PIC18F2420-I/ML Microchip Technology, PIC18F2420-I/ML Datasheet - Page 234

• Manufacturer Part Number: PIC18F2420-I/ML
• Description: IC PIC MCU FLASH 8KX16 28QFN
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F2420-I/ML

• Program Memory Type: FLASH
• Program Memory Size: 16KB (8K x 16)
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• 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: 25
• Eeprom Size: 256 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 768 B
• Interface Type: EUSART, I2C, MSSP, SPI
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 25
• Number Of Timers: 1 x 8
• Operating Supply Voltage: 2 V to 5.5 V
• 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: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DM163014, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit
• Package: 28QFN EP
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 40 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT28QFN4 - SOCKET TRANS ICE 28QFN W/CABLEAC164322 - MODULE SOCKET MPLAB PM3 28/44QFN
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC18F2420/2520/4420/4520
19.8
An A/D conversion can be started by the Special Event
Trigger of the CCP2 module. This requires that the
CCP2M<3:0> bits (CCP2CON<3:0>) be programmed
as ‘1011’ and that the A/D module is enabled (ADON
bit is set). When the trigger occurs, the GO/DONE bit
will be set, starting the A/D acquisition and conversion,
and the Timer1 (or Timer3) counter will be reset to zero.
Timer1 (or Timer3) is reset to automatically repeat the
A/D acquisition period with minimal software overhead
(moving ADRESH:ADRESL to the desired location).
TABLE 19-2:
DS39631E-page 232
INTCON
PIR1
PIE1
IPR1
PIR2
PIE2
IPR2
ADRESH
ADRESL
ADCON0
ADCON1
ADCON2
PORTA
TRISA
PORTB
TRISB
LATB
PORTE
TRISE
LATE
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used for A/D conversion.
Note 1:
Name
(4)
2:
3:
4:
(4)
(4)
Use of the CCP2 Trigger
These bits are unimplemented on 28-pin devices; always maintain these bits clear.
PORTA<7:6> and their direction bits are individually configured as port pins based on various primary
oscillator modes. When disabled, these bits read as ‘0’.
RE3 port bit is available only as an input pin when the MCLRE Configuration bit is ‘0’.
These registers are not implemented on 28-pin devices.
PORTB Data Direction Register
PORTB Data Latch Register (Read and Write to Data Latch)
GIE/GIEH PEIE/GIEL TMR0IE
A/D Result Register High Byte
A/D Result Register Low Byte
TRISA7
PSPIE
PSPIP
PSPIF
OSCFIF
OSCFIE
OSCFIP
ADFM
RA7
Bit 7
RB7
IBF
—
—
—
—
REGISTERS ASSOCIATED WITH A/D OPERATION
(2)
(1)
(1)
(1)
(2)
TRISA6
RA6
CMIE
CMIP
CMIF
ADIF
ADIE
ADIP
Bit 6
OBF
RB6
—
—
—
—
—
(2)
(2)
PORTA Data Direction Register
VCFG1
ACQT2
CHS3
RCIF
RCIE
RCIP
IBOV
Bit 5
RA5
RB5
—
—
—
—
—
PSPMODE
VCFG0
ACQT1
INT0IE
CHS2
TXIE
TXIP
EEIF
EEIE
EEIP
Bit 4
TXIF
RA4
RB4
—
—
PCFG3
ACQT0
SSPIF
SSPIE
SSPIP
BCLIE
BCLIP
RE3
BCLIF
CHS1
The appropriate analog input channel must be selected
and the minimum acquisition period is either timed by
the user, or an appropriate T
the Special Event Trigger sets the GO/DONE bit (starts
a conversion).
If the A/D module is not enabled (ADON is cleared), the
Special Event Trigger will be ignored by the A/D
module, but will still reset the Timer1 (or Timer3)
counter.
RBIE
Bit 3
RA3
RB3
—
—
(3)
PORTE Data Latch Register
TMR0IF
CCP1IF
CCP1IE
CCP1IP
HLVDIF
HLVDIE
HLVDIP
TRISE2
PCFG2
ADCS2
CHS0
Bit 2
RA2
RB2
RE2
GO/DONE
TMR2IF
TMR2IE
TMR2IP
TMR3IF
TMR3IE
TMR3IP
TRISE1
PCFG1
ADCS1
INT0IF
Bit 1
© 2008 Microchip Technology Inc.
RA1
RB1
RE1
ACQ
time is selected before
TMR1IF
TMR1IE
TMR1IP
CCP2IF
CCP2IE
CCP2IP
TRISE0
PCFG0
ADCS0
ADON
RBIF
Bit 0
RA0
RB0
RE0
on page
Values
Reset
49
52
52
52
52
52
52
51
51
51
51
51
52
52
52
52
52
52
52
52