ST72141K2-AUTO データシートの表示（PDF） - STMicroelectronics

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ST72141K2-AUTO

8-bit MCU for automotive with electric-motor control, ADC, 16-bit timers, SPI interface

STMicroelectronics 

ST72141K2-Auto

1.4 REGISTER AND MEMORY MAP

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

dressing 64 Kbytes of memories and I/O registers.

The available memory locations consist of 128

bytes of register locations, 256 bytes of RAM and

8 Kbytes of user program memory. The RAM

Figure 5. Memory Map

space includes up to 64 bytes for the stack from

0140h to 017Fh.

The highest address bytes contain the user reset

and interrupt vectors.

0000h

007Fh

0080h

HW Registers

(see Table 3)

256 bytes RAM

017Fh

0180h

DFFFh

E000h

FFDFh

FFE0h

FFFFh

Reserved

Program Memory

(8 Kbytes)

Interrupt & Reset Vectors

(see Table 2)

0080h

Short Addressing

RAM

“Zero page”

(128 bytes)

00FFh

0100h

013Fh

0140h

017Fh

16-bit Addressing

RAM

(64 bytes)

Stack or

16-bit Addressing

RAM

(64 bytes)

Table 2. Interrupt Vector Map

Vector Address

FFE0-FFE1h

FFE2-FFE3h

FFE4-FFE5h

FFE6-FFE7h

FFE8-FFE9h

FFEA-FFEBh

FFEC-FFEDh

FFEE-FFEFh

FFF0-FFF1h

FFF2-FFF3h

FFF4-FFF5h

FFF6-FFF7h

FFF8-FFF9h

FFFA-FFFBh

FFFC-FFFDh

FFFE-FFFFh

Description

Not used

Not used

Not used

Not used

Not used

TIMER B interrupt vector

TIMER A interrupt vector

SPI interrupt vector

Motor control interrupt vector (events: E, O)

Motor control interrupt vector (events: C, D)

Motor control interrupt vector (events: R, Z)

External interrupt vector EI1: port B7..0

External interrupt vector EI0: port A7..0

Not used

TRAP (software) interrupt vector

RESET vector

Remarks

Internal Interrupt

External Interrupt

External Interrupt

CPU Interrupt

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