PIC16LF1939-I/P Microchip Technology, PIC16LF1939-I/P Datasheet - Page 37
![IC MCU 8BIT FLASH 40-DIP](/photos/19/0/190060/4243276_sml.jpg)
PIC16LF1939-I/P
Manufacturer Part Number
PIC16LF1939-I/P
Description
IC MCU 8BIT FLASH 40-DIP
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Specifications of PIC16LF1939-I/P
Core Size
8-Bit
Program Memory Size
28KB (16K x 14)
Core Processor
PIC
Speed
32MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
36
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 14x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
40-DIP (0.600", 15.24mm)
Controller Family/series
PIC16LF
Eeprom Memory Size
256Byte
Ram Memory Size
1024Byte
Cpu Speed
32MHz
No. Of Timers
5
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16LF1939-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
Company:
Part Number:
PIC16LF1939-I/PT
Manufacturer:
Microchip
Quantity:
2 485
Company:
Part Number:
PIC16LF1939-I/PT
Manufacturer:
Microchip
Quantity:
2 485
EXAMPLE 7-2:
7.4.2
With the program code protection enabled the check-
sum is computed in the following manner. The Least
Significant nibble of each user ID is used to create a
16-bit value. The masked value of user ID location
8000h is the Most Significant nibble. This sum of user
IDs is summed with the Configuration Words (all unim-
plemented Configuration bits are masked to ‘0’).
EXAMPLE 7-3:
2010 Microchip Technology Inc.
PIC16LF1936 Sum of Memory addresses 0000h-1FFFh
PIC16F1936
Note:
Note 1: In PIC16F194X devices, the VCAPEN<1> bit is not implemented in Configuration Word 2 and the
Note 1: In PIC16F194X devices, the VCAPEN<1> bit is not implemented in Configuration Word 2 and the
PIC16F193X/LF193X/PIC16F194X/LF194X/
PROGRAM CODE PROTECTION
ENABLED
Data
checksum.
Configuration Word 2 mask is 3713h.
Configuration Word 2 mask is 3713h.
Configuration Word 2 mask
Checksum = 6156h + (3FFFh and 3FFFh) + (3FFFh and 3703h)
Configuration Word 1
Configuration Word 1 mask
Configuration Word 2
memory
CHECKSUM COMPUTED WITH PROGRAM CODE PROTECTION DISABLED
PIC16LF1936, 00AAh AT FIRST AND LAST ADDRESS
CHECKSUM COMPUTED WITH PROGRAM CODE PROTECTION ENABLED
PIC16F1936, BLANK DEVICE
does
Configuration Word 1
Configuration Word 1 mask
Configuration Word 2
Configuration Word 2 mask
User ID (8000h)
User ID (8001h)
User ID (8002h)
User ID (8003h)
Sum of User IDs = (0005h and 000Fh) << 12 + (0007h and 000Fh) << 8 +
Checksum
not
= 6156h + 3FFFh + 3703h
= D858h
effect
(1)
the
= 5000h + 0700h + 0030h + 0002h
= 5732h
= (3F7Fh and 3FFFh) + (3FFFh and 3733h) + Sum of User IDs
= 3F7Fh + 3773h + 5732h
= CDE4h
(0003h and 000Fh) << 4 + (0002h and 000Fh)
(1)
6156h
3FFFh
3FFFh
3FFFh
3703h
3F7Fh
3FFFh
3FFFh
3733h
0005h
0007h
0003h
0002h
DS41397B-page 37