參數(shù)資料
型號: XC164D
廠商: INFINEON TECHNOLOGIES AG
英文描述: 16-Bit Single-Chip Microcontroller with C166SV2 Core
中文描述: 16位單片機與C166SV2核心
文件頁數(shù): 61/70頁
文件大小: 747K
代理商: XC164D
XC164D
Derivatives
Timing Parameters
Data Sheet
56
V1.0, 2005-01
5.2
External Clock Drive XTAL1
Figure 16
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 14
External Clock Drive Characteristics
(Operating Conditions apply)
Parameter
Symbol
Limit Values
min.
20
6
6
Unit
max.
250
1)
8
8
Oscillator period
High time
2)
Low time
2)
Rise time
2)
Fall time
2)
t
OSC
t
1
t
2
t
3
t
4
SR
SR
SR
SR
SR
1) The maximum limit is only relevant for PLL operation to ensure the minimum input frequency for the PLL.
2) The clock input signal must reach the defined levels
V
ILC
and
V
IHC
.
ns
ns
ns
ns
ns
MCT05138
3
t
4
t
V
IHC
V
ILC
V
DDI
0.5
1
t
2
t
OSC
t
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