PIC16LF1828-E/ML Microchip Technology, PIC16LF1828-E/ML Datasheet - Page 147
![no-image](/images/manufacturer_photos/0/4/439/microchip_technology_sml.jpg)
PIC16LF1828-E/ML
Manufacturer Part Number
PIC16LF1828-E/ML
Description
7 KB Flash, 256 Bytes RAM, 32 MHz Int. Osc, 18 I/0, Enhanced Mid Range Core, Nan
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Datasheet
1.PIC16F1824-ISL.pdf
(419 pages)
Specifications of PIC16LF1828-E/ML
Core Processor
PIC
Core Size
8-Bit
Speed
32MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
17
Program Memory Size
7KB (4K x 14)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
20-VFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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15.0
This family of devices is equipped with a temperature
circuit designed to measure the operating temperature
of the silicon die. The circuit’s range of operating
temperature falls between of -40°C and +85°C. The
output is a voltage that is proportional to the device
temperature. The output of the temperature indicator is
internally connected to the device ADC.
The circuit may be used as a temperature threshold
detector or a more accurate temperature indicator,
depending on the level of calibration performed. A one-
point calibration allows the circuit to indicate a
temperature closely surrounding that point. A two-point
calibration allows the circuit to sense the entire range
of temperature more accurately. Reference Application
Note AN1333, “Use and Calibration of the Internal
Temperature Indicator” (DS01333) for more details
regarding the calibration process.
15.1
Figure 15-1
temperature circuit. The proportional voltage output is
achieved by measuring the forward voltage drop across
multiple silicon junctions.
Equation 15-1
the temperature indicator.
EQUATION 15-1:
The temperature sense circuit is integrated with the
Fixed
Section 14.0 “Fixed Voltage Reference (FVR)”
more information.
The circuit is enabled by setting the TSEN bit of the
FVRCON register
circuit draws no current.
The circuit operates in either high or low range. The high
range, selected by setting the TSRNG bit of the
FVRCON register, provides a wider output voltage. This
provides more resolution over the temperature range,
but may be less consistent from part to part. This range
requires a higher bias voltage to operate and thus, a
higher V
The low range is selected by clearing the TSRNG bit of
the FVRCON register. The low range generates a lower
voltage drop and thus, a lower bias voltage is needed to
operate the circuit. The low range is provided for low
voltage operation.
2010 Microchip Technology Inc.
Voltage
DD
High Range: V
Low Range: V
TEMPERATURE INDICATOR
MODULE
Circuit Operation
is needed.
shows a simplified block diagram of the
describes the output characteristics of
Reference
(Register
OUT
OUT
V
OUT
= V
= V
14-1). When disabled, the
RANGES
DD
DD
(FVR)
- 2V
- 4V
T
T
module.
See
Preliminary
for
FIGURE 15-1:
15.2
When the temperature circuit is operated in low range,
the device may be operated at any operating voltage
that is within specifications.
When the temperature circuit is operated in high range,
the device operating voltage, V
enough to ensure that the temperature circuit is
correctly biased.
Table 15-1
range setting.
TABLE 15-1:
15.3
The output of the circuit is measured using the internal
analog-to-digital converter. A channel is reserved for the
temperature circuit output. Refer to
“Analog-to-Digital Converter (ADC) Module”
detailed information.
15.4
To ensure accurate temperature measurements, the
user must wait at least 200 s after the ADC input
multiplexer is connected to the temperature indicator
output before the conversion is performed. In addition,
the user must wait 200 s between sequential
conversions of the temperature indicator output.
PIC16(L)F1824/1828
Min. V
Minimum Operating V
Minimum Sensing Temperature
DD
Temperature Output
ADC Aquisition Time
shows the recommended minimum V
3.6V
, TSRNG = 1
V
DD
RECOMMENDED V
RANGE
TEMPERATURE CIRCUIT
DIAGRAM
V
OUT
(ADCON0 register)
TSEN
TSRNG
CHS bits
Min. V
ADC
MUX
n
DD
DS41419B-page 147
DD
, must be high
DD
1.8V
, TSRNG = 0
DD
Section 16.0
vs.
ADC
VS.
DD
vs.
for
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