SAK-XC2286-72F66L INFINEON [Infineon Technologies AG], SAK-XC2286-72F66L Datasheet - Page 93

• Manufacturer Part Number: SAK-XC2286-72F66L
• Description: 16/32-Bit Single-Chip Microcontroller with 32-Bit Performance
• Manufacturer: INFINEON [Infineon Technologies AG]

Preliminary
4.4.3
These parameters define the external clock supply for the XC228x. The clock signal can
be supplied either to pin P2.9 or to pin XTAL1.
Table 19
Parameter
Oscillator period
High time
Low time
Rise time
Fall time
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
Figure 16
Note: If the on-chip oscillator is used together with a crystal or a ceramic resonator, the
Data Sheet
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 input frequency
range. Operation at input frequencies below 4 MHz is possible but is verified by
design only (not subject to production test).
2)
2)
2)
2)
0.5
External Clock Drive
External Clock Drive Characteristics (Operating Conditions apply)
V
External Clock Drive XTAL1
DDI
t
1
Symbol
t
t
t
t
t
OSC
1
2
3
4
t
2
91
V
ILC
SR
SR
SR
SR
SR
t
OSC
and
t
3
V
IHC
Min.
25
6
6
–
–
(for XTAL1) or
XC2000 Family Derivatives
XC2287 / XC2286 / XC2285
Limit Values
t
4
Electrical Parameters
MCT05572
Max.
250
–
–
8
8
V
IL
and
1)
V
V
V
IHC
ILC
IH
V0.91, 2007-02
for P2.9.
Draft Version
Unit
ns
ns
ns
ns
ns