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PIC16CE625T-04ISS

OTP 8-Bit CMOS MCU with EEPROM Data Memory

Microchip Technology 

4.0 MEMORY ORGANIZATION

4.1 Program Memory Organization

The PIC16CE62X has a 13-bit program counter capa-

ble of addressing an 8K x 14 program memory space.

Only the first 512 x 14 (0000h - 01FFh) for the

PIC16CE623, 1K x 14 (0000h - 03FFh) for the

PIC16CE624 and 2K x 14 (0000h - 07FFh) for the

PIC16CE625 are physically implemented. Accessing a

location above these boundaries will cause a

wrap-around within the first 512 x 14 space

(PIC16CE623) or 1K x 14 space (PIC16CE624) or 2K

x 14 space (PIC16CE625). The reset vector is at 0000h

and the interrupt vector is at 0004h (Figure 4-1,

Figure 4-2, Figure 4-3).

FIGURE 4-1:

PROGRAM MEMORY MAP

AND STACK FOR THE

PIC16CE623

PC<12:0>

CALL, RETURN

RETFIE, RETLW

13

Stack Level 1

Stack Level 2

Stack Level 8

Reset Vector

000h

Interrupt Vector

On-chip Program

Memory

0004

0005

01FFh

0200h

1FFFh

PIC16CE62X

FIGURE 4-2:

PROGRAM MEMORY MAP

AND STACK FOR THE

PIC16CE624

PC<12:0>

CALL, RETURN

13

RETFIE, RETLW

Stack Level 1

Stack Level 2

Stack Level 8

Reset Vector

000h

Interrupt Vector

On-chip Program

Memory

0004

0005

03FFh

0400h

1FFFh

FIGURE 4-3:

PROGRAM MEMORY MAP

AND STACK FOR THE

PIC16CE625

PC<12:0>

CALL, RETURN

13

RETFIE, RETLW

Stack Level 1

Stack Level 2

Stack Level 8

Reset Vector

000h

Interrupt Vector

On-chip Program

Memory

0004

0005

07FFh

0800h

1FFFh

© 1999 Microchip Technology Inc.

DS40182C-page 11

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