PIC16LF1906-E/SS Microchip Technology, PIC16LF1906-E/SS Datasheet - Page 194
![no-image](/images/manufacturer_photos/0/4/439/microchip_technology_sml.jpg)
PIC16LF1906-E/SS
Manufacturer Part Number
PIC16LF1906-E/SS
Description
14KB Flash, 512B RAM, LCD, 11x10b ADC, EUSART, NanoWatt XLP 28 SSOP .209in TUBE
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Datasheet
1.PIC16LF1904-EMV.pdf
(288 pages)
Specifications of PIC16LF1906-E/SS
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
LIN, UART/USART
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
25
Program Memory Size
14KB (8K x 14)
Program Memory Type
FLASH
Eeprom Size
-
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
28-SSOP (0.209", 5.30mm Width)
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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PIC16LF1904/6/7
19.4
The internal reference ladder can be used to divide the
LCD bias voltage two or three equally spaced voltages
that will be supplied to the LCD segment pins. To create
this, the reference ladder consists of three matched
resistors. Refer to
19.4.1
When in 1/2 Bias mode (BIASMD = 1), then the middle
resistor of the ladder is shorted out so that only two
voltages are generated. The current consumption of the
ladder is higher in this mode, with the one resistor
removed.
TABLE 19-3:
DS41569A-page 194
Low
Medium
High
Power
Mode
LCD Bias Internal Reference
Ladder
BIAS MODE INTERACTION
Nominal Resistance of
LCD INTERNAL LADDER
POWER MODES (1/3 BIAS)
Figure
Entire Ladder
300 kohm
30 kohm
3 Mohm
19-3.
Nominal
100 µA
10 µA
1 µA
I
DD
Preliminary
19.4.2
The internal reference ladder may be operated in one of
three power modes. This allows the user to trade off LCD
contrast for power in the specific application. The larger
the LCD glass, the more capacitance is present on a
physical LCD segment, requiring more current to
maintain the same contrast level.
Three different power modes are available, LP, MP and
HP. The internal reference ladder can also be turned off
for applications that wish to provide an external ladder
or to minimize power consumption. Disabling the
internal reference ladder results in all of the ladders
being disconnected, allowing external voltages to be
supplied.
Whenever the LCD module is inactive (LCDA = 0), the
internal reference ladder will be turned off.
POWER MODES
2011 Microchip Technology Inc.
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