C505 / C505C
C505A / C505CA
AC Characteristics (16 MHz, 0.4 to 0.6 Duty Cycle, cont’d)
External Clock Drive Characteristics
Parameter
Oscillator period
High time
Low time
Rise time
Fall time
Oscillator duty cycle
Clock cycle
Symbol CPU Clock = 16 MHz Variable CPU Clock Unit
Duty Cycle 0.4 to 0.6 1/CLP = 2 to 16 MHz
min.
max.
min.
max.
CLP
62.5
62.5
62.5
500
ns
TCLH 25
–
25
CLP - TCLL ns
TCLL
25
–
25
CLP - TCLH ns
tR
–
10
–
10
ns
tF
–
10
–
10
ns
DC
0.4
0.6
25 / CLP
1 - 25 / CLP –
TCL
25
37.5
CLP * DCmin CLP * DCmax ns
Note: The 16 MHz values in the tables are given as an example for a typical duty cycle variation of
the oscillator clock from 0.4 to 0.6.
Data Sheet
70
08.00