PIC16LF1906-E/MV Microchip Technology, PIC16LF1906-E/MV Datasheet - Page 95

• Manufacturer Part Number: PIC16LF1906-E/MV
• Description: 14KB Flash, 512B RAM, LCD, 11x10b ADC, EUSART, NanoWatt XLP 28 UQFN 4x4x0.5mm TU
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 16Fr

Specifications of PIC16LF1906-E/MV

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: LIN, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 25
• Program Memory Size: 14KB (8K x 14)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-UFQFN Exposed Pad
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

10.3
When modifying existing data in a program memory
row, and data within that row must be preserved, it must
first be read and saved in a RAM image. Program
memory is modified using the following steps:
1.
2.
3.
4.
5.
6.
7.
 2011 Microchip Technology Inc.
Load the starting address of the row to be
modified.
Read the existing data from the row into a RAM
image.
Modify the RAM image to contain the new data
to be written into program memory.
Load the starting address of the row to be
rewritten.
Erase the program memory row.
Load the write latches with data from the RAM
image.
Initiate a programming operation.
Modifying Flash Program Memory
Preliminary
FIGURE 10-7:
PIC16LF1904/6/7
An image of the entire row read
The words to be modified are
changed in the RAM image
must be stored in RAM
Modify Operation
Modify Operation
Erase Operation
Read Operation
use RAM image
Write Operation
Modify Image
Figure 10-1
Figure 10-4
Figure 10-5
(Figure x.x)
(Figure x.x)
(Figure x.x)
FLASH PROGRAM
MEMORY MODIFY
FLOWCHART
Start
End
DS41569A-page 95