ST7262XXX datasheet(11/139 Pages) STMICROELECTRONICS

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ST7262xxx

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Doc ID 6996 Rev 5

3 REGISTER & MEMORY MAP

As shown in the Figure 7, the MCU is capable of

addressing 64K bytes of memories and I/O regis-

ters.

The available memory locations consist of 64

bytes of register locations, 768 bytes of RAM and

up to 16 Kbytes of user program memory. The

RAM space includes up to 128 bytes for the stack

from 0100h to 017Fh.

The highest address bytes contain the user reset

and interrupt vectors.

IMPORTANT: Memory locations marked as “Re-

served” must never be accessed. Accessing a re-

served area can have unpredictable effects on the

device.

Figure 7. Memory Map

0000h

Program Memory

Interrupt & Reset Vectors

HW Registers

BFFFh

0040h

003Fh

(see Table 2)

C000h

FFDFh

FFE0h

FFFFh

(see Table 6)

0340h

Reserved

033Fh

Short Addressing

RAM (zero page)

or Stack

017Fh

0040h

00FFh

768 Bytes RAM

E000h

8 KBytes

(128 Bytes)

16 KBytes

384 Bytes RAM

64 Bytes

01BFh

16-bit Addressing

RAM

Short Addressing

RAM (zero page)

017Fh

0040h

00FFh

448 Bytes

033Fh

16-bit Addressing

RAM

16-bit Addressing

RAM

or Stack

(128 Bytes)

16-bit Addressing

RAM

192 Bytes

Obsolete

Product(s)

- Obsolete

Product(s)

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