PIC16F74-I/ML Microchip Technology, PIC16F74-I/ML Datasheet - Page 357

• Manufacturer Part Number: PIC16F74-I/ML
• Description: IC MCU FLASH 4KX14 A/D 44QFN
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F74-I/ML

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Size: 7KB (4K x 14)
• Program Memory Type: FLASH
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-QFN
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 192 B
• Interface Type: I2C, SPI, USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 33
• Number Of Timers: 3 bit
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: ICE2000, DM163022
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8
• For Use With: XLT44QFN2 - SOCKET TRAN ICE 44QFN/40DIPAC164322 - MODULE SOCKET MPLAB PM3 28/44QFN444-1001 - DEMO BOARD FOR PICMICRO MCU
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

18.7
1997 Microchip Technology Inc.
Initialization
Example 18-2
Example 18-3
load into the SPBRG register is dependent on the desired baud rate and the device frequency.
Example 18-2:
Example 18-3:
BSF
MOVLW
MOVWF
MOVLW
MOVWF
BSF
BSF
BCF
MOVLW
MOVWF
BSF
MOVLW
MOVWF
MOVLW
MOVWF
BSF
BSF
BCF
MOVLW
MOVWF
STATUS,RP0
<baudrate>
SPBRG
0x40
TXSTA
PIE1,TXIE
PIE1,RCIE
STATUS,RP0
0x90
RCSTA
STATUS,RP0
<baudrate>
SPBRG
0xB0
TXSTA
PIE1,TXIE
PIE1,RCIE
STATUS,RP0
0x90
RCSTA
is for the synchronous mode. In both examples the data is 8-bits, and the value to
is an initialization routine for asynchronous Transmitter/Receiver mode.
Asynchronous Transmitter/Receiver
Synchronous Transmitter/Receiver
; Go to Bank1
; Set Baud rate
; 8-bit transmit, transmitter enabled,
; asynchronous mode, low speed mode
; Enable transmit interrupts
; Enable receive interrupts
; Go to Bank 0
; 8-bit receive, receiver enabled,
; serial port enabled
; Go to Bank 1
; Set Baud Rate
; Synchronous Master,8-bit transmit,
; transmitter enabled, low speed mode
; Enable transmit interrupts
; Enable receive interrupts
; Go to Bank 0
; 8-bit receive, receiver enabled,
; continuous receive, serial port enabled
Section 18. USART
DS31018A-page 18-21
18