PIC18F1230-I/SS Microchip Technology, PIC18F1230-I/SS Datasheet - Page 158

• Manufacturer Part Number: PIC18F1230-I/SS
• Description: Microcontroller
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F1230-I/SS

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• 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: 128 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-SSOP
• Package: 20SSOP
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 40 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 16
• Interface Type: USART
• On-chip Adc: 4-chx10-bit
• Number Of Timers: 2
• Processor Series: PIC18F
• Core: PIC
• Data Ram Size: 256 B
• Maximum Clock Frequency: 40 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, DV164136
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164307 - MODULE SKT FOR PM3 28SSOP
• Lead Free Status / Rohs Status: Details

PIC18F1230/1330
FIGURE 15-3:
FIGURE 15-4:
FIGURE 15-5:
DS39758D-page 158
Note: This timing diagram shows two consecutive transmissions.
(Interrupt Reg. Flag)
Reg. Empty Flag)
Reg. Empty Flag)
Write to TXREG
(Transmit Buffer
Reg. Empty Flag)
(Transmit Shift
Write to TXREG
(Transmit Shift
BRG Output
(Shift Clock)
BRG Output
(Shift Clock)
TRMT bit
TX (pin)
TXIF bit
TRMT bit
BRG16
TX (pin)
TXIF bit
TXIE
Interrupt
1 T
EUSART TRANSMIT BLOCK DIAGRAM
ASYNCHRONOUS TRANSMISSION
ASYNCHRONOUS TRANSMISSION (BACK-TO-BACK)
SPBRGH
Baud Rate Generator
CY
TXIF
Word 1
Transmit Shift Reg
Transmit Shift Reg.
TXEN
Word 1
Word 1
Word 1
Baud Rate CLK
1 T
SPBRG
CY
Start bit
Start bit
Word 2
MSb
(8)
1 T
CY
bit 0
bit 0
TXREG Register
TSR Register
TX9D

bit 1
TX9
8
Data Bus
Word 1
bit 1
Word 1
LSb
0
TRMT
bit 7/8
bit 7/8
and Control
Pin Buffer
Word 2
Transmit Shift Reg.
 2009 Microchip Technology Inc.
Stop bit
SPEN
Stop bit
Start bit
Word 2
TX pin
bit 0