參數(shù)資料
型號(hào): SAB-XC164SM-8F40F
廠商: INFINEON TECHNOLOGIES AG
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP64
封裝: PLASTIC, TQFP-64
文件頁(yè)數(shù): 60/66頁(yè)
文件大?。?/td> 613K
代理商: SAB-XC164SM-8F40F
XC164SM
Derivatives
Electrical Parameters
Data Sheet
61
V1.0, 2005-11
4.4.3
External Clock Drive XTAL1
Figure 4-7
External Clock Drive XTAL1
Note: If the on-chip oscillator is used together with a crystal or a ceramic resonator, the
oscillator frequency is limited to a range of 4 MHz to 16 MHz.
It is strongly recommended to measure the oscillation allowance (negative
resistance) in the final target system (layout) to determine the optimum
parameters for the oscillator operation. Please refer to the limits specified by the
crystal supplier.
When driven by an external clock signal it will accept the specified frequency
range. Operation at lower input frequencies is possible but is verified by design
only (not subject to production test).
Table 4-11
External Clock Drive Characteristics
(Operating Conditions apply)
Parameter
Symbol
Limit Values
Unit
Min.
Max.
Oscillator period
t
OSC
SR
25
250
1)
1) The maximum limit is only relevant for PLL operation to ensure the minimum input frequency for the PLL.
ns
High time
2)
2) The clock input signal must reach the defined levels
V
ILC and VIHC.
t
1
SR
6
ns
Low time
t
2
SR
6
ns
Rise time
t
3
SR
8
ns
Fall time
t
4
SR
8
ns
MCT05572
t
1
t
2
t
OSC
t
3
t
4
0.5
V
DDI
V
ILC
V
IHC
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