: SAK-TC1762-128F80HL
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TC1762
Functional Description
Preliminary
Data Sheet
62
V1.0, 2008-04
Oscillation measurement with the final target system is strongly recommended to verify
the input amplitude at XTAL1 and to determine the actual oscillation allowance (margin
negative resistance) for the oscillator-crystal system.
When using an external clock signal, the signal must be connected to XTAL1. XTAL2 is
left open (unconnected). The external clock frequency can be in the range of 0 - 40 MHz
if the PLL is bypassed, and 4 - 40 MHz if the PLL is used.
The oscillator can also be used in combination with a ceramic resonator. The final
circuitry must also be verified by the resonator vendor.
Figure 3-15 shows the recommended external oscillator circuitries for both operating
modes, external crystal mode and external input clock mode. A block capacitor is
recommended to be placed between
V
DDOSC/VDDOSC3 and VSSOSC.
Figure 3-15
Oscillator Circuitries
Note: For crystal operation, it is strongly recommended to measure the negative
resistance in the final target system (layout) to determine the optimum parameters
for the oscillator operation. Please refer to the minimum and maximum values of
the negative resistance specified by the crystal supplier.
TC1762
Oscillator
TC1762
Oscillator
MCS06084
VDDOSC
VSSOSC
C
X1
4 - 25
MHz
C
X2
XTAL1
XTAL2
VDDOSC
VSSOSC
XTAL1
XTAL2
External Clock
Signal
f
OSC
fOSC
Fundamental
Mode Crystal
4 - 40
MHz
VDDOSC3
Crystal Frequency
C
X1, CX2
1)
4 MHz
8 MHz
12 MHz
16 - 25 MHz
10 pF
12 pF
18 pF
33 pF
1) Note that these are evaluation start values!
R
X2
1)
0
R
X2
R
Q
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