saf-xc878m-16ffi5v Infineon Technologies Corporation, saf-xc878m-16ffi5v Datasheet - Page 137

• Manufacturer Part Number: saf-xc878m-16ffi5v
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Infineon Technologies Corporation

4.3.6
Table 52
timing parameters are based on the direct XTAL1 drive of clock input signals. They are
not applicable if an external crystal or ceramic resonator is considered.
Table 52
Parameter
Oscillator period
High time
Low time
Rise time
Fall time
1) The clock input signals with 45-55% duty cycle are used.
2) Not all parameters are 100% tested, but are verified by design/characterization and test correlation.
3) The clock input signal must reach the defined levels
Figure 43
Data Sheet
0.5 V
DDC
shows the parameters that define the external clock supply for XC87x. These
External Clock Drive XTAL1
External Clock Drive Characteristics (Operating Conditions apply)
External Clock Drive XTAL1
t
1
Symbol
t
t
t
t
t
osc
1
2
3
4
t
OSC
SR 50
SR 15
SR 15
SR -
SR -
Min.
t
2
128
Limit Values
V
ILX
and
500
-
-
10
10
Max.
t
V
3
IHX
.
Unit
ns
ns
ns
ns
ns
Electrical Parameters
Test Conditions
1)2)
2)3)
2)3)
2)3)
2)3)
t
4
XC87xCLM
V1.5, 2011-03
V
V
IHX
ILX