PIC24HJ128GP206-I Datasheet, PDF (246/286 Pages) Microchip Technology – High-Performance, 16-Bit Microcontrollers

PIC24HJXXXGPX06/X08/X10
FIGURE 23-2:
OSC1
CLKO
EXTERNAL CLOCK TIMING
Q1 Q2
Q3 Q4 Q1
Q2 Q3
Q4
OS20
OS41
OS30 OS30
OS25
OS31 OS31
OS40
TABLE 23-16: EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 2.5V to 3.6V
(unless otherwise stated)
Operating temperature -40°C ≤ TA ≤ +85°C for Industrial
Param
No.
Symb
Characteristic
Min
Typ⁽¹⁾ Max Units
Conditions
OS10 FIN External CLKI Frequency
DC
—
40 MHz EC
(External clocks allowed only
in EC and ECPLL modes)
Oscillator Crystal Frequency
3.5
—
10 MHz XT
10
—
40 MHz HS
—
—
33
kHz SOSC
OS20
OS25
TOSC TOSC = 1/FOSC
TCY Instruction Cycle Time⁽²⁾
12.5
—
DC
ns
25
—
DC
ns
OS30 TosL, External Clock in (OSC1)
TosH High or Low Time
0.375 x TOSC — 0.625 x ns EC
TOSC
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
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 “min.”
values with an external clock applied to the OSC1/CLKI pin. When an external clock input is used, the
“max.” 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.
DS70175F-page 244
© 2007 Microchip Technology Inc.