PIC16F721-I/SO Microchip Technology, PIC16F721-I/SO Datasheet - Page 146

• Manufacturer Part Number: PIC16F721-I/SO
• Description: MCU PIC 4K FLASH 20-SOIC
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 16Fr

Specifications of PIC16F721-I/SO

• Core Size: 8-Bit
• Program Memory Size: 7KB (4K x 14)
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Core Processor: PIC
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART
• Number Of I /o: 17
• 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 ~ 85°C
• Package / Case: 20-SOIC (0.300", 7.50mm Width)
• Controller Family/series: PIC16F
• No. Of I/o's: 18
• Ram Memory Size: 256Byte
• Cpu Speed: 16MHz
• No. Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC16F/LF720/721
REGISTER 17-1:
DS41430A-page 146
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6
bit 5
bit 4
bit 3-0
Note 1:
WCOL
R/W-0
When enabled, these pins must be properly configured as input or output.
WCOL: Write Collision Detect bit
1 = The SSPBUF register is written while it is still transmitting the previous word (must be cleared in
0 = No collision
SSPOV: Receive Overflow Indicator bit
1 = A new byte is received while the SSPBUF register is still holding the previous data. In case of
0 = No overflow
SSPEN: Synchronous Serial Port Enable bit
1 = Enables serial port and configures SCK, SDO and SDI as serial port pins
0 = Disables serial port and configures these pins as I/O port pins
CKP: Clock Polarity Select bit
1 = Idle state for clock is a high level
0 = Idle state for clock is a low level
SSPM<3:0>: Synchronous Serial Port mode Select bits
0000 = SPI Master mode, clock = F
0001 = SPI Master mode, clock = F
0010 = SPI Master mode, clock = F
0011 = SPI Master mode, clock = TMR2 output/2
0100 = SPI Slave mode, clock = SCK pin. SS pin control enabled.
0101 = SPI Slave mode, clock = SCK pin. SS pin control disabled. SS can be used as I/O pin.
SSPOV
R/W-0
software)
overflow, the data in SSPSR is lost. Overflow can only occur in Slave mode. The user must read
the SSPBUF, even if only transmitting data, to avoid setting overflow. In Master mode the overflow
bit is not set since each new reception (and transmission) is initiated by writing to the SSPBUF
register.
SSPCON: SYNC SERIAL PORT CONTROL REGISTER (SPI MODE)
W = Writable bit
‘1’ = Bit is set
SSPEN
R/W-0
R/W-0
CKP
OSC
OSC
OSC
/4
/16
/64
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
SSPM3
R/W-0
SSPM2
R/W-0
 2010 Microchip Technology Inc.
x = Bit is unknown
SSPM1
R/W-0
(1)
SSPM0
R/W-0
bit 0