PIC18F458-I/PTG Microchip Technology, PIC18F458-I/PTG Datasheet - Page 123
PIC18F458-I/PTG
Manufacturer Part Number
PIC18F458-I/PTG
Description
IC MCU FLASH 16KX16 44TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18LF242-ISO.pdf
(36 pages)
3.PIC18F248-ISO.pdf
(402 pages)
4.PIC18F248-ISO.pdf
(8 pages)
Specifications of PIC18F458-I/PTG
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
CAN, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
33
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- PIC16F616T-ISL PDF datasheet
- PIC18LF242-ISO PDF datasheet #2
- PIC18F248-ISO PDF datasheet #3
- PIC18F248-ISO PDF datasheet #4
- Current page: 123 of 402
- Download datasheet (7Mb)
14.2
The Timer1 oscillator may be used as the clock source
for Timer3. The Timer1 oscillator is enabled by setting
the T1OSCEN bit (T1CON register). The oscillator is a
low-power oscillator rated up to 50 kHz. Refer to
Section 12.0 “Timer1 Module” for Timer1 oscillator
details.
14.3
The TMR3 register pair (TMR3H:TMR3L) increments
from 0000h to 0FFFFh and rolls over to 0000h. The
TMR3 interrupt, if enabled, is generated on overflow
which is latched in interrupt flag bit TMR3IF (PIR regis-
ters). This interrupt can be enabled/disabled by setting/
clearing TMR3 Interrupt Enable bit, TMR3IE (PIE
registers).
TABLE 14-1:
© 2006 Microchip Technology Inc.
INTCON
PIR2
PIE2
IPR2
TMR3L
TMR3H
T1CON
T3CON
Legend:
Name
Timer1 Oscillator
Timer3 Interrupt
Holding Register for the Least Significant Byte of the 16-bit TMR3 Register
Holding Register for the Most Significant Byte of the 16-bit TMR3 Register
GIE/ GIEH PEIE/GIEL
x = unknown, u = unchanged, - = unimplemented, read as ‘0’. Shaded cells are not used by the Timer1 module.
RD16
RD16
Bit 7
—
—
—
REGISTERS ASSOCIATED WITH TIMER3 AS A TIMER/COUNTER
T3ECCP1 T3CKPS1 T3CKPS0
CMIF
CMIE
CMIP
Bit 6
—
T1CKPS1 T1CKPS0 T1OSCEN T1SYNC TMR1CS TMR1ON 0-00 0000 u-uu uuuu
TMR0IE
Bit 5
—
—
—
INT0IE
Bit 4
EEIF
EEIE
EEIP
T3CCP1
BCLIF
BCLIE
BCLIP
RBIE
Bit 3
14.4
If the CCP module is configured in Compare mode
to
(CCP1M3:CCP1M0 = 1011), this signal will reset
Timer3.
Timer3 must be configured for either Timer or Synchro-
nized Counter mode to take advantage of this feature. If
Timer3 is running in Asynchronous Counter mode, this
Reset operation may not work. In the event that a write
to Timer3 coincides with a special event trigger from
CCP1, the write will take precedence. In this mode of
operation, the CCPR1H:CCPR1L register pair becomes
the period register for Timer3. Refer to Section 15.0
“Capture/Compare/PWM (CCP) Modules” for CCP
details.
T3SYNC TMR3CS TMR3ON 0000 0000 uuuu uuuu
TMR0IF
Note:
LVDIF
LVDIE
LVDIP
Bit 2
generate
Resetting Timer3 Using a CCP
Trigger Output
The special event triggers from the CCP
module will not set interrupt flag bit
TMR3IF (PIR registers).
TMR3IE ECCP1IE -0-0 0000 -0-0 0000
TMR3IP ECCP1IP -1-1 1111 -1-1 1111
TMR3IF ECCP1IF -0-0 0000 -0-0 0000
INT0IF
Bit 1
a
RBIF
Bit 0
PIC18FXX8
“special
0000 000x 0000 000u
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
POR, BOR
Value on
DS41159E-page 121
event
Value on
all other
Resets
trigger”
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