PIC16LF627A-I/ML Microchip Technology, PIC16LF627A-I/ML Datasheet - Page 114
![IC MCU FLASH 1KX14 EEPROM 28QFN](/photos/6/81/68120/150-28-qfn_sml.jpg)
PIC16LF627A-I/ML
Manufacturer Part Number
PIC16LF627A-I/ML
Description
IC MCU FLASH 1KX14 EEPROM 28QFN
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Specifications of PIC16LF627A-I/ML
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Program Memory Size
1.75KB (1K x 14)
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
224 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
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supplied to or from the device, depending if the command
PIC16F627A/628A/648A
14.11 In-Circuit Serial Programming™
The PIC16F627A/628A/648A microcontrollers can be
serially programmed while in the end application circuit.
This is simply done with two lines for clock and data,
and three other lines for power, ground and the
programming voltage. This allows customers to
manufacture boards with unprogrammed devices and
then program the microcontroller just before shipping
the product. This also allows the most recent firmware
or custom firmware to be programmed.
The device is placed into a Program/Verify mode by
holding the RB6 and RB7 pins low while raising the
MCLR (V
628A/648A
Specification” (DS41196) for details. RB6 becomes the
programming clock and RB7 becomes the programming
data. Both RB6 and RB7 are Schmitt Trigger inputs in
this mode.
After Reset, to place the device into Programming/Verify
mode, the Program Counter (PC) is at location 00h. A
6-bit command is then supplied to the device. Depending
on the command, 14 bits of program data are then
was a load or a read. For complete details of serial
programming, please refer to “PIC16F627A/628A/648A
EEPROM
(DS41196).
A typical In-Circuit Serial Programming connection is
shown in Figure 14-18.
FIGURE 14-18:
DS40044G-page 114
External
Connector
Signals
Data I/O
CLK
+5V
V
(ICSP™)
0V
PP
PP
) pin from V
Memory
EEPROM
To Normal
Connections
To Normal
Connections
TYPICAL IN-CIRCUIT
SERIAL PROGRAMMING
CONNECTION
IL
Programming
to V
Memory
IHH
PIC16F627A/628A/648A
V
V
RA5/MCLR/V
RB6/PGC
RB7/PGD
. See “PIC16F627A/
V
DD
SS
DD
Programming
Specification”
PP
14.12 Low-Voltage Programming
The LVP bit of the Configuration Word, enables the low-
voltage
microcontroller to be programmed via ICSP using only
a 5V source. This mode removes the requirement of
V
normally erased to ‘1’ which enables the low-voltage
programming. In this mode, the RB4/PGM pin is
dedicated to the programming function and ceases to
be a general purpose I/O pin. The device will enter
Programming mode when a ‘1’ is placed on the RB4/
PGM pin. The High-Voltage Programming mode is still
available by placing V
If Low-Voltage Programming mode is not used, the
LVP bit should be programmed to a ‘0’ so that RB4/
PGM becomes a digital I/O pin. To program the device,
V
The LVP bit may only be programmed when program-
ming is entered with V
cannot be programmed when programming is entered
with RB4/PGM.
It should be noted, that once the LVP bit is programmed
to ‘0’, only High-Voltage Programming mode can be
used to program the device.
IHH
IHH
Note 1: While in this mode, the RB4 pin can no
must be placed onto MCLR during programming.
to be placed on the MCLR pin. The LVP bit is
2: V
programming.
longer be used as a general purpose I/O
pin.
operations.
DD
must be 5.0V +10% during erase
IHH
© 2009 Microchip Technology Inc.
IHH
on the MCLR pin.
This
on MCLR. The LVP bit
mode
allows
the
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