PIC16F1947-E/MR Microchip Technology, PIC16F1947-E/MR Datasheet - Page 344
![28KB Flash, 1KB RAM, 256B EEPROM, LCD, 1.8-5.5V 64 QFN 9x9x0.9mm TUBE](/photos/16/3/160368/qfn64_sml.jpg)
PIC16F1947-E/MR
Manufacturer Part Number
PIC16F1947-E/MR
Description
28KB Flash, 1KB RAM, 256B EEPROM, LCD, 1.8-5.5V 64 QFN 9x9x0.9mm TUBE
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Datasheets
1.PIC16F722-ISS.pdf
(8 pages)
2.PIC16LF1933-ISS.pdf
(46 pages)
3.PIC16LF1946-IPT.pdf
(448 pages)
4.PIC16LF1946-IPT.pdf
(6 pages)
5.PIC16F1946-IPT.pdf
(8 pages)
Specifications of PIC16F1947-E/MR
Core Processor
PIC
Core Size
8-Bit
Speed
32MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
54
Program Memory Size
28KB (16K x 14)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 17x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
64-VQFN Exposed Pad, 64-HVQFN, 64-SQFN, 64-DHVQFN
Processor Series
PIC16F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
1 KB
Interface Type
MI2C, SPI, EUSART
Maximum Clock Frequency
32 MHz
Number Of Programmable I/os
54
Number Of Timers
5
Operating Supply Voltage
1.8 V to 5.5 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 17 Channel
On-chip Dac
5 bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- PIC16F722-ISS PDF datasheet
- PIC16LF1933-ISS PDF datasheet #2
- PIC16LF1946-IPT PDF datasheet #3
- PIC16LF1946-IPT PDF datasheet #4
- PIC16F1946-IPT PDF datasheet #5
- Current page: 344 of 448
- Download datasheet (4Mb)
PIC16F/LF1946/47
27.4
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
27.4.1
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 27-3:
DS41414B-page 344
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
27-3.
Nominal
100 µA
10 µA
1 µA
I
DD
Preliminary
27.4.2
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
2010 Microchip Technology Inc.
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