W78E365 Datasheet, PDF (27/40 Pages) Winbond – 8-BIT MICROCONTROLLER

W78E365
7.3 A.C. Characteristics
The AC specifications are a function of the particular process used to manufacture the part, the ratings
of the I/O buffers, the capacitive load, and the internal routing capacitance. Most of the specifications
can be expressed in terms of multiple input clock periods (TCP), and actual parts will usually
experience less than a ±20 nS variation.
Clock Input Waveform
XTAL1
T_CH
T_CL
F OP, TCP
PARAMETER
Operating Speed
Clock Period
Clock High
Clock Low
SYMBOL
FOP
TCP
TCH
TCL
MIN.
0
25
20
20
TYP.
-
-
-
-
Notes:
1. The clock may be stopped indefinitely in either state.
2. The TCP specification is used as a reference in other specifications.
3. There are no duty cycle requirements on the XTAL1 input.
MAX.
40
-
-
-
UNIT
MHz
nS
nS
nS
NOTES
1
2
3
3
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Publication Release Date: April 20, 2005
Revision A5