نظرة عامة على المنتج
DS1232+ from ADI/Maxim is a microprocessor monitor with power-on reset, brownout detection, and watchdog timer. Active-low reset with 350ms pulse. Three watchdog timeout options. Manual reset with internal debounce. + suffix = RoHS lead-free.
مبدأ العمل
Monitors VCC and asserts reset when below threshold (4.87V for 5V). Watchdog requires periodic ST strobes; timeout causes reset. TD pin selects timeout. PBRST provides manual reset with debounce. Reset guaranteed active down to VCC=1V.
Pin Description
| دبوس | الاسم | الوظيفة |
|---|---|---|
| 1 | PBRST | Pushbutton reset |
| 2 | TD | Timeout select |
| 3 | TOL | Tolerance select |
| 5 | RST | Reset (active low) |
| 6 | RST | Reset (active high) |
| 7 | ST | Watchdog strobe |
| 8 | VCC | 5V supply |
التطبيقات
- Embedded MCU reset and watchdog
- Industrial supervisory
- Board-level system reset
Alternative Models
| الشركة المصنعة | رقم الجزء | الملاحظات |
|---|---|---|
| TI | TPS3823-33DBVR | 3.3V supervisor |
| الرقاقة الدقيقة | TC1232CPA | Similar monitor |