UM0224 datasheet(14/34 Pages) STMICROELECTRONICS

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Running the demonstrations

STR75x demonstration software

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2.3.3

External interrupts

All External interrupts except the Key (EXTIT Line 7) are disabled in "SEL" function

execution.

The Key push button (EXTIT Line 7) is only enabled in voice recorder (To start and to stop

recording) application or if an alarm is occurred (To stop the alarm wave).

2.3.4

SMI Flash memory organization

The SMI Flash is used to store the Promotion speech, the OSIRIS wave, the recorded wave,

the wave test (in board self test) and the alarm wave. Below the SMI memory organization:

Figure 5.

SMI Flash memory organization

Table 3.

STR750 Demo External Interrupts

External Interrupts

Used for

EXTIT Line 0

JoyStick SEL push-button: menu navigation

EXTIT Line 3

JoyStick UP push-button: menu navigation

EXTIT Line 8

JoyStick DOWN push-button: menu navigation

EXTIT Line 12

JoyStick LEFT push-button: menu navigation

EXTIT Line 13

JoyStick RIGHT push-button: menu navigation

EXTIT Line 7

Key push-button:

Alarm stop and voice recorder application

EXTIT Line 15

RTC Alarm: Wake-up from low power modes

0x807FFFFF

0x80400000

0x80000000

0x80700000

0x80100000

TEST WAVE

FOR FUTURE USE

RECORDED WAVE

PROMOTION SPEECH

OSIRIS

0x80600000

ALARM WAVE

0x80620000

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