PIC16LF1903T-I/SO Microchip Technology, PIC16LF1903T-I/SO Datasheet - Page 180

• Manufacturer Part Number: PIC16LF1903T-I/SO
• Description: 7KB Flash, 256B RAM, LCD, 11x10b ADC, NanoWatt XLP 28 SOIC .300in T/R
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 16Fr

Specifications of PIC16LF1903T-I/SO

• Processor Series: PIC16LF190x
• Core: PIC
• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 4 KB
• Data Ram Size: 256 B
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 25
• Number Of Timers: 2
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-28
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: -
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 25
• Eeprom Size: -
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Lead Free Status / Rohs Status: Details

PIC16LF1902/3
19.2
The Low-Voltage Programming Entry mode allows the
PIC16LF1902/3 devices to be programmed using V
only, without 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
Low-Power Brown-out Reset (ULPBOR)”
information.
The LVP bit can only be reprogrammed to ‘0’ by using
the High-Voltage Programming mode.
19.3
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 19-3:
DS41455B-page 180
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
be
for as long as Program/Verify mode is to be
disabled.
*
PICkit™ STYLE CONNECTOR INTERFACE
The 6-pin header (0.100" spacing) accepts 0.025" square pins.
IL
See
.
Figure
Section 5.3
19-2.
for more
“Ultra
Preliminary
DD
Pin 1 Indicator
1
2
3
4
5
6
FIGURE 19-2:
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.
19-3.
ICSPCLK
NC
Target
PC Board
Bottom Side