PIC16C57C-04/P Microchip Technology Inc., PIC16C57C-04/P Datasheet - Page 17

• Manufacturer Part Number: PIC16C57C-04/P
• Description: 28 PIN, 3 KB OTP, 72 RAM, 20 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16C57C-04/P

• Cpu Speed: 10 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 20
• Memory Capacity: 2048 Bytes
• Memory Type: OTP
• Number Of Bits: 8
• Number Of Leads: 20
• Package Type: 28-pin PDIP
• Programmable Memory: 3K Bytes
• Ram Size: 72 Bytes
• Speed: 4 MHz
• Timers: 1- 8-bit
• Voltage, Range: 2.5-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

4.0
4.1
PIC16C5Xs can be operated in four different oscillator
modes. The user can program two configuration bits
(FOSC1:FOSC0) to select one of these four modes:
1.
2.
3.
4.
4.2
In XT, LP or HS modes, a crystal or ceramic resonator
is connected to the OSC1/CLKIN and OSC2/CLKOUT
pins
PIC16C5X oscillator design requires the use of a paral-
lel cut crystal. Use of a series cut crystal may give a fre-
quency out 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:
Note 1: See Capacitor Selection tables for
Note:
2002 Microchip Technology Inc.
LP:
XT:
HS:
RC:
to
C2
C1
2: A series resistor (RS) may be required
3: RF varies with the Oscillator mode cho-
OSCILLATOR
CONFIGURATIONS
Oscillator Types
Crystal Oscillator/Ceramic
Resonators
(1)
(1)
Not all oscillator selections available for all
parts. See Section 9.1.
establish
recommended values of C1 and C2.
for AT strip cut crystals.
sen (approx. value = 10 M ).
RS
XTAL
(2)
Low Power Crystal
Crystal/Resonator
High Speed Crystal/Resonator
Resistor/Capacitor
OSC2
OSC1
CRYSTAL/CERAMIC
RESONATOR OPERATION
(HS, XT OR LP OSC
CONFIGURATION)
oscillation
RF
(3)
(Figure 4-1).
PIC16C5X
To internal
SLEEP
logic
The
Preliminary
FIGURE 4-2:
TABLE 4-1:
TABLE 4-2:
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.
Note 1: For V
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 specification.
Since each crystal has its own characteristics, the
user should consult the crystal manufacturer for
appropriate values of external components.
Note:
Type
Type
Clock from
ext. system
Osc
Osc
HS
HS
XT
LP
XT
Open
recommended.
Resonator
If you change from this device to another
device, please verify oscillator characteris-
tics in your application.
16.0 MHz
32 kHz
2.0 MHz
4.0 MHz
8.0 MHz
455 kHz
100 kHz
200 kHz
455 kHz
Crystal
20 MHz
1 MHz
2 MHz
4 MHz
4 MHz
8 MHz
Freq
Freq
DD
CAPACITOR SELECTION FOR
CERAMIC RESONATORS -
PIC16C5X, PIC16CR5X
CAPACITOR SELECTION FOR
CRYSTAL OSCILLATOR -
PIC16C5X, PIC16CR5X
(1)
> 4.5V, C1 = C2
EXTERNAL CLOCK INPUT
OPERATION (HS, XT OR
LP OSC
CONFIGURATION)
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
PIC16C5X
10 pF
15 pF
15 pF
15 pF
15 pF
15 pF
15 pF
OSC2
OSC1
C1
C1
PIC16C5X
DS30453D-page 15
30 pF is
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
C2
C2