PIC12F1822-E/MF Microchip Technology, PIC12F1822-E/MF Datasheet - Page 140

• Manufacturer Part Number: PIC12F1822-E/MF
• Description: 3.5 KB Flash, 128 Bytes RAM, 32 MHz Int. Osc, 6 I/0, Enhanced Mid Range Core 8 D
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 12Fr

Specifications of PIC12F1822-E/MF

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 32MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 6
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 8-DFN
• Processor Series: PIC12F
• Core: PIC
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: ICE2000
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC12F/LF1822/PIC16F/LF1823
16.1
When configuring and using the ADC the following
functions must be considered:
• Port configuration
• Channel selection
• ADC voltage reference selection
• ADC conversion clock source
• Interrupt control
• Result formatting
16.1.1
The ADC can be used to convert both analog and
digital signals. When converting analog signals, the I/O
pin should be configured for analog by setting the
associated
Section 12.0 “I/O Ports”
16.1.2
There are up to 11 channel selections available:
• AN<3:0> pins (PIC12F/LF1822 only)
• AN<7:0> pins (PIC16F/LF1823 only)
• Temperature Indicator
• DAC Output
• FVR (Fixed Voltage Reference) Output
Refer to
(DAC)
ence (FVR)”
tor Module”
selections.
The CHS bits of the ADCON0 register determine which
channel is connected to the sample and hold circuit.
When changing channels, a delay is required before
starting the next conversion. Refer to
“ADC Operation”
16.1.3
The ADPREF bits of the ADCON1 register provides
control of the positive voltage reference. The positive
voltage reference can be:
• V
• V
• FVR 2.048V
• FVR 4.096V (Not available on LF devices)
See
for more details on the fixed voltage reference.
DS41413B-page 140
Note:
REF
DD
Section 14.0 “Fixed Voltage Reference (FVR)”
Module”,
+ pin
ADC Configuration
Section 17.0 “Digital-to-Analog Converter
PORT CONFIGURATION
Analog voltages on any pin that is defined
as a digital input may cause the input buf-
fer to conduct excess current.
CHANNEL SELECTION
ADC VOLTAGE REFERENCE
TRIS
and
for more information on these channel
Section 14.0 “Fixed Voltage Refer-
Section 15.0 “Temperature Indica-
for more information.
and
for more information.
ANSEL
bits.
Section 16.2
Refer
Preliminary
to
16.1.4
The source of the conversion clock is software select-
able via the ADCS bits of the ADCON1 register. There
are seven possible clock options:
• F
• F
• F
• F
• F
• F
• F
The time to complete one bit conversion is defined as
T
ods as shown in
For correct conversion, the appropriate T
tion must be met. Refer to the A/D conversion require-
ments in
more information.
priate ADC clock selections.
AD
Note:
OSC
OSC
OSC
OSC
OSC
OSC
RC
. One full 10-bit conversion requires 11.5 T
(dedicated internal oscillator)
/2
/4
/8
/16
/32
/64
Section 30.0 “Electrical Specifications”
Unless using the F
system clock frequency will change the
ADC
adversely affect the ADC result.
CONVERSION CLOCK
Figure
Table 16-1
clock
16-2.
 2010 Microchip Technology Inc.
frequency,
gives examples of appro-
RC
, any changes in the
which
AD
specifica-
AD
may
peri-
for