Image for reference only
DS2431+
TO-92
The DS2431+ from Maxim is a 1-Wire 1Kb EEPROM with unique 64-bit ROM ID for identification, calibration data storage, and asset tracking in TO-92 package.
| الحزمة | TO-92 |
The DS2431+ from Maxim is a 1-Wire 1Kb EEPROM with unique 64-bit ROM ID for identification, calibration data storage, and asset tracking in TO-92 package.
The DS2431+ is a 1-Wire 1Kbit EEPROM from Maxim Integrated in TO-92-4 (or TSOC-4 for SMD), providing 128 bytes of non-volatile memory accessible through a single data wire plus ground. The 1-Wire protocol uses a single open-drain data line (DQ) with an external 2.2k-ohm pull-up resistor to VCC. Communication is half-duplex and bit-sequential: the master (MCU) initiates all transactions by pulling DQ LOW for a reset pulse (480us minimum). The DS2431 responds with a presence pulse (60-240us LOW). Data is transferred in time slots: a write-1 slot consists of pulling DQ LOW for 1-15us then releasing; a write-0 slot holds DQ LOW for 60us minimum. The DS2431 has four 32-byte memory pages. Each page can be individually write-protected (EPROM mode) or put into EPROM emulation mode where writes can only change 1s to 0s. The 64-bit unique ROM ID (lasered at factory) serves as a serial number and network address, allowing multiple 1-Wire devices on the same bus. The ROM ID contains: 8-bit family code (0x2D), 48-bit serial number, 8-bit CRC. The device includes a 16-bit CRC generator for data integrity. Operating voltage range is 2.8V to 5.5V, derived parasitically from the DQ line during communication. Write endurance is 100,000 cycles. The TO-92 package is suitable for iButton and cable-attached applications.
| دبوس | الاسم | النوع | الوظيفة |
|---|---|---|---|
| 1 | GND | الطاقة | Ground (also serves as data reference) |
| 2 | نورث كارولاينا | - | No connect (do not connect externally) |
| 3 | نورث كارولاينا | - | No connect (do not connect externally) |
| 4 | DQ | الإدخال/الإخراج | 1-Wire data input/output (open-drain, requires external pull-up) |
| الشركة المصنعة | رقم الجزء | الحزمة | الملاحظات |
|---|---|---|---|
| مكسيم | DS2431P+ | TSOC-4 | Same device, surface-mount package |
| مكسيم | DS28E05P+T | TSOC-4 | 1-Wire 1Kb EEPROM, 4 I/O pins |
| مكسيم | DS2432P+ | TSOC-4 | 1-Wire 1Kb EEPROM with SHA-1 engine |
| مكسيم | DS2433P+ | TSOC-4 | 1-Wire 4Kb EEPROM, larger memory |
| مكسيم | DS28E18-Q1+ | TSSOP-16 | 1-Wire to I2C/SPI bridge + 2Kb EEPROM |
العلامة التجارية:
الحزمة:
دورة الشحن 3 ~ 7 أيام
الحد الأدنى للطلب هو 1
العلامة التجارية:
الحزمة:
دورة الشحن 3 ~ 7 أيام
الحد الأدنى للطلب هو 1
العلامة التجارية:
الحزمة:
دورة الشحن 3 ~ 7 أيام
الحد الأدنى للطلب هو 1
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