PIC18LF4450T-I/PT Microchip Technology, PIC18LF4450T-I/PT Datasheet - Page 124

• Manufacturer Part Number: PIC18LF4450T-I/PT
• Description: IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,TQFP,44PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18LF4450T-I/PT

• Rohs Compliant: YES
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: UART/USART, USB
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 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
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC18F2450/4450
12.2
Timer2 also can generate an optional device interrupt.
The Timer2 output signal (TMR2 to PR2 match)
provides the input for the 4-bit output counter/
postscaler. This counter generates the TMR2 match
interrupt flag which is latched in TMR2IF (PIR1<1>).
The interrupt is enabled by setting the TMR2 Match
Interrupt Enable bit, TMR2IE (PIE1<1>).
FIGURE 12-1:
TABLE 12-1:
DS39760D-page 122
INTCON GIE/GIEH PEIE/GIEL
PIR1
PIE1
IPR1
TMR2
T2CON
PR2
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used by the Timer2 module.
Name
T2OUTPS3:T2OUTPS0
T2CKPS1:T2CKPS0
F
OSC
Timer2 Interrupt
Timer2 Register
Timer2 Period Register
/4
Bit 7
—
—
—
—
REGISTERS ASSOCIATED WITH TIMER2 AS A TIMER/COUNTER
T2OUTPS3 T2OUTPS2 T2OUTPS1 T2OUTPS0 TMR2ON T2CKPS1 T2CKPS0
TIMER2 BLOCK DIAGRAM
ADIF
ADIE
ADIP
Bit 6
Internal Data Bus
1:1, 1:4, 1:16
2
Prescaler
TMR0IE
RCIF
RCIE
RCIP
Bit 5
4
INT0IE
TXIE
TXIP
Bit 4
TXIF
TMR2
Reset
8
RBIE
Bit 3
A range of 16 postscale options (from 1:1 through 1:16
inclusive) can be selected with the postscaler control
bits, T2OUTPS3:T2OUTPS0 (T2CON<6:3>).
12.3
The unscaled output of TMR2 is available primarily to
the CCP module, where it is used as a time base for
operations in PWM mode.
—
—
—
Comparator
1:1 to 1:16
Postscaler
TMR2 Output
TMR0IF
CCP1IE
CCP1IP
CCP1IF
8
TMR2/PR2
Match
Bit 2
TMR2IE
TMR2IP
TMR2IF
INT0IF
Bit 1
© 2008 Microchip Technology Inc.
PR2
8
TMR1IE
TMR1IP
TMR1IF
Set TMR2IF
TMR2 Output
(to PWM)
RBIF
Bit 0
on Page:
Values
Reset
49
51
51
51
50
50
50