PIC24EP256GU810-I Datasheet, PDF (512/622 Pages) Electronic Film Capacitors, Inc. – 16-Bit Microcontrollers and Digital Signal Controllers with High-Speed PWM, USB and Advanced Analog

dsPIC33EPXXX(GP/MC/MU)806/810/814 and PIC24EPXXX(GP/GU)810/814
FIGURE 32-2:
OSC1
CLKO
EXTERNAL CLOCK TIMING
Q1 Q2
Q3 Q4 Q1
Q2 Q3
Q4
OS41
OS20
OS25
OS30 OS30
OS31 OS31
OS40
TABLE 32-16: EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +125°C for Extended
Param. Symbol
Characteristic
Min.
Typ.⁽¹⁾
Max.
Units Conditions
OS10 FIN
External CLKI Frequency
DC
—
60
MHz EC
(External clocks allowed only
in EC and ECPLL modes)
Oscillator Crystal Frequency
3.5
—
10
10
—
40
32.4
32.768
33.1
MHz XT
MHz HS
kHz SOSC
OS20
OS25
TOSC
TCY
TOSC = 1/FOSC
Instruction Cycle Time⁽²⁾
8.33
—
DC
ns +125ºC
7.14
—
DC
ns +85ºC
16.67
—
DC
ns +125ºC
14.28
—
DC
ns +85ºC
OS30
TosL,
TosH
External Clock In (OSC1)
High or Low Time
0.375 x TOSC — 0.625 x TOSC ns EC
OS31
OS40
OS41
TosR,
TosF
TckR
TckF
External Clock In (OSC1)
Rise or Fall Time
CLKO Rise Time⁽³⁾
CLKO Fall Time⁽³⁾
—
—
20
ns EC
—
5.2
—
ns
—
5.2
—
ns
OS42 GM
External Oscillator
Transconductance⁽⁴⁾
—
12
—
mA/V HS, VDD = 3.3V,
TA = +25ºC
—
6
—
mA/V XT, VDD = 3.3V,
TA = +25ºC
Note 1: Data in “Typ” column is at 3.3V, +25°C unless otherwise stated.
2: Instruction cycle period (TCY) equals two 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
“Minimum” values with an external clock applied to the OSC1 pin. When an external clock input is used,
the “Maximum” cycle time limit is “DC” (no clock) for all devices.
3: Measurements are taken in EC mode. The CLKO signal is measured on the OSC2 pin.
4: This parameter is characterized, but not tested in manufacturing.
DS70616G-page 512
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