PIC16LF1902-E/SS Microchip Technology, PIC16LF1902-E/SS Datasheet - Page 87
![3.5KB Flash, 128B RAM, LCD, 11x10b ADC, NanoWatt XLP 28 SSOP .209in TUBE](/photos/16/9/160971/ssop-28_sml.jpg)
PIC16LF1902-E/SS
Manufacturer Part Number
PIC16LF1902-E/SS
Description
3.5KB Flash, 128B RAM, LCD, 11x10b ADC, NanoWatt XLP 28 SSOP .209in TUBE
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Datasheet
1.PIC16LF1902-EMV.pdf
(240 pages)
Specifications of PIC16LF1902-E/SS
Processor Series
PIC16LF190x
Core
PIC
Data Bus Width
8 bit
Program Memory Type
Flash
Program Memory Size
2 KB
Data Ram Size
128 B
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
25
Number Of Timers
2
Operating Supply Voltage
1.8 V to 3.6 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Package / Case
SSOP-28
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
-
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
25
Eeprom Size
-
Ram Size
128 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
Lead Free Status / Rohs Status
Details
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- Download datasheet (3Mb)
FIGURE 10-6:
2011 Microchip Technology Inc.
The number of words cannot
to be written into Program or
exceed the number of words
Determine number of words
Program or Config. Memory
Load Write Latches Only
Configuration Memory.
Select Write Operation
(PMADRH:PMADRL)
Select Row Address
Disable Interrupts
Write Operation
(LWLO = 1)
(FREE = 0)
(word_cnt)
(GIE = 0)
per row.
(CFGS)
Select
Start
FLASH PROGRAM MEMORY WRITE FLOWCHART
Preliminary
Program Memory Latches
Update the word counter
No delay when writing to
(PMADRH:PMADRL++)
Operation (WREN = 1)
Load the value to write
(PMDATH:PMDATL)
Enable Write/Erase
Increment Address
Unlock Sequence
Last word to
Figure 10-3
(word_cnt--)
(Figure x-x)
write ?
No
Yes
PIC16LF1902/3
Write Latches to Flash
CPU stalls while Write
Write/Erase Operation
Re-enable Interrupts
operation completes
Unlock Sequence
Erase Operation
(2 ms typical)
Figure 10-3
(WREN = 0)
(LWLO = 0)
(Figure x-x)
(GIE = 1)
Disable
End
DS41455B-page 87
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