PIC16HV540 Microchip Technology, PIC16HV540 Datasheet - Page 12

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

PIC16HV540
TABLE 4-1:
DS40197B-page 12
Address
N/A
N/A
N/A
00h
01h
02h
03h
04h
05h
06h
Legend:
Note 1:
(1)
TRIS
OPTION
OPTION2 Contains control bits to configure pin changes, software enabled
INDF
TMR0
PCL
STATUS
FSR
PORTA
PORTB
Shaded boxes = unimplemented or unused, – = unimplemented, read as ’0’ (if applicable)
x = unknown, u = unchanged, q = value depends on condition.
The upper byte of the Program Counter is not directly accessible. See Section 4.6 of the PIC16HV540 data sheet (DS40197B) for an expla-
nation of how to access these bits.
Name
SPECIAL FUNCTION REGISTER SUMMARY
I/O control registers (TRISA, TRISB)
Contains control bits to configure Timer0 and Timer0/WDT prescaler --11 1111 --11 1111
WDT, regulation and brown-out
Uses contents of FSR to address data memory (not a physical regis-
ter)
8-bit real-time clock/counter
Low order 8 bits of PC
PCWUF
Bit 7
RB7
—
Bit 6
RB6
PA1
—
Indirect data memory address pointer
Bit 5
RB5
PA0
—
Bit 4
RB4
TO
—
Bit 3
RA3
RB3
PD
Preliminary
Bit 2
RA2
RB2
Z
Bit 1
RA1
RB1
DC
Bit 0
RA0
RB0
C
1111 1111 1111 1111
--11 1111 --uu uuuu
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
1111 1111 1111 1111
1001 1xxx 100q quuu
111x xxxx 111u uuuu
---- xxxx ---- uuuu
xxxx xxxx uuuu uuuu
Power-On
Value on
Reset
WDT Reset
MCLR and
Value on
2000 Microchip Technology Inc.
Wake-up on
Pin Change
1111 1111
--11 1111
--uu uuuu
uuuu uuuu
uuuu uuuu
1111 1111
000u uuuu
111u uuuu
---- uuuu
uuuu uuuu
Value on
1111 1111
--11 1111
--xx xxxx
xxxx xxxx
xxxx xxxx
1111 1111
x00x xxxx
111x xxxx
---- xxxx
xxxx xxxx
Brown-Out
Value on
Reset