PIC16F1507-E/P Microchip Technology, PIC16F1507-E/P Datasheet - Page 119

3.5KB Flash, 128B RAM, 18 I/O, CLC, CWG, DDS, 10-bit ADC 20 PDIP .300in TUBE

PIC16F1507-E/P

Manufacturer Part Number
PIC16F1507-E/P
Description
3.5KB Flash, 128B RAM, 18 I/O, CLC, CWG, DDS, 10-bit ADC 20 PDIP .300in TUBE
Manufacturer
Microchip Technology
Series
PIC® 16Fr

Specifications of PIC16F1507-E/P

Processor Series
PIC16
Core
PIC16F
Data Bus Width
8 bit
Program Memory Type
Flash
Program Memory Size
3.5 KB
Data Ram Size
128 B
Interface Type
ICSP
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
18
Number Of Timers
3
Operating Supply Voltage
2.3 V to 5.5 V
Maximum Operating Temperature
+ 125 C
Mounting Style
Through Hole
Package / Case
PDIP-20
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 125 C
Supply Current (max)
30 uA
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
-
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
17
Eeprom Size
-
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
2.3 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Lead Free Status / Rohs Status
 Details
PIC16(L)F1507
14.0
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 -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.
14.1
Figure 14-1
temperature circuit. The proportional voltage output is
achieved by measuring the forward voltage drop across
multiple silicon junctions.
Equation 14-1
the temperature indicator.
EQUATION 14-1:
The temperature sense circuit is integrated with the
Fixed
Section 13.0 “Fixed Voltage Reference (FVR)” for
more information.
The circuit is enabled by setting the TSEN bit of the
FVRCON register. When disabled, the 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.
DS41586A-page 119
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
V
OUT
OUT
OUT
= V
= V
RANGES
DD
DD
(FVR)
- 2V
- 4V
T
T
module.
See
Preliminary
FIGURE 14-1:
14.2
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 cor-
rectly biased.
Table 14-1
range setting.
TABLE 14-1:
14.3
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 Section 15.0
“Analog-to-Digital Converter (ADC) Module” for
detailed information.
14.4
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.
Min. V
Minimum Operating V
DD
Temperature Output
ADC Acquisition Time
shows the recommended minimum V
3.6V
, TSRNG = 1
V
RECOMMENDED V
RANGE
DD
TEMPERATURE CIRCUIT
DIAGRAM
 2011 Microchip Technology Inc.
V
OUT
TSEN
Min. V
TSRNG
DD
DD
To ADC
, must be high
DD
1.8V
, TSRNG = 0
DD
VS.
DD
vs.

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