PIC16LF1903T-I/SO Microchip Technology, PIC16LF1903T-I/SO Datasheet - Page 145

• 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

18.0
The Liquid Crystal Display (LCD) Driver module
generates the timing control to drive a static or
multiplexed LCD panel. In the PIC16LF1902/3 device,
the module drives the panels of up to four commons
and up to 72 total segments. The LCD module also
provides control of the LCD pixel data.
The LCD Driver module supports:
• Direct driving of LCD panel
• Three LCD clock sources with selectable prescaler
• Up to four common pins:
• 19 Segment pins
• Static, 1/2 or 1/3 LCD Bias
FIGURE 18-1:
 2011 Microchip Technology Inc.
- Static (1 common)
- 1/2 multiplex (2 commons)
- 1/3 multiplex (3 commons)
- 1/4 multiplex (4 commons)
Note:
Note 1:
LIQUID CRYSTAL DISPLAY
(LCD) DRIVER MODULE
COM3 and SEG15 share the same
physical pin on the PIC16LF1902/3,
therefore SEG15 is not available when
using 1/4 multiplex displays.
2:
These are not directly connected to the I/O pads, but may be tri-stated, depending on the configuration of
the LCD module.
COM3 and SEG15 share the same physical pin, therefore SEG15 is not available when using 1/4 multi-
plex displays.
Data Bus
LCD DRIVER MODULE BLOCK DIAGRAM
F
T1OSC
LFINTOSC
OSC
/256
Timing Control
Clock Source
LCDDATAx
Select and
Registers
Prescaler
LCDCON
LCDSEn
LCDPS
Preliminary
COM<3:0>
MUX
18.1
The module contains the following registers:
• LCD Control register (LCDCON)
• LCD Phase register (LCDPS)
• LCD Reference Ladder register (LCDRL)
• LCD Contrast Control register (LCDCST)
• LCD Reference Voltage Control register
• Up to 3 LCD Segment Enable registers (LCDSEn)
• Up to 12 LCD data registers (LCDDATAn)
(3)
(LCDREF)
SEG<26:24, 15:0>
LCD Registers
To I/O Pads
PIC16LF1902/3
(1)
To I/O Pads
(2)
(1)
DS41455B-page 145