參數(shù)資料
型號(hào)： C164SM
廠商： INFINEON TECHNOLOGIES AG
英文描述： 16-Bit Single-Chip Microcontrol ler
中文描述： 16位單芯片Microcontrol萊爾
文件頁(yè)數(shù)： 56/68頁(yè)
文件大?。?/td> 1107K
代理商： C164SM
C164CM
C164SM
Data Sheet
52
V1.0, 2001-05
AC Characteristics
External Clock Drive XTAL1
(Operating Conditions apply)
Figure 13
External Clock Drive XTAL1
Note: If the on-chip oscillator is used together with a crystal, the oscillator frequency is
limited to a range of 4 MHz to 16 MHz.
It is strongly recommended to measure the oscillation allowance (or margin) 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 guaranteed by
design only (not 100% tested).
Table 12
External Clock Drive Characteristics
Parameter
Symbol
Direct Drive
1:1
min.
Prescaler
2:1
min.
20
6
6
–
–
PLL
1:N
Unit
max.
–
–
–
8
8
max.
–
–
–
5
5
min.
60
1)
10
10
–
–
max.
500
1)
–
–
10
10
Oscillator period
High time
2)
Low time
2)
Rise time
2)
Fall time
2)
t
OSC
SR 40
t
1
t
2
t
3
SR
–
t
4
SR
–
1)
The minimum and maximum oscillator periods for PLL operation depend on the selected CPU clock generation
mode. Please see respective table above.
ns
ns
ns
ns
ns
2)
The clock input signal must reach the defined levels
V
IL2
and
V
IH2
.
3)
The minimum high and low time refers to a duty cycle of 50%. The maximum operating frequency (
f
CPU
) in
direct drive mode depends on the duty cycle of the clock input signal.
SR 20
3)
SR 20
3)
MCT02534
3
t
4
t
V
IH2
V
IL
V
DD
0.5
1
t
2
t
OSC
t
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