PIC18F1220-H/ML Microchip Technology, PIC18F1220-H/ML Datasheet - Page 143
PIC18F1220-H/ML
Manufacturer Part Number
PIC18F1220-H/ML
Description
IC MCU 8BIT 4KB FLASH 28QFN
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheet
1.PIC18F1220-ISO.pdf
(308 pages)
Specifications of PIC18F1220-H/ML
Core Processor
PIC
Core Size
8-Bit
Speed
25MHz
Connectivity
UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
16
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 7x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 150°C
Package / Case
28-VQFN Exposed Pad
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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To set up an Asynchronous Transmission:
1.
2.
3.
4.
FIGURE 16-2:
FIGURE 16-3:
© 2007 Microchip Technology Inc.
Reg. Empty Flag)
Reg. Empty Flag)
Write to TXREG
(Transmit Buffer
Initialize the SPBRGH:SPBRG 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 TXIE.
If 9-bit transmission is desired, set transmit bit
TX9. Can be used as address/data bit.
(Transmit Shift
CK/INT1 (pin)
RB1/AN5/TX/
BRG Output
(Shift Clock)
BRG16
TRMT bit
TXIF bit
TXIE
Interrupt
SPBRGH
Baud Rate Generator
TXEN
TXIF
EUSART TRANSMIT BLOCK DIAGRAM
ASYNCHRONOUS TRANSMISSION
Word 1
Transmit Shift Reg
Word 1
Baud Rate CLK
SPBRG
1 T
CY
Start bit
MSb
(8)
TX9D
TXREG Register
bit 0
TSR Register
TX9
• • •
8
Data Bus
bit 1
Word 1
5.
6.
7.
If using interrupts, ensure that the GIE and PEIE bits in
the INTCON register (INTCON<7:6>) are set.
Enable the transmission by setting bit TXEN,
which will also set bit TXIF.
If 9-bit transmission is selected, the ninth bit
should be loaded in bit TX9D.
Load data to the TXREG register (starts
transmission).
LSb
0
PIC18F1220/1320
TRMT
and Control
Pin Buffer
bit 7/8
SPEN
RB1/AN5/TX/CK/INT1 pin
Stop bit
DS39605F-page 141
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