PIC16CE623 datasheet(11/108 Pages) MICROCHIP

Part #	PIC16CE623

Description	OTP 8-Bit CMOS MCU with EEPROM Data Memory

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Manufacturer	MICROCHIP [Microchip Technology]

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Preliminary

DS40182A-page 11

PIC16CE62X

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>

13

000h

0004

0005

01FFh

0200h

1FFFh

Stack Level 1

Stack Level 8

Reset Vector

Interrupt Vector

On-chip Program

Memory

CALL, RETURN

RETFIE, RETLW

Stack Level 2

FIGURE 4-2:

PROGRAM MEMORY MAP

AND STACK FOR THE

PIC16CE624

FIGURE 4-3:

PROGRAM MEMORY MAP

AND STACK FOR THE

PIC16CE625

PC<12:0>

13

000h

0004

0005

03FFh

0400h

1FFFh

Stack Level 1

Stack Level 8

Reset Vector

Interrupt Vector

On-chip Program

Memory

CALL, RETURN

RETFIE, RETLW

Stack Level 2

PC<12:0>

13

000h

0004

0005

07FFh

0800h

1FFFh

Stack Level 1

Stack Level 8

Reset Vector

Interrupt Vector

On-chip Program

Memory

CALL, RETURN

RETFIE, RETLW

Stack Level 2

62X.bk Page 11 Tuesday, March 10, 1998 3:40 PM

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