PIC16F1937-E/ML Microchip Technology, PIC16F1937-E/ML Datasheet - Page 25
![IC PIC MCU FLASH 512KX14 44-QFN](/photos/6/81/68122/150-44-qfn_sml.jpg)
PIC16F1937-E/ML
Manufacturer Part Number
PIC16F1937-E/ML
Description
IC PIC MCU FLASH 512KX14 44-QFN
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Datasheets
1.PIC16F722-ISS.pdf
(8 pages)
2.PIC16LF1933-ISS.pdf
(508 pages)
3.PIC16LF1933-ISS.pdf
(46 pages)
4.PIC16F1936-ISS.pdf
(2 pages)
5.PIC16F1936-ISS.pdf
(10 pages)
6.PIC16F1936-ISS.pdf
(40 pages)
7.PIC16F1936-ISS.pdf
(30 pages)
8.PIC16F1936-ISS.pdf
(12 pages)
9.PIC16LF1934-IML.pdf
(418 pages)
Specifications of PIC16F1937-E/ML
Program Memory Type
FLASH
Program Memory Size
14KB (8K x 14)
Package / Case
44-QFN
Core Processor
PIC
Core Size
8-Bit
Speed
32MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
36
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 14x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Processor Series
PIC16F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
EUSART/MI2C/SPI
Maximum Clock Frequency
32 MHz
Number Of Programmable I/os
36
Number Of Timers
5
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005
Minimum Operating Temperature
- 40 C
On-chip Adc
14-ch x 10-bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
- PIC16F722-ISS PDF datasheet
- PIC16LF1933-ISS PDF datasheet #2
- PIC16LF1933-ISS PDF datasheet #3
- PIC16F1936-ISS PDF datasheet #4
- PIC16F1936-ISS PDF datasheet #5
- PIC16F1936-ISS PDF datasheet #6
- PIC16F1936-ISS PDF datasheet #7
- PIC16F1936-ISS PDF datasheet #8
- PIC16LF1934-IML PDF datasheet #9
- Current page: 25 of 418
- Download datasheet (7Mb)
FIGURE 2-3:
© 2008 Microchip Technology Inc.
Program
Memory
On-chip
INTERRUPT, RETFIE
RETURN, RETLW
CALL, CALLW
Rollover to Page 0
Rollover to Page 7
Interrupt Vector
Stack Level 15
Stack Level 0
Stack Level 1
Reset Vector
PROGRAM MEMORY MAP
AND STACK FOR THE
PIC16F1938/PIC16LF1938/
PIC16F1939/PIC16LF1939
PC<14:0>
Page 1
Page 2
Page 3
Page 4
Page 7
Page 0
15
0000h
0004h
0005h
7FFFh
07FFh
0800h
0FFFh
1000h
17FFh
1800h
1FFFh
2000h
3FFFh
4000h
Preliminary
2.1.1
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.
2.1.1.1
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 2-1.
EXAMPLE 2-1:
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.
2.1.1.2
The program memory can be accessed as data by set-
ting bit 7 of the FSRxH register and reading the match-
ing INDFx register. The MOVIW instruction will place the
lower 8 bits of the addressed word in the W register.
Writes to the program memory cannot be performed via
the INDF registers. Instructions that access the pro-
gram memory via the FSR require one extra instruction
cycle to complete. Example 2-2 demonstrates access-
ing the program memory via an FSR.
EXAMPLE 2-2:
constants
my_function
bsf FSR1H,7
moviw 0[INDF1]
;THE PROGRAM MEMORY IS IN W
PIC16F193X/LF193X
brw
retlw DATA1
retlw DATA2
retlw DATA3
retlw DATA4
;… LOTS OF CODE…
movlw
call constants
;… THE CONSTANT IS IN W
READING PROGRAM MEMORY AS
DATA
RETLW Instruction
Indirect Read with FSR
DATA_INDEX
RETLW INSTRUCTION
ACCESSING PROGRAM
MEMORY VIA FSR
DS41364A-page 23
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