PIC18F4420T-I/PT Microchip Technology, PIC18F4420T-I/PT Datasheet - Page 31

• Manufacturer Part Number: PIC18F4420T-I/PT
• Description: IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,TQFP,44PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F4420T-I/PT

• Rohs Compliant: YES
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 36
• 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 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TABLE 5-2:
TABLE 5-3:
 2010 Microchip Technology Inc.
Legend:
Note 1:
IESO
FCMEN
FOSC<3:0>
FOSC<3:0>
Note 1:
Bit Name
2:
2:
The ‘x’s in DEVID1 contain the device revision code.
DEVID1 bit 4 is used to determine the device type (REV4 = 0).
DEVID1 bit 4 is used to determine the device type (REV4 = 1).
The BBSIZ bits, BBSIZ<1:0> and BBSIZ<2:1> bits, cannot be changed once any of the following
code-protect bits are enabled: CPB or CP0, WRTB or WRT0, EBTRB or EBTR0.
Not available in PIC18FXX8X and PIC18F2450/4450 devices.
PIC18F4620
PIC18F4680
PIC18F4682
PIC18F4685
Device
DEVICE ID VALUES (CONTINUED)
PIC18F2XXX/4XXX FAMILY BIT DESCRIPTIONS
Configuration
CONFIG1H
CONFIG1H
CONFIG1H
CONFIG1H
Words
Internal External Switchover bit
1 = Internal External Switchover mode is enabled
0 = Internal External Switchover mode is disabled
Fail-Safe Clock Monitor Enable bit
1 = Fail-Safe Clock Monitor is enabled
0 = Fail-Safe Clock Monitor is disabled
Oscillator Selection bits
11xx = External RC oscillator, CLKO function on RA6
101x = External RC oscillator, CLKO function on RA6
1001 = Internal RC oscillator, CLKO function on RA6, port function on RA7
1000 = Internal RC oscillator, port function on RA6, port function on RA7
0111 = External RC oscillator, port function on RA6
0110 = HS oscillator, PLL is enabled (Clock Frequency = 4 x FOSC1)
0101 = EC oscillator, port function on RA6
0100 = EC oscillator, CLKO function on RA6
0011 = External RC oscillator, CLKO function on RA6
0010 = HS oscillator
0001 = XT oscillator
0000 = LP oscillator
Oscillator Selection bits 
(PIC18F2455/2550/4455/4550, PIC18F2458/2553/4458/4553 and
PIC18F2450/4450 devices only)
111x = HS oscillator, PLL is enabled, HS is used by USB
110x = HS oscillator, HS is used by USB
1011 = Internal oscillator, HS is used by USB
1010 = Internal oscillator, XT is used by USB
1001 = Internal oscillator, CLKO function on RA6, EC is used by USB
1000 = Internal oscillator, port function on RA6, EC is used by USB
0111 = EC oscillator, PLL is enabled, CLKO function on RA6, EC is used by USB
0110 = EC oscillator, PLL is enabled, port function on RA6, EC is used by USB
0101 = EC oscillator, CLKO function on RA6, EC is used by USB
0100 = EC oscillator, port function on RA6, EC is used by USB
001x = XT oscillator, PLL is enabled, XT is used by USB
000x = XT oscillator, XT is used by USB
PIC18F2XXX/4XXX FAMILY
DEVID2
0Ch
0Eh
27h
27h
Device ID Value
Description
000x xxxx
100x xxxx
010x xxxx
011x xxxx
DEVID1
DS39622L-page 31