PIC16F721-I/ML Microchip Technology, PIC16F721-I/ML Datasheet - Page 15

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

Specifications of PIC16F721-I/ML

• 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-VFQFN Exposed Pad
• 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

PIC16(L)F720/721
5.0
PROGRAMMING ALGORITHMS
The PIC16F/LF720 and PIC16F/LF721 devices have
the capability of storing 32 14-bit words in its data
latches. The data latches are internal to the PIC16F/
LF720 and PIC16F/LF721 devices and are only used
for programming. The data latches allow the user to
program up to 32 program words with a single Begin
Externally Timed Programming or Begin Internally
Timed Programming command. The Load Program
Data or the Load Configuration command is used to
load a single data latch. The data latch will hold the
data until the Begin Externally Timed Programming or
Begin Internally Timed Programming command is
given.
The data latches are aligned with the 5 LSb of the
address. The address at the time the Begin Externally
Timed Programming or Begin Internally Timed Pro-
gramming command is given will determine which loca-
tion(s) in memory are written. Writes cannot cross a
physical 32-word boundary. For example, attempting to
write from address 0002h-0021h will result in data
being written to 0020h-003Fh.
If more than 32 data latches are written without a Begin
Externally Timed Programming or Begin Internally
Timed Programming command, the data in the data
latches will be overwritten. The following figures show
the recommended flowcharts for programming.
Advance Information
 2011 Microchip Technology Inc.
DS41409B-page 15