PIC16F877A-I/ML Microchip Technology, PIC16F877A-I/ML Datasheet - Page 352

• Manufacturer Part Number: PIC16F877A-I/ML
• Description: IC MCU FLASH 8KX14 A/D 44QFN
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F877A-I/ML

• Core Size: 8-Bit
• Program Memory Size: 14KB (8K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-QFN
• Controller Family/series: PIC16F
• No. Of I/o's: 33
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 368Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 368 B
• Interface Type: I2C, SPI, USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 33
• Number Of Timers: 1 x 16 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: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163022, DV164120
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 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: Details

PICmicro MID-RANGE MCU FAMILY
DS31018A-page 18-16
PIR
RCSTA
TXREG
PIE
TXSTA
SPBRG Baud Rate Generator Register
Legend: x = unknown, - = unimplemented, read as '0'.
Note 1: The position of this bit is device dependent.
RX/DT pin
TX/CK pin
TXREG reg
Write to
Name
(Interrupt flag)
TXEN bit
TRMT bit
TXIF bit
TRMT
TXREG reg
Shaded cells are not used for Synchronous Master Transmission.
RX/DT pin
TX/CK pin
TRMT bit
Q1Q2 Q3Q4 Q1 Q2Q3 Q4Q1 Q2Q3 Q4Q1 Q2Q3 Q4Q1 Q2 Q3Q4
CSRC
SPEN
'1'
TXIF bit
Bit 7
Write to
TX7
Note: Sync master mode; SPBRG = '0'. Continuous transmission of two 8-bit words.
Write word1
Steps to follow when setting up a Synchronous Master Transmission:
1.
2.
3.
4.
5.
6.
7.
Table 18-8: Registers Associated with Synchronous Master Transmission
Figure 18-10:
Figure 18-11:
Bit 6
RX9
TX6
TX9
Initialize the SPBRG register for the appropriate baud rate (Subsection
Baud Rate Generator (BRG)”
Enable the synchronous master serial port by setting the SYNC, SPEN, and CSRC bits.
If interrupts are desired, then set the TXIE bit.
If 9-bit transmission is desired, then set the TX9 bit.
Enable the transmission by setting the TXEN bit.
If 9-bit transmission is selected, the ninth bit should be loaded in the TX9D bit.
Start transmission by loading data to the TXREG register.
SREN CREN
TXEN SYNC
Bit 0
Bit 5
TX5
Write word2
WORD 1
Bit 1
Bit 4
TX4
bit0
Synchronous Transmission
Synchronous Transmission (Through TXEN)
TXIF
TXIE
Bit 2
Bit 3
TX3
—
—
(1)
(1)
bit1
BRGH
FERR
Bit 2
).
TX2
Q3Q4 Q1Q2 Q3Q4 Q1Q2 Q3Q4 Q1Q2 Q3 Q4Q1 Q2Q3 Q4Q1 Q2Q3 Q4Q1 Q2Q3 Q4
bit2
Bit 7
OERR
TRMT
Bit 1
TX1
Bit 0
RX9D
WORD 2
TX9D
Bit 0
TX0
bit6
Bit 1
0000 -00x
0000 0000
0000 -010
0000 0000
Value on:
1997 Microchip Technology Inc.
POR,
BOR
0
0
bit7
18.3 “USART
other Resets
Value on all
0000 -00x
0000 0000
0000 -010
0000 0000
Bit 7
0
0
'1'