PIC16F1847-I/SO Microchip Technology, PIC16F1847-I/SO Datasheet - Page 328

• Manufacturer Part Number: PIC16F1847-I/SO
• Description: 14 KB Flash, 1K Bytes RAM, 32 MHz Int. Osc, 16 I/0, Enhanced Mid Range Core 18 S
• Manufacturer: Microchip Technology

Specifications of PIC16F1847-I/SO

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC16(L)F1847
28.2
The Low-Voltage Programming Entry mode allows the
PIC devices to be programmed using V
high voltage. When the LVP bit of 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 Programming Entry mode
requires the following steps:
1.
2.
Once the key sequence is complete, MCLR must be
held at V
maintained.
If low-voltage programming is enabled (LVP = 1), the
MCLR Reset function is automatically enabled and
cannot be disabled. See
information.
The LVP bit can only be reprogrammed to ‘0’ by using
the High-Voltage Programming mode.
28.3
Connection to a target device is typically done through
an ICSP™ header. A commonly found connector on
development tools is the RJ-11 in the 6P6C (6 pin, 6
connector) configuration. See
FIGURE 28-3:
DS41453A-page 330
MCLR is brought to V
A 32-bit key sequence is presented on
ICSPDAT, while clocking ICSPCLK.
IL
Low-Voltage Programming Entry
Mode
Common Programming Interfaces
for as long as Program/Verify mode is to be
*
PICkit™ STYLE CONNECTOR INTERFACE
Section 7.3 “MCLR”
The 6-pin header (0.100" spacing) accepts 0.025" square pins.
IL
.
Figure
28-2.
DD
only, without
for more
Preliminary
Pin 1 Indicator
1
2
3
4
5
6
FIGURE 28-2:
Another connector often found in use with the PICkit™
programmers is a standard 6-pin header with 0.1 inch
spacing. Refer to
V
PP
V
DD
/MCLR
Pin Description*
1 = V
2 = V
3 = V
4 = ICSPDAT
5 = ICSPCLK
6 = No Connect
Pin Description*
1 = V
2 = V
3 = V
4 = ICSPDAT
5 = ICSPCLK
6 = No Connect
PP
DD
SS
/MCLR
1
Target
(ground)
PP
DD
SS
Figure
2
3
/MCLR
4
(ground)
Target
5
V
6
SS
ICSPDAT
ICD RJ-11 STYLE
CONNECTOR INTERFACE
 2011 Microchip Technology Inc.
28-3.
ICSPCLK
NC
Target
PC Board
Bottom Side