PIC18F442-E/PT Microchip Technology, PIC18F442-E/PT Datasheet - Page 23
![IC MCU CMOS 40MHZ 8K FLSH 44TQFP](/photos/6/82/68251/c04-076_pt_sml.jpg)
PIC18F442-E/PT
Manufacturer Part Number
PIC18F442-E/PT
Description
IC MCU CMOS 40MHZ 8K FLSH 44TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F242-ISO.pdf
(332 pages)
3.PIC18F242-ISO.pdf
(14 pages)
4.PIC18F242-ISO.pdf
(16 pages)
5.PIC18F242-ISO.pdf
(16 pages)
6.PIC18F242-ISO.pdf
(14 pages)
7.PIC18LF242-ISO.pdf
(36 pages)
Specifications of PIC18F442-E/PT
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
34
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F442-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
- PIC16F616T-ISL PDF datasheet
- PIC18F242-ISO PDF datasheet #2
- PIC18F242-ISO PDF datasheet #3
- PIC18F242-ISO PDF datasheet #4
- PIC18F242-ISO PDF datasheet #5
- PIC18F242-ISO PDF datasheet #6
- PIC18LF242-ISO PDF datasheet #7
- Current page: 23 of 332
- Download datasheet (6Mb)
2.6.1
The system clock source switching is performed under
software control. The system clock switch bit, SCS
(OSCCON<0>) controls the clock switching. When the
SCS bit is ’0’, the system clock source comes from the
main oscillator that is selected by the FOSC configura-
tion bits in Configuration Register1H. When the SCS bit
is set, the system clock source will come from the
Timer1 oscillator. The SCS bit is cleared on all forms of
RESET.
REGISTER 2-1:
© 2006 Microchip Technology Inc.
SYSTEM CLOCK SWITCH BIT
bit 7-1
bit 0
OSCCON REGISTER
bit 7
Unimplemented: Read as '0'
SCS: System Clock Switch bit
When OSCSEN configuration bit = ’0’ and T1OSCEN bit is set:
1 = Switch to Timer1 oscillator/clock pin
0 = Use primary oscillator/clock input pin
When OSCSEN and T1OSCEN are in other states:
bit is forced clear
Legend:
R = Readable bit
- n = Value at POR
U-0
—
U-0
—
W = Writable bit
’1’ = Bit is set
U-0
—
U-0
—
Note:
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
The Timer1 oscillator must be enabled and
operating to switch the system clock
source. The Timer1 oscillator is enabled by
setting the T1OSCEN bit in the Timer1
control register (T1CON). If the Timer1
oscillator is not enabled, then any write to
the SCS bit will be ignored (SCS bit forced
cleared) and the main oscillator will
continue to be the system clock source.
U-0
—
U-0
—
PIC18FXX2
x = Bit is unknown
U-0
—
DS39564C-page 21
R/W-1
SCS
bit 0
Related parts for PIC18F442-E/PT
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![PIC18F442-I/L](/photos/6/63/66325/150-44-plcc_tmb.jpg)
Part Number:
Description:
IC MCU FLASH 8KX16 EE A/D 44PLCC
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F442-I/PT](/photos/6/82/68251/c04-076_pt_tmb.jpg)
Part Number:
Description:
IC MCU FLASH 8KX16 EE A/D 44TQFP
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F442-I/P](/photos/6/61/66192/150-40-dip_tmb.jpg)
Part Number:
Description:
IC MCU FLASH 8KX16 EE A/D 40DIP
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F442-I/ML](/photos/6/81/68122/150-44-qfn_tmb.jpg)
Part Number:
Description:
IC MCU FLASH 8KX16 EE A/D 44QFN
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F442-I/PTG](/photos/6/82/68251/c04-076_pt_tmb.jpg)
Part Number:
Description:
IC PIC MCU FLASH 8KX16 44TQFP
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F442-E/P](/photos/6/61/66192/150-40-dip_tmb.jpg)
Part Number:
Description:
IC MCU CMOS 40MHZ 8K FLASH 40DIP
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F442-E/L](/photos/6/63/66325/150-44-plcc_tmb.jpg)
Part Number:
Description:
IC MCU CMOS 40MHZ 8K FLSH 44PLCC
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F442-E/ML](/photos/6/81/68122/150-44-qfn_tmb.jpg)
Part Number:
Description:
IC MCU FLASH 8KX16 EE A/D 44QFN
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F6393T-I/PT](/photos/6/81/68123/c04-066_pf_tmb.jpg)
Part Number:
Description:
PIC18F With 128-segment LCD Driver And 12-bit ADC, 8KB Flash, 768B RAM, CCP, MSS
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F6493T-I/PT](/photos/6/81/68123/c04-066_pf_tmb.jpg)
Part Number:
Description:
PIC18F With 128-segment LCD Driver And 12-bit ADC, 16KB Flash, 768B RAM, CCP, MS
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F8393T-I/PT](/images/manufacturer_photos/0/4/439/microchip_technology_tmb.jpg)
Part Number:
Description:
PIC18F With 192-segment LCD Driver And 12-bit ADC, 8KB Flash, 768B RAM, CCP, MSS
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F8493T-I/PT](/images/manufacturer_photos/0/4/439/microchip_technology_tmb.jpg)
Part Number:
Description:
PIC18F With 192-segment LCD Driver And 12-bit ADC, 16KB Flash, 768B RAM, CCP, MS
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F6585-I/L](/photos/16/12/161282/68-plcc-large-300dpi-lyrd_tmb.jpg)
Part Number:
Description:
Microcontrollers (MCU) 48KB 3328 RAM 52 I/O
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F6680-I/L](/photos/16/12/161282/68-plcc-large-300dpi-lyrd_tmb.jpg)
Part Number:
Description:
Microcontrollers (MCU) 64KB 3328 RAM 52 I/O
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F65K90T-I/MR](/photos/16/3/160368/qfn64_tmb.jpg)
Part Number:
Description:
32kB Flash, 2kB RAM, 1kB EE, NanoWatt XLP, LCD 64 QFN 9x9x0.9mm T/R
Manufacturer:
Microchip Technology
Datasheet: