Image for reference only
AT24C02D-SSHM-T
TSSOP-8 (4.4x3.0mm)
The AT24C02D-SSHM-T from Microchip is a 2Kb I2C serial EEPROM with wide 1.7-5.5V operating range and 1 million write cycle endurance in a TSSOP-8 package for parameter storage.
| الحزمة | TSSOP-8 (4.4×3.0mm) |
The AT24C02D-SSHM-T from Microchip is a 2Kb I2C serial EEPROM with wide 1.7-5.5V operating range and 1 million write cycle endurance in a TSSOP-8 package for parameter storage.
The AT24C02D-SSHM-T is a 2Kb (256 x 8-bit) I2C Serial EEPROM from Microchip in TSSOP-8, operating from 1.7-5.5V. The D-version features a Schmitt trigger on SCL/SDA inputs for improved noise immunity and supports 1MHz I2C (Fast-mode Plus) at 5V. The memory is organized as a single 256-byte block with 8-byte page write capability. I2C protocol: the master initiates communication with a START condition, followed by the device address byte (1010+A2+A1+A0+R/W). The A0-A2 pins set the lower 3 bits of the address, allowing up to 8 AT24C02D devices on the same I2C bus. For a write operation: after the address byte + ACK, the master sends the 8-bit memory address, then 1-8 data bytes. After the last byte, a STOP condition triggers the internal write cycle (5ms max). The page write buffer holds 8 bytes; if more than 8 bytes are sent, the address wraps within the page (address rollover). For a read operation: the master first writes the memory address (random read), then issues a re-START with R/W=1, and clocks out data bytes. The WP (Write Protect) pin, when HIGH, blocks all write operations to the entire memory array, protecting critical data like calibration constants. The endurance is 1,000,000 write cycles per byte with 100-year data retention. The -SSHM-T suffix specifies TSSOP-8, 1.7-5.5V, tape-and-reel. The AT24C02D is used for: storing MAC addresses, serial numbers, calibration data, and configuration parameters in embedded systems.
| دبوس | الاسم | النوع | الوظيفة |
|---|---|---|---|
| 1 | A0 | المدخلات | Address input 0 (sets I2C slave address bit, connect to VCC or GND) |
| 2 | A1 | المدخلات | Address input 1 (sets I2C slave address bit) |
| 3 | A2 | المدخلات | Address input 2 (sets I2C slave address bit, allows 8 devices on bus) |
| 4 | GND | الطاقة | أرضي |
| 5 | SDA | الإدخال/الإخراج | I2C serial data (bidirectional, open-drain, requires external pull-up) |
| 6 | SCL | المدخلات | I2C serial clock (open-drain, requires external pull-up) |
| 7 | WP | المدخلات | Write protect (HIGH=protect entire array, LOW=normal read/write) |
| 8 | VCC | الطاقة | Supply (1.7-5.5V) |
| الشركة المصنعة | رقم الجزء | الحزمة | الملاحظات |
|---|---|---|---|
| الرقاقة الدقيقة | AT24C02D-SSHM-T | TSSOP-8 | Same device, Microchip brand |
| الرقاقة الدقيقة | AT24C04D-SSHM-T | TSSOP-8 | 4Kb version, double density |
| STMicroelectronics | M24C02-WMN6P | TSSOP-8 | 2Kb EEPROM, ST brand |
| على شبه | CAT24C02WI-GT3 | TSSOP-8 | 2Kb EEPROM, ON Semi brand |
| روهم | BR24C02FVM-W | TSSOP-8 | 2Kb EEPROM, Rohm brand |
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
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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