ST7232A View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST7232A

8-BIT MICROCONTROLLER WITH 8K FLASH/ROM, ADC, 4 TIMERS, SPI, SCI INTERFACE

STMicroelectronics 

ST7232A

3 REGISTER & MEMORY MAP

As shown in Figure 5, the MCU is capable of ad-

dressing 64K bytes of memories and I/O registers.

The available memory locations consist of 128

bytes of register locations, up to 384 bytes of RAM

and up to 8 Kbytes of user program memory. The

RAM space includes up to 256 bytes for the stack

from 0100h to 01FFh.

Figure 5. Memory Map

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.

0000h

007Fh

0080h

047Fh

0480h

HW Registers

(see Table 2)

RAM

(384 Bytes)

Reserved

E000h

FFDFh

FFE0h

FFFFh

Program Memory

(4K or 8K)

Interrupt & Reset Vectors

(see Table 8)

0080h

00FFh

0100h

01FFh

0200h

027Fh

or 047Fh

Short Addressing

RAM (zero page)

256 Bytes Stack

Reserved

E000h

F000h

FFFFh

8 KBytes

4 Kbytes

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