PIC16F1826-I/MQ Microchip Technology, PIC16F1826-I/MQ Datasheet - Page 321

• Manufacturer Part Number: PIC16F1826-I/MQ
• Description: IC, 8BIT MCU, PIC16F, 32MHZ, QFN-28
• Manufacturer: Microchip Technology

Specifications of PIC16F1826-I/MQ

• Controller Family/series: PIC16F
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 256Byte
• Cpu Speed: 32MHz
• No. Of Timers: 3
• Interface: EUSART, I2C, SPI
• Core Size: 8 Bit
• Program Memory Size: 2kWords
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

27.0
In-Circuit Serial 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
In 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 ICSPCLK pin is the clock input. For more infor-
mation on ICSP™ refer to the “PIC16F/LF1826/27
Memory Programming Specification” (DS41390)
27.1
The device is placed into high-voltage Program/Verify
mode by holding the ICSPCLK and ICSPDAT pins low
then raising the voltage on MCLR/V
FIGURE 27-1:
© 2009 Microchip Technology Inc.
DD
SS
IN-CIRCUIT SERIAL
PROGRAMMING™ (ICSP™)
High-voltage Programming Mode
PP
External
Programming
Signals
TYPICAL CONNECTION FOR ICSP™ PROGRAMMING
Clock
Data
V
V
V
DD
PP
SS
PP
to V
IHH
*
To Normal Connections
.
Preliminary
*
V
DD
27.2
The Low-Voltage Programming mode allows the
PIC16F/LF1826/27 devices to be programmed using
V
Configuration Word 2 is set to ‘1’, the low-voltage ICSP
programming entry is enabled. To disable the
Low-Voltage ICSP mode, the LVP bit must be
programmed to ‘0’.
Entry into the Low-Voltage ICSP Program/Verify modes
requires the following steps:
1.
2.
Once the key sequence is complete, MCLR must be
held at V
maintained.
DD
Note:
*
MCLR is brought to V
A 32-bit key sequence is presented on
ICSPDAT, while clocking ICSPCLK.
only, without high voltage. When the LVP bit of the
10k
PIC16F/LF1826/27
IL
Low-Voltage Programming Mode
for as long as Program/Verify mode is to be
The ICD 2 produces a V
than the maximum V
PIC16F/LF1826/27. When using this pro-
grammer, an external circuit is required to
keep the V
specifications.
*
Isolation devices (as required).
V
MCLR/V
V
ICSPDAT
ICSPCLK
Device to be
Programmed
DD
SS
PP
IL
voltage within the device
PP
.
PP
specification of the
DS41391B-page 321
PP
voltage greater