PIC18C452/JW Microchip Technology, PIC18C452/JW Datasheet - Page 20
![IC MCU EPROM 16KX16 A/D 40CDIP](/photos/6/63/66338/150-40-cdip_sml.jpg)
PIC18C452/JW
Manufacturer Part Number
PIC18C452/JW
Description
IC MCU EPROM 16KX16 A/D 40CDIP
Manufacturer
Microchip Technology
Series
PIC® 18Cr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16C770-ISO.pdf
(8 pages)
3.PIC18C242-ISO.pdf
(305 pages)
4.PIC18C242-ISO.pdf
(12 pages)
Specifications of PIC18C452/JW
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
33
Program Memory Size
32KB (16K x 16)
Program Memory Type
EPROM, UV
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
40-CDIP (0.600", 15.24mm) Window
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18C452/JW
Manufacturer:
TEMIC
Quantity:
357
- PIC16F616T-ISL PDF datasheet
- PIC16C770-ISO PDF datasheet #2
- PIC18C242-ISO PDF datasheet #3
- PIC18C242-ISO PDF datasheet #4
- Current page: 20 of 305
- Download datasheet (6Mb)
PIC18CXX2
TABLE 2-2:
An external clock source may also be connected to the
OSC1 pin in these modes, as shown in Figure 2-2.
DS39026C-page 18
These values are for design guidance only.
See notes following this table.
20.0 MHz
32.0 kHz
200 kHz
1.0 MHz
4.0 MHz
8.0 MHz
Note 1: Higher capacitance increases the stability
Mode
HS
LP
XT
2: Rs may be required in HS mode, as well
3: Since each resonator/crystal has its own
of the oscillator, but also increases the
start-up time.
as XT mode, to avoid overdriving crystals
with low drive level specification.
characteristics, the user should consult
the resonator/crystal manufacturer for
appropriate values of external compo-
nents or verify oscillator performance.
Epson CA-301 20.000M-C ± 30 PPM
32.0 kHz
1.0 MHz
4.0 MHz
4.0 MHz
8.0 MHz
Epson C-001R32.768K-A
200 kHz
200 kHz
Epson CA-301 8.000M-C
Freq
MHz
MHz
STD XTL 200.000kHz
20.0
25.0
CAPACITOR SELECTION FOR
CRYSTAL OSCILLATORS
ECS ECS-10-13-1
ECS ECS-40-20-1
Ranges Tested:
Crystals Used
47-68 pF
15-33 pF
15-33 pF
15-33 pF
33 pF
15 pF
15 pF
15 pF
15 pF
C1
± 20 PPM
± 20 PPM
± 50 PPM
± 50 PPM
± 30 PPM
47-68 pF
15-33 pF
15-33 pF
15-33 pF
33 pF
15 pF
15 pF
15 pF
15 pF
C2
FIGURE 2-2:
2.3
For timing insensitive applications, the “RC” and
"RCIO" device options offer additional cost savings.
The RC oscillator frequency is a function of the supply
voltage, the resistor (R
ues and the operating temperature. In addition to this,
the oscillator frequency will vary from unit to unit due to
normal process parameter variation. Furthermore, the
difference in lead frame capacitance between package
types will also affect the oscillation frequency, espe-
cially for low C
into account variation due to tolerance of external R
and C components used. Figure 2-3 shows how the
R/C combination is connected.
In the RC oscillator mode, the oscillator frequency
divided by 4 is available on the OSC2 pin. This signal
may be used for test purposes or to synchronize other
logic.
FIGURE 2-3:
The RCIO oscillator mode functions like the RC mode,
except that the OSC2 pin becomes an additional gen-
eral purpose I/O pin. The I/O pin becomes bit 6 of
PORTA (RA6).
Recommended values:3 k
Clock from
Ext. System
R
C
V
SS
EXT
EXT
V
DD
RC Oscillator
EXT
Open
F
OSC
values. The user also needs to take
/4
EXTERNAL CLOCK INPUT
OPERATION (HS, XT OR
LP CONFIGURATION)
RC OSCILLATOR MODE
OSC1
C
OSC2/CLKO
EXT
EXT
2001 Microchip Technology Inc.
) and capacitor (C
> 20pF
OSC1
OSC2
R
EXT
PIC18CXXX
100 k
PIC18CXXX
Internal
Clock
EXT
) val-
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