Rainbow Electronics W79E8213R - Manual (Page 93)

Preliminary W79E8213/W79E8213R Data Sheet
Publication Release Date: July 11, 2008
- 93 - Revision A2
26.5 AC ELECTRICAL CHARACTERISTICS
t
CLCL
t
CLCX
t
CHCX
t
CLCH
t
CHCL
Note: Duty cycle is 50%.
26.6 EXTERNAL CLOCK CHARACTERISTICS
PARAMETER SYMBOL MIN. TYP. MAX. UNITS NOTES
Clock High Time t
CHCX
12.5 - - nS
Clock Low Time t
CLCX
12.5 - - nS
Clock Rise Time t
CLCH
- - 10 nS
Clock Fall Time t
CHCL
- - 10 nS
26.7 AC SPECIFICATION
PARAMETER SYMBOL
VARIABLE CLOCK
MIN.
VARIABLE CLOCK
MAX.
UNITS
Oscillator Frequency 1/t
CLCL
0 20 MHz
26.8 TYPICAL APPLICATION CIRCUITS
CRYSTAL C1 C2 R
4MHz ~ 20 MHz without without without
The above table shows the reference values for crystal applications.