PIC16F819-I/SS Microchip Technology, PIC16F819-I/SS Datasheet - Page 449
![IC MCU FLASH 2KX14 20-SSOP](/photos/6/58/65895/150-20-ssop_sml.jpg)
PIC16F819-I/SS
Manufacturer Part Number
PIC16F819-I/SS
Description
IC MCU FLASH 2KX14 20-SSOP
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F688T-ISL.pdf
(688 pages)
3.PIC16F818-ISO.pdf
(176 pages)
4.PIC16F818-ISO.pdf
(6 pages)
5.PIC16F818-ISO.pdf
(8 pages)
6.PIC16F818-ISO.pdf
(8 pages)
Specifications of PIC16F819-I/SS
Core Size
8-Bit
Program Memory Size
3.5KB (2K x 14)
Core Processor
PIC
Speed
20MHz
Connectivity
I²C, SPI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 5x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-SSOP
Controller Family/series
PIC16F
No. Of I/o's
16
Eeprom Memory Size
256Byte
Ram Memory Size
256Byte
Cpu Speed
20MHz
No. Of Timers
3
Processor Series
PIC16F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
I2C, SPI, SSP
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
16
Number Of Timers
1 x 16 bit
Operating Supply Voltage
2 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163014
Minimum Operating Temperature
- 40 C
On-chip Adc
5 bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
XLT20SS-1 - SOCKET TRANSITION 18DIP 20SSOPAC164307 - MODULE SKT FOR PM3 28SSOP
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PIC16F819-I/SS
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
- PIC16F616T-ISL PDF datasheet
- PIC16F688T-ISL PDF datasheet #2
- PIC16F818-ISO PDF datasheet #3
- PIC16F818-ISO PDF datasheet #4
- PIC16F818-ISO PDF datasheet #5
- PIC16F818-ISO PDF datasheet #6
- Current page: 449 of 688
- Download datasheet (3Mb)
1997 Microchip Technology Inc.
Steps for Method 2 (“variable conversion time”):
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. Do Conversion Calculations.
11. Go to Step 2.
The maximum Slope A/D timer count is 65,536. It can be clocked by the on-chip or external oscil-
lator. At a 4 MHz oscillation frequency, the maximum conversion time is 16.38 ms for a full count.
A typical conversion should complete before full-count is reached. The timer overflow flag is set
once the timer rolls over (FFFFh to 0000h), and an interrupt occurs, if enabled.
End-user calibration is simplified or eliminated by making use of the on-chip EPROM. Internal
component values are measured at factory final test and stored in the memory for use by the
application firmware.
Periodic conversion cycles should be performed on the bandgap and slope references
(described in Subsection
nent drift. Measurements for the reference voltage counts are equated to the voltage value stored
into EPROM during calibration. Since all measurements are relative to the reference, offset
voltages inherent in the comparator are minimized. The Slope A/D clock source does not require
a precise frequency, only a stable frequency.
See AN624, “PIC14000 Slope A/D Theory and Implementation” for further details of Slope A/D
operation.
Note:
Initialize the Slope A/D module:
Set the ADRST bit (ADCON0<1>), until the ramp capacitor reaches ground. This is capac-
itor dependent. A minimum of 200 s is recommended.
Select Input Channel.
Clear the OVFIF and ADCIF bits.
Initialize Slope A/D Timer (ADTMR). ADTMR value depends on bits of resolution required
(see
To start a conversion, clear the ADRST bit, this allows the ramp capacitor to begin charg-
ing and the ADTMR to increment.
Conversion is complete when the ramp voltage exceeds the analog input so the compar-
ator output changes from high to low. This causes the ADCIF bit to be set.
Check if the ADTMR did not increment more counts than the maximum resolution allowed.
If there were more counts, then the input voltage was out of the A/D input range.
Set the ADRST bit (ADCON0<1>) to stop ADTMR and discharge external capacitor
a)Clear the REFOFF bit (SLPCON<5>).
b)Clear the ADOFF bit (SLPCON<0>).
c)Initialize ADCON1<7:4> to select the programmable current source.
Table
The Slope A/D timer continues to run following a capture event.
24-1).
24.4 “Other Analog Modules”
Section 24. Slope A/D
) to compensate for Slope A/D compo-
DS31024A-page 24-7
24
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