PIC18F86K90-I/PT Microchip Technology, PIC18F86K90-I/PT Datasheet - Page 198

• Manufacturer Part Number: PIC18F86K90-I/PT
• Description: 64kB Flash, 4kB RAM, 1kB EE, 16MIPS, NanoWatt XLP, LCD, 5V 80 TQFP 12x12x1mm TRA
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F86K90-I/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 64MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 69
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 24x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC18F87K90 FAMILY
14.2
Timer2 can also generate an optional device interrupt.
The Timer2 output signal (TMR2 to PR2 match) pro-
vides 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>).
A range of 16 postscaler options (from 1:1 through 1:16
inclusive) can be selected with the postscaler control
bits, T2OUTPS<3:0> (T2CON<6:3>).
FIGURE 14-1:
TABLE 14-1:
DS39957B-page 198
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
T2OUTPS<3:0>
T2CKPS<1:0>
F
OSC
/4
Timer2 Interrupt
Timer2 Register
Timer2 Period Register
Bit 7
—
—
—
—
REGISTERS ASSOCIATED WITH TIMER2 AS A TIMER/COUNTER
T2OUTPS3 T2OUTPS2 T2OUTPS1 T2OUTPS0 TMR2ON T2CKPS1 T2CKPS0
TIMER2 BLOCK DIAGRAM
Internal Data Bus
ADIF
ADIE
ADIP
1:1, 1:4, 1:16
Bit 6
2
Prescaler
TMR0IE
RC1IE
RC1IP
RC1IF
Bit 5
4
TMR2
INT0IE
TX1IE
TX1IP
TX1IF
Bit 4
Preliminary
Reset
8
SSP1IE
SSP1IP
SSP1IF
RBIE
Bit 3
14.3
The unscaled output of TMR2 is available primarily to
the ECCP modules, where it is used as a time base for
operations in PWM mode.
Timer2 can optionally be used as the shift clock source
for the MSSP modules operating in SPI mode.
Additional information is provided in Section 21.0
“Master Synchronous Serial Port (MSSP) Module”.
Comparator
1:1 to 1:16
Postscaler
8
TMR2/PR2
Match
Timer2 Output
TMR1GIF
TMR1GIE
TMR1GIP
TMR0IF
Bit 2
TMR2IF
TMR2IE
TMR2IP
INT0IF
 2010 Microchip Technology Inc.
Bit 1
PR2
8
Set TMR2IF
TMR2 Output
(to PWM or MSSPx)
TMR1IE
TMR1IP
TMR1IF
Bit 0
RBIF
on Page:
Values
Reset
73
75
75
75
74
74
74