PIC16LF1827-E/ML Microchip Technology, PIC16LF1827-E/ML Datasheet - Page 21
PIC16LF1827-E/ML
Manufacturer Part Number
PIC16LF1827-E/ML
Description
18 Pin, 7 KB Flash, 384 Bytes RAM, 32 MHz Int. Osc, 16 I/0, Enhanced Mid Range C
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Specifications of PIC16LF1827-E/ML
Core Processor
PIC
Core Size
8-Bit
Speed
32MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Program Memory Size
7KB (4K x 14)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
384 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Processor Series
PIC16LF
Core
PIC
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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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.
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.
2010 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
;Add Index in W to
;program counter to
;select data
;Index0 data
;Index1 data
Preliminary
PIC16F/LF1826/27
DS41391C-page 21
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