Standard Operating Conditions
(unless otherwise stated)
Param No.
Sym.
Characteristic
Min.
Typ. †
Max.
Units
Conditions
ECL Oscillator
OS1
FECL
Clock Frequency
—
—
500
kHz
OS2
TECL_DC
Clock Duty Cycle
40
—
60
%
ECM Oscillator
OS3
FECM
Clock Frequency
—
—
8
MHz
OS4
TECM_DC
Clock Duty Cycle
40
—
60
%
ECH Oscillator
OS5
FECH
Clock Frequency
—
—
64
MHz
OS6
TECH_DC
Clock Duty Cycle
40
—
60
%
LP Oscillator
OS7
FLP
Clock Frequency
—
—
100
kHz
Note 4
XT Oscillator
OS8
FXT
Clock Frequency
—
—
4
MHz
Note 4
HS Oscillator
OS9
FHS
Clock Frequency
—
—
20
MHz
VDD > 2.5V, Note 4
Secondary
Oscillator
OS10
FSEC
Clock Frequency
32.4
32.768
33.1
kHz
Note 4
System
Oscillator
OS20
FOSC
System Clock Frequency
—
—
64
MHz
(Note 2, Note 3)
OS21
FCY
Instruction Frequency
—
FOSC/4
—
MHz
OS22
TCY
Instruction Period
62.5
1/FCY
—
ns
Note:
Instruction cycle period (TCY)
equals four times the input oscillator time base period. All specified values
are based on characterization data for that particular oscillator type under
standard operating conditions with the device executing code. Exceeding these
specified limits may result in an unstable oscillator operation and/or higher
than expected current consumption. All devices are tested to operate at “min”
values with an external clock applied to OSC1 pin. When an external clock input
is used, the “max” cycle time limit is “DC” (no clock) for all devices.
The system clock frequency
(FOSC) is selected by the “main clock switch controls” as described in the
“Power Saving Operation Modes” section.
The system clock frequency
(FOSC) must meet the voltage requirements defined in the "Standard Operating
Conditions" section.
LP, XT and HS oscillator modes
require an appropriate crystal or resonator to be connected to the device. For
clocking the device with the external square wave, one of the EC mode selections
must be used.
The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.