PIC16HV540 Microchip Technology, PIC16HV540 Datasheet - Page 35

• Manufacturer Part Number: PIC16HV540
• Description: Enhanced PIC16C54 EPROM-Based 8-Bit CMOS Microcontroller
• Manufacturer: Microchip Technology

TABLE 7-3:
TABLE 7-4:
FIGURE 7-6:
Power-on Reset
MCLR Reset (normal operation)
MCLR Wake-up (from SLEEP)
WDT Reset (normal operation)
WDT Wake-up (from SLEEP)
Wake-up from SLEEP on Pin Change
Brown-out Reset
Legend: u = unchanged, x = unknown, - = unimplemented read as ’0’.
Note 1: TO and PD bits retain their last value until one of the other reset conditions occur.
W
TRIS
OPTION
OPTION2
INDF
TMR0
PCL
STATUS
FSR
PORTA
PORTB
General Purpose Register Files
Legend: u = unchanged, x = unknown, - = unimplemented, read as ’0’, q = see tables in Section 7.10 for possible values.
Note 1:
2000 Microchip Technology Inc.
(1)
MCLR/V
2: The CLRWDT instruction will set the TO and PD bits.
V
(1)
DD
? = value depends on condition.
See Table 7-3 for reset value for specific conditions.
Register
PP
pin
RESET CONDITIONS FOR SPECIAL REGISTERS
RESET CONDITIONS FOR ALL REGISTERS
SIMPLIFIED BLOCK DIAGRAM OF ON-CHIP RESET CIRCUIT
RC OSC
On-chip
Condition
WDT
Power-up
Detect
Address
07-1Fh
N/A
N/A
N/A
N/A
00h
01h
02h
03h
04h
05h
06h
POR (Power-on Reset)
BOR (Brown-out Reset)
Power-On Reset
xxxx xxxx
1111 1111
--11 1111
--11 1111
xxxx xxxx
xxxx xxxx
1111 1111
1001 1xxx
111x xxxx
---- xxxx
xxxx xxxx
xxxx xxxx
Preliminary
WDT Time-out
(Start-up Timer)
Ripple Counter
8-bit Asynch
MCLR or WDT
RESET
uuuu uuuu
1111 1111
--11 1111
--uu uuuu
uuuu uuuu
uuuu uuuu
1111 1111
100? ?uuu
111u uuuu
---- uuuu
uuuu uuuu
uuuu uuuu
Reset
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
Addr: 02h
PCL
Wake-up on Pin
PIC16HV540
uuuu uuuu
1111 1111
--11 1111
--uu uuuu
uuuu uuuu
uuuu uuuu
1111 1111
000u uuuu
111u uuuu
---- uuuu
uuuu uuuu
uuuu uuuu
Change
S
R
Q
Q
Addr: 03h
1001 1xxx
u00u uuuu
1001 0uuu
u000 1uuu
1000 0uuu
000u uuuu
x00x xxxx
STATUS
DS40197B-page 35
CHIP RESET
xxxx xxxx
1111 1111
--11 1111
--xx xxxx
xxxx xxxx
xxxx xxxx
1111 1111
x00x xxxx
111x xxxx
---- xxxx
xxxx xxxx
xxxx xxxx
Brown-out
Reset
(1)
(2)