PIC18LF4680-I/PT Microchip Technology, PIC18LF4680-I/PT Datasheet - Page 7
![IC MCU FLASH 32KX16 44TQFP](/photos/6/82/68251/c04-076_pt_sml.jpg)
PIC18LF4680-I/PT
Manufacturer Part Number
PIC18LF4680-I/PT
Description
IC MCU FLASH 32KX16 44TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F2221-ISO.pdf
(46 pages)
3.PIC18F4585-IPT.pdf
(482 pages)
4.PIC18F4585-IPT.pdf
(14 pages)
5.PIC18F4585-IPT.pdf
(8 pages)
6.PIC18F4585-IPT.pdf
(12 pages)
7.PIC18F4585-IPT.pdf
(4 pages)
Specifications of PIC18LF4680-I/PT
Core Size
8-Bit
Program Memory Size
64KB (32K x 16)
Core Processor
PIC
Speed
40MHz
Connectivity
CAN, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
36
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
3.25K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Controller Family/series
PIC18
No. Of I/o's
36
Eeprom Memory Size
1024Byte
Ram Memory Size
3328Byte
Cpu Speed
40MHz
No. Of Timers
4
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18LF4680-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
20. Module: EUSART
21. Module: Timer1/Timer3
22. Module: EUSART
© 2007 Microchip Technology Inc.
When performing back-to-back transmission in
9-bit mode (TX9D bit in the TXSTA register is
set), an ongoing transmission’s timing can be
corrupted if the TX9D bit (for the next transmis-
sion) is not written immediately following the
setting of TXIF. This is because any write to the
TXSTA register results in a reset of the Baud
Rate Generator which will effect any ongoing
transmission.
Work around
Load TX9D just after TXIF is set, either by polling
TXIF or by writing TX9D at the beginning of the
Interrupt Service Routine, or only write to TX9D
when
(TRMT = 1).
Date Codes that pertain to this issue:
All engineering and production devices.
When Timer1/Timer3 is operating in 16-bit mode
and the prescale setting is not 1:1, a write to the
TMR1H/TMR3H Buffer registers may lengthen the
duration of the period between the increments of
the timer for the period in which TMR1H/TMR3H
was written. It does not change the actual prescale
value.
Work around
Do not write to TMR1H/TMR3H while Timer1/
Timer3 is running, or else write to TMR1L/TMR3L
immediately following a write to TMR1H/TMR3H.
Do not write to TMR1H/TMR3H and then wait for
another event before also updating TMR1L/TMR3L.
Date Codes that pertain to this issue:
All engineering and production devices.
The EUSART auto-baud feature may periodically
measure the incoming baud rate incorrectly. The
rate of incorrect baud rate measurements will
depend on the frequency of the incoming
synchronization byte and the system clock
frequency.
Work around
None.
Date Codes that pertain to this issue:
All engineering and production devices.
a
transmission
is
not
in
PIC18F2585/2680/4585/4680
progress
23. Module: EUSART
In rare situations, one or more extra zero bytes
have been observed in a packet transmitted by the
module operating in Asynchronous mode. The
actual data is not lost or corrupted, only unwanted
(extra) zero bytes are observed in the packet.
This situation has only been observed when the
contents of the transmit buffer TXREG are trans-
ferred to the TSR during the transmission of a Stop
bit. For this to occur, three things must happen in
the same instruction cycle:
• TXREG is written to,
• the baud rate counter overflows (at the end of
• a Stop bit is being transmitted (shifted out of
Work around
If possible, do not use the module’s double buffer
capability. Instead, load the TXREG register when
the TRMT bit (TXSTA<1>) is set, indicating the
TSR is empty.
If double-buffering is used and back-to-back
transmission is performed, then load TXREG
immediately after TXIF is set or wait 1-bit time after
TXIF is set. Both solutions prevent writing TXREG
while a Stop bit is transmitted. Note that TXIF is set
at the beginning of the Stop bit transmission.
If transmission is intermittent, then do the
following:
• Wait for the TRMT bit to be set before loading
• Alternatively, use a free timer resource to time
Date Codes that pertain to this issue:
All engineering and production devices.
the bit period), and
TSR).
TXREG.
the baud period. Set up the timer to overflow at
the end of the Stop bit, then start the timer
when you load the TXREG. Do not load the
TXREG when timer is about to overflow.
DS80202G-page 7