ST72254GX-AUTO datasheet(10/135 Pages) STMICROELECTRONICS

tên linh kiện	ST72254GX-AUTO

Giải thích chi tiết về linh kiện	8-bit MCU for automotive with single voltage Flash/ROM memory, ADC, 16-bit timers, SPI, I2C interfaces

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ST72104Gx-Auto, ST72215Gx-Auto, ST72216Gx-Auto, ST72254Gx-Auto

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3 REGISTER AND MEMORY MAP

As shown in the Figure 3, the MCU is capable of

addressing 64 Kbytes of memories and I/O regis-

ters.

The available memory locations consist of 128

bytes of register location, 256 bytes of RAM and

up to 8Kbytes 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 3. Memory Map

0000h

Program Memory

(4K, 8K bytes)

Interrupt & Reset Vectors

HW Registers

DFFFh

0080h

007Fh

(see Table 2)

E000h

FFDFh

FFE0h

FFFFh

(see Table 5 on page 26)

0180h

Reserved

017Fh

Short Addressing RAM

0100h

017Fh

0080h

00FFh

256 bytes RAM

4 Kbytes

F000h

E000h

8 Kbytes

FFFFh

Zero page

(128 bytes)

Stack or

16-bit Addressing RAM

(128 bytes)

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
STMicroelectronics	ST72254Gx	2Mb / 141P	8-bit data manipulation March 2008 Rev. 3

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