PIC18C252-I/SO Microchip Technology, PIC18C252-I/SO Datasheet - Page 20

• Manufacturer Part Number: PIC18C252-I/SO
• Description: IC MCU OTP 16KX16 A/D 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 18Cr

Specifications of PIC18C252-I/SO

• Core Size: 8-Bit
• Program Memory Size: 32KB (16K x 16)
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Type: OTP
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Controller Family/series: PIC18
• No. Of I/o's: 24
• Ram Memory Size: 1536Byte
• Cpu Speed: 40MHz
• No. Of Timers: 4
• Interface: I2C, SPI, USART
• Package: 28SOIC W
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 40 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 23
• Interface Type: I2C/SPI/USART
• On-chip Adc: 5-chx10-bit
• Number Of Timers: 4
• Embedded Interface Type: I2C, SPI, USART
• Rohs Compliant: Yes
• Processor Series: PIC18C
• Core: PIC
• Data Ram Size: 1536 B
• Maximum Clock Frequency: 40 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: ICE2000, DM163022, DV164136
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT28SO-1 - SOCKET TRANSITION 28SOIC 300MILI3DB18C452 - BOARD DAUGHTER ICEPIC3309-1073 - ADAPTER 28-SOIC TO 28-SOIC309-1024 - ADAPTER 28-SOIC TO 28-DIP309-1023 - ADAPTER 28-SOIC TO 28-DIP
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

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-