PIC16F873-04E/SO Microchip Technology, PIC16F873-04E/SO Datasheet - Page 515
PIC16F873-04E/SO
Manufacturer Part Number
PIC16F873-04E/SO
Description
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,SOP,28PIN,PLASTIC
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F688T-ISL.pdf
(688 pages)
3.PIC16F873-04SO.pdf
(218 pages)
4.PIC16F873-04SO.pdf
(5 pages)
5.PIC16F873-04SO.pdf
(5 pages)
6.PIC16F873-04SO.pdf
(4 pages)
Specifications of PIC16F873-04E/SO
Rohs Compliant
YES
Core Processor
PIC
Core Size
8-Bit
Speed
4MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
22
Program Memory Size
7KB (4K x 14)
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
192 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 5x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
28-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
PIC16F87304E/SO
- PIC16F616T-ISL PDF datasheet
- PIC16F688T-ISL PDF datasheet #2
- PIC16F873-04SO PDF datasheet #3
- PIC16F873-04SO PDF datasheet #4
- PIC16F873-04SO PDF datasheet #5
- PIC16F873-04SO PDF datasheet #6
- Current page: 515 of 688
- Download datasheet (3Mb)
Section 28. ICSP
28.6
Other Benefits
ICSP provides other benefits, such as calibration and serialization. If program memory permits,
it would be cheaper and more reliable to store calibration constants in program memory instead
of using an external serial EEPROM. For example, if your system has a thermistor which can vary
from one system to another, storing some calibration information in a table format allows the
microcontroller to compensate (in software) for external component tolerances. System cost can
be reduced without affecting the required performance of the system by using software calibra-
tion techniques. But how does this relate to ICSP? The PICmicro has already been programmed
with firmware that performs a calibration cycle. The calibration data is transferred to a calibration
fixture. When all calibration data has been transferred, the fixture places the PICmicro in pro-
gramming mode and programs the PICmicro with the calibration data. Application note AN656,
In-Circuit Serial Programming of Calibration Parameters Using a PICmicro Microcontroller ,
shows exactly how to implement this type of calibration data programming.
The other benefit of ICSP is serialization. Each individual system can be programmed with a
unique or random serial number. One such application of a unique serial number would be for
security systems. A typical system might use DIP switches to set the serial number. Instead, this
number can be burned into program memory, thus reducing the overall system cost and lowering
the risk of tampering.
28
1997 Microchip Technology Inc.
DS31028A-page 28-7
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