PIC18F86J90-I/PT Microchip Technology, PIC18F86J90-I/PT Datasheet - Page 260
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PIC18F86J90-I/PT
Manufacturer Part Number
PIC18F86J90-I/PT
Description
IC PIC MCU FLASH 64KB 80-TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC18F67J90-IPT.pdf
(450 pages)
2.PIC18F67J90-IPT.pdf
(3 pages)
3.PIC18F67J90-IPT.pdf
(10 pages)
4.PIC18F66J90-IPT.pdf
(444 pages)
Specifications of PIC18F86J90-I/PT
Program Memory Type
FLASH
Program Memory Size
64KB (32K x 16)
Package / Case
80-TFQFP
Core Processor
PIC
Core Size
8-Bit
Speed
48MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LCD, LVD, POR, PWM, WDT
Number Of I /o
67
Ram Size
3.8K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 3.6 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
3923 B
Interface Type
AUSART, EUSART, I2C, SPI
Maximum Clock Frequency
48 MHz
Number Of Programmable I/os
67
Number Of Timers
4
Operating Supply Voltage
2.65 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 12 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
AC162079 - HEADER MPLAB ICD2 18F85J90 64/80AC164328 - MODULE SKT FOR 80TQFP
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F86J90-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
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implemented in software and stored as the 9th data bit.
PIC18F87J90 FAMILY
18.3
The Asynchronous mode of operation is selected by
clearing the SYNC bit (TXSTA1<4>). In this mode, the
EUSART uses standard Non-Return-to-Zero (NRZ) for-
mat (one Start bit, eight or nine data bits and one Stop
bit). The most common data format is 8 bits. An on-chip
dedicated 8-bit/16-bit Baud Rate Generator can be
used to derive standard baud rate frequencies from the
oscillator.
The EUSART transmits and receives the LSb first. The
EUSART’s transmitter and receiver are functionally
independent, but use the same data format and baud
rate. The Baud Rate Generator produces a clock, either
x16 or x64 of the bit shift rate, depending on the BRGH
and BRG16 bits (TXSTA1<2> and BAUDCON1<3>).
Parity is not supported by the hardware but can be
When operating in Asynchronous mode, the EUSART
module consists of the following important elements:
• Baud Rate Generator
• Sampling Circuit
• Asynchronous Transmitter
• Asynchronous Receiver
• Auto-Wake-up on Sync Break Character
• 12-Bit Break Character Transmit
• Auto-Baud Rate Detection
18.3.1
The EUSART transmitter block diagram is shown in
Figure 18-3. The heart of the transmitter is the Transmit
(Serial) Shift register (TSR). The Shift register obtains
its data from the Read/Write Transmit Buffer register,
TXREG1. The TXREG1 register is loaded with data in
software. The TSR register is not loaded until the Stop
bit has been transmitted from the previous load. As
soon as the Stop bit is transmitted, the TSR is loaded
with new data from the TXREG1 register (if available).
FIGURE 18-3:
DS39933C-page 258
EUSART Asynchronous Mode
BRG16
EUSART ASYNCHRONOUS
TRANSMITTER
TX1IE
Interrupt
EUSART TRANSMIT BLOCK DIAGRAM
SPBRGH1
Baud Rate Generator
TX1IF
TXEN
Baud Rate CLK
SPBRG1
MSb
(8)
TXREG1 Register
Preliminary
TSR Register
TX9D
• • •
TX9
8
Data Bus
Once the TXREG1 register transfers the data to the
TSR register (occurs in one T
is empty and the TX1IF flag bit (PIR1<4>) is set. This
interrupt can be enabled or disabled by setting or clear-
ing the interrupt enable bit, TX1IE (PIE1<4>). TX1IF
will be set regardless of the state of TX1IE; it cannot be
cleared in software. TX1IF is also not cleared immedi-
ately upon loading TXREG1, but becomes valid in the
second instruction cycle following the load instruction.
Polling TX1IF immediately following a load of TXREG1
will return invalid results.
While TX1IF indicates the status of the TXREG1
register, another bit, TRMT (TXSTA1<1>), shows the
status of the TSR register. TRMT is a read-only bit
which is set when the TSR register is empty. No inter-
rupt logic is tied to this bit so the user has to poll this bit
in order to determine if the TSR register is empty.
To set up an Asynchronous Transmission:
1.
2.
3.
4.
5.
6.
7.
8.
Note 1: The TSR register is not mapped in data
Initialize the SPBRGH1:SPBRG1 registers for
the appropriate baud rate. Set or clear the
BRGH and BRG16 bits, as required, to achieve
the desired baud rate.
Enable the asynchronous serial port by clearing
bit, SYNC, and setting bit, SPEN.
If interrupts are desired, set enable bit, TX1IE.
If 9-bit transmission is desired, set transmit bit,
TX9; can be used as address/data bit.
Enable the transmission by setting bit, TXEN,
which will also set bit, TX1IF.
If 9-bit transmission is selected, the ninth bit
should be loaded in bit, TX9D.
Load data to the TXREG1 register (starts
transmission).
If using interrupts, ensure that the GIE and PEIE
bits in the INTCON register (INTCON<7:6>) are
set.
LSb
2: Flag bit, TX1IF, is set when enable bit,
0
memory so it is not available to the user.
TXEN, is set.
TRMT
and Control
Pin Buffer
© 2009 Microchip Technology Inc.
SPEN
CY
), the TXREG1 register
TX1 pin
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