PIC16F721-E/SO Microchip Technology, PIC16F721-E/SO Datasheet - Page 171

• 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

20.0
ICSP™ programming allows customers to manufacture
circuit boards with unprogrammed devices. Programming
can be done after the assembly process, allowing the
device to be programmed with the most recent firmware
or a custom firmware. Five pins are needed for ICSP™
programming:
• ICSPCLK
• ICSPDAT
• MCLR/V
• V
• V
FIGURE 20-1:
 2010 Microchip Technology Inc.
DD
SS
IN-CIRCUIT SERIAL
PROGRAMMING™ (ICSP™)
PP
External
Programming
Signals
TYPICAL CONNECTION FOR ICSP™ PROGRAMMING
Clock
GND
Data
V
V
DD
PP
*
To Normal Connections
*
V
DD
The device is placed into Program/Verify mode by
holding the ICSPCLK and ICSPDAT pins low then
raising the voltage on MCLR/V
Program/Verify mode the program memory, user IDs and
the Configuration Words are programmed through serial
communications. The ICSPDAT pin is a bidirectional I/O
used for transferring the serial data and the ISCPCLK pin
is the clock input. For more information on ICSP™ refer
to
Specification” (DS41332).
Note:
*
the
10k
PIC16F/LF720/721
The MPLAB
age greater than the maximum V
ification of the PIC16F/LF720/721. When
using this programmer, an external circuit,
such as the AC164112 MPLAB ICD 2 V
voltage limiter, is required to keep the V
voltage within the device specifications.
“PIC16F72x/PIC16LF72x
*
Isolation devices (as required).
V
MCLR/V
V
ICSPDAT
ICSPCLK
Device to be
Programmed
DD
SS
®
ICD 2 produces a V
PP
PP
from 0V to V
DS41430A-page 171
Programming
PP
PP
spec-
PP
volt-
. In
PP
PP