PIC12F1516 MICROCHIP [Microchip Technology], PIC12F1516 Datasheet - Page 54

• Manufacturer Part Number: PIC12F1516
• Description: 28/40/44-Pin Flash Microcontrollers with nanoWatt XLP Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC16(L)F1516/7/8/9
FIGURE 5-3:
DS41452B-page 54
Note 1: A series resistor (R
Note 1: Quartz
C1
C2
2: The value of R
2: Always verify oscillator performance over
3: For oscillator design assistance, reference
quartz crystals with low drive level.
selected (typically between 2 M to 10 M.
• AN826, “Crystal Oscillator Basics and
• AN849, “Basic PIC
• AN943, “Practical PIC
• AN949, “Making Your Oscillator Work”
according
manufacturer. The user should consult the
manufacturer data sheets for specifications
and recommended application.
the V
expected for the application.
the following Microchip Applications Notes:
Crystal Selection for rfPIC
Devices” (DS00826)
(DS00849)
Analysis and Design” (DS00943)
(DS00949)
Quartz
Crystal
R
S
DD
(1)
and temperature range that is
crystal
QUARTZ CRYSTAL
OPERATION (LP, XT OR
HS MODE)
F
to
varies with the Oscillator mode
OSC1/CLKIN
OSC2/CLKOUT
R
S
type,
F
PIC
) may be required for
(2)
®
characteristics
Oscillator Design”
®
®
MCU
Oscillator
®
package
and PIC
Sleep
To Internal
Logic
®
vary
and
Preliminary
FIGURE 5-4:
5.2.1.3
If the oscillator module is configured for LP, XT or HS
modes, the Oscillator Start-up Timer (OST) counts
1024 oscillations from OSC1. This occurs following a
Power-on Reset (POR) and when the Power-up Timer
(PWRT) has expired (if configured), or a wake-up from
Sleep. During this time, the program counter does not
increment and program execution is suspended. The
OST ensures that the oscillator circuit, using a quartz
crystal resonator or ceramic resonator, has started and
is providing a stable system clock to the oscillator
module.
In order to minimize latency between external oscillator
start-up and code execution, the Two-Speed Clock
Start-up mode can be selected (see
“Two-Speed Clock Start-up
Note 1: A series resistor (R
C1
C2 Ceramic
2: The value of R
3: An additional parallel feedback resistor (R
Resonator
ceramic resonators with low drive level.
selected (typically between 2 M to 10 M.
may be required for proper ceramic resonator
operation.
Oscillator Start-up Timer (OST)
R
P
R
(3)
S (1)
CERAMIC RESONATOR
OPERATION
(XT OR HS MODE)
 2011 Microchip Technology Inc.
F
varies with the Oscillator mode
OSC1/CLKIN
OSC2/CLKOUT
Mode”).
S
R
) may be required for
F
PIC
(2)
®
MCU
Section 5.4
To Internal
Logic
Sleep
P
)