PIC16F54T-I/SO Microchip Technology, PIC16F54T-I/SO Datasheet - Page 23

• Manufacturer Part Number: PIC16F54T-I/SO
• Description: IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,SOP,18PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F54T-I/SO

• Rohs Compliant: YES
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: POR, WDT
• Number Of I /o: 12
• Program Memory Size: 768B (512 x 12)
• Program Memory Type: FLASH
• Ram Size: 25 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 18-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.0
4.1
The PIC16F5X devices can be operated in four differ-
ent oscillator modes. The user can program two Con-
figuration bits (FOSC1:FOSC0) to select one of these
four modes:
• LP:
• XT:
• HS:
• RC:
4.2
In XT, LP or HS modes, a crystal or ceramic resonator
is connected to the OSC1/CLKIN and OSC2/CLKOUT
pins
PIC16F5X oscillator design requires the use of a
parallel cut crystal. Use of a series cut crystal may give
a frequency outside of the crystal manufacturers
specifications. When in XT, LP or HS modes, the
device can have an external clock source drive the
OSC1/CLKIN pin (Figure 4-2).
FIGURE 4-1:
FIGURE 4-2:
© 2007 Microchip Technology Inc.
Note 1:
Clock from
ext. system
to
2:
3:
C2
C1
Open
OSCILLATOR
CONFIGURATIONS
Oscillator Types
Low-power Crystal
Crystal/Resonator
High-speed Crystal/Resonator
Resistor/Capacitor
Crystal Oscillator/Ceramic
Resonators
(1)
(1)
establish
See Capacitor Selection tables for
recommended values of C1 and C2.
A series resistor (RS) may be required.
RF varies with the Oscillator mode chosen
(approx. value = 10 MΩ).
RS
XTAL
(2)
OSC2
OSC1
CRYSTAL/CERAMIC
RESONATOR OPERATION
(HS, XT OR LP OSC
CONFIGURATION)
EXTERNAL CLOCK INPUT
OPERATION (HS, XT OR LP
OSC CONFIGURATION)
oscillation
OSC2
OSC1
RF
(3)
PIC16F5X
(Figure 4-1).
PIC16F5X
To internal
Sleep
logic
The
TABLE 4-1:
TABLE 4-2:
XT
HS
These values are for design guidance only. Since
each resonator has its own characteristics, the user
should consult the resonator manufacturer for
appropriate values of external components.
LP
XT
HS
Note 1:
These values are for design guidance only. Rs may
be required in HS mode, as well as XT mode, to
avoid overdriving crystals with low drive level specifi-
cations. Since each crystal has its own characteris-
tics, the user should consult the crystal manufacturer
for appropriate values of external components.
Type
Type
Osc
Osc
Note 1: This device has been designed to perform
2: The user should verify that the device
Resonator
For V
recommended.
16.0 MHz
32 kHz
2.0 MHz
4.0 MHz
8.0 MHz
to the parameters of its data sheet. It has
been tested to an electrical specification
designed to determine its conformance
with these parameters. Due to process
differences in the manufacture of this
device, this device may have different
performance
earlier version. These differences may
cause this device to perform differently in
your application than the earlier version of
this device.
oscillator
expected. Adjusting the loading capacitor
values and/or the Oscillator mode may be
required.
455 kHz
100 kHz
200 kHz
455 kHz
20 MHz
Crystal
1 MHz
2 MHz
4 MHz
4 MHz
8 MHz
Freq.
Freq.
DD
CAPACITOR SELECTION FOR
CERAMIC RESONATORS
CAPACITOR SELECTION FOR
CRYSTAL OSCILLATOR
(1)
> 4.5V, C1 = C2 ≈ 30 pF is
starts
Cap. Range
Cap.Range
68-100 pF
15-33 pF
10-22 pF
10-22 pF
15-30 pF
15-30 pF
15-30 pF
15-30 pF
characteristics
10 pF
15 pF
15 pF
15 pF
15 pF
15 pF
15 pF
PIC16F5X
C1
C1
and
DS41213D-page 21
performs
Cap. Range
Cap. Range
200-300 pF
100-200 pF
68-100 pF
15-100 pF
15-33 pF
10-22 pF
10-22 pF
15-30 pF
10 pF
15 pF
15 pF
15 pF
15 pF
15 pF
15 pF
than
C2
C2
as
its