PIC24FJ128GB MICROCHIP [Microchip Technology], PIC24FJ128GB Datasheet - Page 304

• Manufacturer Part Number: PIC24FJ128GB
• Description: 64/80/100-Pin, 16-Bit Flash Microcontrollers with USB On-The-Go (OTG)
• Manufacturer: MICROCHIP [Microchip Technology]

PIC24FJ256GB110 FAMILY
FIGURE 28-3:
TABLE 28-13: EXTERNAL CLOCK TIMING REQUIREMENTS
DS39897B-page 302
AC CHARACTERISTICS
OS10
OS20
OS25
OS30
OS31
OS40
OS41
Note 1:
Param
No.
CLKO
OSCI
2:
3:
F
T
T
TosL,
TosH
TosR,
TosF
TckR CLKO Rise Time
TckF
Sym
OSC
CY
OSC
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
Instruction cycle period (T
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 OSCI/CLKI pin. When an external clock input is used, the “Max.” cycle time
limit is “DC” (no clock) for all devices.
Measurements are taken in EC mode. The CLKO signal is measured on the OSCO pin. CLKO is low for
the Q1-Q2 period (1/2 T
External CLKI Frequency
(External clocks allowed
only in EC mode)
Oscillator Frequency
T
Instruction Cycle Time
External Clock in (OSCI)
High or Low Time
External Clock in (OSCI)
Rise or Fall Time
CLKO Fall Time
OSC
Q4
= 1/F
Characteristic
EXTERNAL CLOCK TIMING
OSC
Q1
(3)
(3)
Q2
CY
OS25
CY
) and high for the Q3-Q4 period (1/2 T
(2)
OS20
) equals two times the input oscillator time base period. All specified values are
Q3
OS40
Standard Operating Conditions: 2.50 to 3.6V (unless otherwise stated)
Operating temperature
0.45 x T
62.5
Min
DC
Q4
10
10
31
—
—
—
—
Preliminary
4
3
4
OSC
Q1
Typ
—
—
—
—
—
—
—
—
—
—
—
6
6
OS30
Q2
(1)
-40°C ≤ T
OS30
Q3
Max
DC
32
48
10
32
32
33
—
—
20
10
10
8
CY
OS41
).
A
Q4
≤ +85°C for Industrial
Units
MHz
MHz
MHz
MHz
MHz
MHz
kHz
—
ns
ns
ns
ns
ns
© 2008 Microchip Technology Inc.
Q1
OS31
EC
ECPLL
XT
XTPLL
HS
HSPLL
SOSC
See parameter OS10
for F
EC
EC
Q2
OSC
OS31
Conditions
value
Q3