PIC16F721-E/SO Microchip Technology, PIC16F721-E/SO Datasheet - Page 126

• Manufacturer Part Number: PIC16F721-E/SO
• Description: 7 KB FLASH, 256 B SRAM, 18 I/O 20 SOIC .300in TUBE
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 16Fr

Specifications of PIC16F721-E/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 17
• Program Memory Size: 7KB (4K x 14)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 12x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC16F/LF720/721
FIGURE 16-5:
TABLE 16-2:
DS41430A-page 126
INTCON
PIE1
PIR1
RCREG
RCSTA
SPBRG
TRISC
TXSTA
Legend:
Name
Note:
RX/DT pin
Rcv Shift
Reg
Rcv Buffer Reg
Read Rcv
Buffer Reg
RCREG
RCIF
(Interrupt Flag)
OERR bit
CREN
x = unknown, - = unimplemented read as ‘0’. Shaded cells are not used for asynchronous reception.
TMR1GIE
TMR1GIF
TRISC7
SPEN
BRG7
CSRC
This timing diagram shows three words appearing on the RX input. The RCREG (receive buffer) is read after the third word,
causing the OERR (overrun) bit to be set.
Bit 7
GIE
REGISTERS ASSOCIATED WITH ASYNCHRONOUS RECEPTION
Start
ASYNCHRONOUS RECEPTION
bit
TRISC6
BRG6
ADIE
Bit 6
PEIE
ADIF
RX9
TX9
bit 0
bit 1
TMR0IE
TRISC5
SREN
BRG5
TXEN
RCIE
RCIF
Bit 5
AUSART Receive Data Register
TRISC4
CREN
SYNC
BRG4
Bit 4
INTE
TXIE
TXIF
bit 7/8
Stop
bit
TRISC3
ADDEN
RABIE
SSPIE
SSPIF
BRG3
Bit 3
Word 1
RCREG
—
Start
bit
bit 0
TMR0IF
CCP1IE
CCP1IF
TRISC2
BRGH
FERR
BRG2
Bit 2
TMR2IE
TMR2IF
TRISC1
OERR
BRG1
TRMT
bit 7/8 Stop
INTF
Bit 1
Word 2
RCREG
bit
TMR1IE
TMR1IF
TRISC0
RABIF
RX9D
BRG0
TX9D
Bit 0
Start
 2010 Microchip Technology Inc.
bit
0000 000x
0000 0000
0000 0000
0000 0000
0000 000x
0000 0000
1111 1111
0000 -010
POR, BOR
Value on
bit 7/8
Stop
0000 000x
0000 0000
0000 0000
0000 0000
0000 000x
0000 0000
1111 1111
0000 -010
bit
Value on
all other
Resets