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PIC16F18344-I/SS Datasheet(PDF) 73 Page - Microchip Technology

Part # PIC16F18344-I/SS
Description  Full-Featured, Low Pin Count Microcontrollers with XLP
PDF  489 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F18344-I/SS Datasheet(HTML) 73 Page - Microchip Technology

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 2015-2017 Microchip Technology Inc.
DS40001800C-page 73
PIC16(L)F18324/18344
6.11
Determining the Cause of a Reset
Upon any Reset, multiple bits in the STATUS and
PCON0 register are updated to indicate the cause of
the Reset. Table 6-3 and Table 6-4 show the Reset
conditions of these registers.
TABLE 6-3:
RESET STATUS BITS AND THEIR SIGNIFICANCE
STKOVF STKUNF RWDT
RMCLR
RI
POR
BOR
TO
PD
Condition
00
1
1
1
0
x
1
1
Power-on Reset
00
1
1
1
0
x
0
x
Illegal, TO is set on POR
00
1
1
1
0
x
x
0
Illegal, PD is set on POR
00
u
1
1
u
0
1
1
Brown-out Reset
uu
0
u
u
u
u
0
u
WDT Reset
uu
u
u
u
u
u
0
0
WDT Wake-up from Sleep
uu
u
u
u
u
u
1
0
Interrupt Wake-up from Sleep
uu
u
0
u
u
u
u
u
MCLR Reset during Normal Operation
uu
u
0
u
u
u
1
0
MCLR Reset during Sleep
u
u
u
u
0
u
u
u
u
RESET
Instruction Executed
1u
u
u
u
u
u
u
u
Stack Overflow Reset (STVREN = 1)
u1
u
u
u
u
u
u
u
Stack Underflow Reset (STVREN = 1)
TABLE 6-4:
RESET CONDITION FOR SPECIAL REGISTERS
Condition
Program
Counter
STATUS
Register
PCON0
Register
Power-on Reset
0000h
---1 1000
00-- 110x
MCLR Reset during Normal Operation
0000h
---u uuuu
uu-- 0uuu
MCLR Reset during Sleep
0000h
---1 0uuu
uu-- 0uuu
WDT Reset
0000h
---0 uuuu
uu-0 uuuu
WDT Wake-up from Sleep
PC + 1
---0 0uuu
uu-u uuuu
Brown-out Reset
0000h
---1 1000
00-1 11u0
Interrupt Wake-up from Sleep
PC + 1(1)
---1 0uuu
uu-u uuuu
RESET
Instruction Executed
0000h
---u uuuu
uu-u u0uu
Stack Overflow Reset (STVREN = 1)
0000h
---u uuuu
1u-u uuuu
Stack Underflow Reset (STVREN = 1)
0000h
---u uuuu
u1-u uuuu
Legend: u
= unchanged, x = unknown, - = unimplemented bit, reads as ‘0’.
Note 1:
When the wake-up is due to an interrupt and Global Enable bit (GIE) is set, the return address is pushed on
the stack and PC is loaded with the interrupt vector (0004h) after execution of PC + 1.



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