PIC16LF1938-I/MV Microchip Technology, PIC16LF1938-I/MV Datasheet - Page 320
PIC16LF1938-I/MV
Manufacturer Part Number
PIC16LF1938-I/MV
Description
IC MCU 8BIT 28KB FLASH 28UQFN
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Datasheet
1.PIC16LF1938-IMV.pdf
(452 pages)
Specifications of PIC16LF1938-I/MV
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
25
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 ~ 3.6 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-UFQFN Exposed Pad
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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PIC16(L)F1938/9
26.4
The capacitive sensing oscillator can operate in one of
seven different power modes. The power modes are
separated into two ranges; the low range and the high
range.
When the oscillator’s low range is selected, the fixed
internal voltage references of the capacitive sensing
oscillator are being used. When the oscillator’s high
range is selected, the variable voltage references
supplied by the FVR and DAC modules are being used.
Selection between the voltage references is controlled
by the CPSRM bit of the CPSCON0 register. See
Section 26.3
information.
Within each range there are three distinct Power modes;
Low, Medium and High. Current consumption is
dependent upon the range and mode selected. Selecting
Power modes within each range is accomplished by
configuring the CPSRNG <1:0> bits in the CPSCON0
register. See
TABLE 26-1:
DS41574A-page 320
Note 1:
CPSRM
Power Modes
0
1
See the applicable Electrical Specifications Chapter for more information.
Table 26-1
“Voltage
POWER MODE SELECTION
for proper Power mode selection.
References”
Range
High
Low
for
more
Preliminary
CPSRNG<1:0>
00
01
10
11
00
01
10
11
The remaining mode is a Noise Detection mode that
resides within the high range. The Noise Detection
mode is unique in that it disables the sinking and sourc-
ing of current on the analog pin but leaves the rest of
the oscillator circuitry active. This reduces the oscilla-
tion frequency on the analog pin to zero and also
greatly reduces the current consumed by the oscillator
module.
When noise is introduced onto the pin, the oscillator is
driven at the frequency determined by the noise. This
produces a detectable signal at the comparator output,
indicating the presence of activity on the pin.
Figure 26-2
current sources and comparators associated with the
oscillator.
Noise Detection
shows a more detailed drawing of the
Medium
Medium
Mode
High
High
Low
Low
Off
2011 Microchip Technology Inc.
Nominal Current
100 A
0.1 A
1.2 A
0.0 A
0.0 A
18 A
30 A
9 A
(1)
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