PIC16F1826-I/SS Microchip Technology Inc., PIC16F1826-I/SS Datasheet - Page 19
PIC16F1826-I/SS
Manufacturer Part Number
PIC16F1826-I/SS
Description
20 SSOP .209in TUBE, 3.5 KB Flash, 256 bytes RAM, 32 MHz Int. Osc, 16 I/0, Enhan
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F1826-ISO.pdf
(406 pages)
Specifications of PIC16F1826-I/SS
A/d Inputs
12-Channel, 10-Bit
Comparators
2
Cpu Speed
8 MIPS
Eeprom Memory
256 Bytes
Input Output
15
Interface
I2C/SPI/UART
Memory Type
Flash
Number Of Bits
8
Package Type
18-pin SSOP
Programmable Memory
3.5K Bytes
Ram Size
256 Bytes
Speed
32 MHz
Timers
2-8-bit, 1-16-bit
Voltage, Range
1.8-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PIC16F1826-I/SS
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
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3.1.1
There are two methods of accessing constants in pro-
gram memory. The first method is to use tables of
RETLW instructions. The second method is to set an
FSR to point to the program memory.
3.1.1.1
The RETLW instruction can be used to provide access
to tables of constants. The recommended way to create
such a table is shown in
EXAMPLE 3-1:
The BRW instruction makes this type of table very sim-
ple to implement. If your code must remain portable
with previous generations of microcontrollers, then the
BRW instruction is not available so the older table read
method must be used.
2011 Microchip Technology Inc.
constants
my_function
BRW
RETLW DATA0
RETLW DATA1
RETLW DATA2
RETLW DATA3
;… LOTS OF CODE…
MOVLW
call constants
;… THE CONSTANT IS IN W
READING PROGRAM MEMORY AS
DATA
RETLW Instruction
DATA_INDEX
RETLW INSTRUCTION
Example
;Add Index in W to
;program counter to
;select data
;Index0 data
;Index1 data
3-1.
PIC16(L)F1826/27
DS41391D-page 19
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