ST7232A datasheet(13/157 Pages) STMICROELECTRONICS

部件名	ST7232A

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

PDF	157 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

13 / 157 page

ST7232A

13/157

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.

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 5. Memory Map

0000h

RAM

Program Memory

(4K or 8K)

Interrupt & Reset Vectors

HW Registers

0080h

007Fh

(see Table 2)

E000h

FFDFh

FFE0h

FFFFh

(see Table 8)

0480h

Reserved

047Fh

Short Addressing

RAM (zero page)

256 Bytes Stack

Reserved

0100h

01FFh

027Fh

0080h

0200h

00FFh

or 047Fh

(384 Bytes)

FFFFh

8 KBytes

4 Kbytes

F000h

E000h

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