PIC18F4580-E/PT Microchip Technology, PIC18F4580-E/PT Datasheet - Page 165
![IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,TQFP,44PIN,PLASTIC](/photos/6/82/68251/c04-076_pt_sml.jpg)
PIC18F4580-E/PT
Manufacturer Part Number
PIC18F4580-E/PT
Description
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,TQFP,44PIN,PLASTIC
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F2221-ISO.pdf
(46 pages)
3.PIC18F4480-IPT.pdf
(490 pages)
4.PIC18F4480-IPT.pdf
(8 pages)
5.PIC18F4480-IPT.pdf
(6 pages)
6.PIC18F4480-IPT.pdf
(6 pages)
Specifications of PIC18F4580-E/PT
Rohs Compliant
YES
Core Processor
PIC
Core Size
8-Bit
Speed
25MHz
Connectivity
CAN, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
36
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 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F4580-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
Part Number:
PIC18F4580-E/PT
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
- PIC16F616T-ISL PDF datasheet
- PIC18F2221-ISO PDF datasheet #2
- PIC18F4480-IPT PDF datasheet #3
- PIC18F4480-IPT PDF datasheet #4
- PIC18F4480-IPT PDF datasheet #5
- PIC18F4480-IPT PDF datasheet #6
- Current page: 165 of 490
- Download datasheet (9Mb)
15.2
Timer3 can be configured for 16-bit reads and writes
(see Figure 15-2). When the RD16 control bit
(T3CON<7>) is set, the address for TMR3H is mapped
to a buffer register for the high byte of Timer3. A read
from TMR3L will load the contents of the high byte of
Timer3 into the Timer3 High Byte Buffer register. This
provides the user with the ability to accurately read all
16 bits of Timer1 without having to determine whether
a read of the high byte, followed by a read of the low
byte, has become invalid due to a rollover between
reads.
A write to the high byte of Timer3 must also take place
through the TMR3H Buffer register. The Timer3 high
byte is updated with the contents of TMR3H when a
write occurs to TMR3L. This allows a user to write all
16 bits to both the high and low bytes of Timer3 at once.
The high byte of Timer3 is not directly readable or
writable in this mode. All reads and writes must take
place through the Timer3 High Byte Buffer register.
Writes to TMR3H do not clear the Timer3 prescaler.
The prescaler is only cleared on writes to TMR3L.
15.3
The Timer1 internal oscillator may be used as the clock
source for Timer3. The Timer1 oscillator is enabled by
setting the T1OSCEN (T1CON<3>) bit. To use it as the
Timer3 clock source, the TMR3CS bit must also be set.
As previously noted, this also configures Timer3 to
increment on every rising edge of the oscillator source.
The Timer1 oscillator is described in Section 13.0
“Timer1 Module”.
TABLE 15-1:
© 2009 Microchip Technology Inc.
INTCON
PIR2
PIE2
IPR2
TMR3L
TMR3H
T1CON
T3CON
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used by the Timer3 module.
Note 1:
Name
2:
Timer3 16-Bit Read/Write Mode
Using the Timer1 Oscillator as the
Timer3 Clock Source
Timer3 Register Low Byte
Timer3 Register High Byte
These bits are available in PIC18F4X80 devices only.
These bits are available in PIC18F4X80 devices and reserved in PIC18F2X80 devices.
GIE/GIEH PEIE/GIEL
OSCFIF
OSCFIE
OSCFIP
RD16
RD16
Bit 7
REGISTERS ASSOCIATED WITH TIMER3 AS A TIMER/COUNTER
T3ECCP1
CMIF
CMIE
CMIP
T1RUN
Bit 6
(2)
(2)
(2)
(1)
T1CKPS1 T1CKPS0 T1OSCEN T1SYNC
T3CKPS1 T3CKPS0 T3CCP1
TMR0IE
Bit 5
—
—
—
PIC18F2480/2580/4480/4580
INT0IE
EEIF
EEIE
EEIP
Bit 4
BCLIE
BCLIP
BCLIF
RBIE
15.4
The TMR3 register pair (TMR3H:TMR3L) increments
from 0000h to FFFFh and overflows to 0000h. The
Timer3 interrupt, if enabled, is generated on overflow
and is latched in the interrupt flag bit, TMR3IF
(PIR2<1>). This interrupt can be enabled or disabled
by setting or clearing the Timer3 Interrupt Enable bit,
TMR3IE (PIE2<1>).
15.5
If the ECCP1 module is configured to generate a
special
(ECCP1M<3:0> = 1011), this signal will reset Timer3.
It will also start an A/D conversion if the A/D module is
enabled (see Section 16.3.4 “Special Event Trigger”
for more information.).
The module must be configured as either a timer or
synchronous counter to take advantage of this feature.
When used this way, the ECCPR2H:ECCPR2L register
pair effectively becomes a period register for Timer3.
If Timer3 is running in Asynchronous Counter mode,
the Reset operation may not work.
In the event that a write to Timer3 coincides with a
Special Event Trigger from a CCP module, the write will
take precedence.
Bit 3
Note:
(1)
Timer3 Interrupt
Resetting Timer3 Using the CCP
Special Event Trigger
T3SYNC
TMR0IF
HLVDIF
HLVDIE
HLVDIP
event
The special event triggers from the
ECCP1 module will not set the TMR3IF
interrupt flag bit (PIR1<0>).
Bit 2
trigger
TMR1CS
TMR3CS
TMR3IF
TMR3IE ECCP1IE
TMR3IP ECCP1IP
INT0IF
Bit 1
in
ECCP1IF
TMR1ON
TMR3ON
DS39637D-page 165
Compare
Bit 0
RBIF
(2)
(2)
(2)
on Page:
Values
Reset
mode
55
58
58
57
57
57
56
57
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