PIC16F720_13 Datasheet, PDF (11/254 Pages) Microchip Technology – 20-Pin Flash Microcontrollers

PIC16(L)F720/721
2.0 MEMORY ORGANIZATION
2.1 Program Memory Organization
The PIC16(L)F720/721 has a 13-bit program counter
capable of addressing a 8K x 14 program memory
space. Table 2-1 shows the memory sizes
implemented. Accessing a location above these
boundaries will cause a wrap-around within the
implemented memory space. The Reset vector is at
0000h and the interrupt vector is at 0004h.
TABLE 2-1: DEVICE SIZE AND ADDRESSES
Device
Program Memory Size
(Words)
Last Program Memory
Address
High-Endurance Flash
Memory Address Range⁽¹⁾
PIC16F720
PIC16LF720
2048
07FFh
PIC16F721
PIC16LF721
4096
0FFFh
Note 1: High-Endurance Flash applies to the low byte of each address in the range.
0780h-07FFh
0F80h-0FFFh
FIGURE 2-1:
PROGRAM MEMORY MAP
AND STACK FOR THE
PIC16(L)F720
FIGURE 2-2:
PROGRAM MEMORY MAP
AND STACK FOR THE
PIC16(L)F721
PC<12:0>
CALL, RETURN
13
RETFIE, RETLW
Stack Level 1
Stack Level 2
PC<12:0>
CALL, RETURN
13
RETFIE, RETLW
Stack Level 1
Stack Level 2
Stack Level 8
Reset Vector
0000h
Stack Level 8
Reset Vector
0000h
On-chip
Program
Memory
Interrupt Vector
Page 0
Wraps to Page 0
Wraps to Page 0
Wraps to Page 0
0004H
0005h
07FFh
0800h
0FFFh
1000h
17FFh
1800h
1FFFh
On-chip
Program
Memory
Interrupt Vector
Page 0
Page 1
Wraps to Page 0
Wraps to Page 1
0004H
0005h
07FFh
0800h
0FFFh
1000h
17FFh
1800h
1FFFh
 2010-2013 Microchip Technology Inc.
DS41430D-page 11