DS28EC20P+T
Memory
Technical Specifications
| Type | Description |
|---|---|
| Maximum Clock Speed | 52.7 kHz |
| Memory Size | 20Kbit |
| Data Retention - TDR (Year) | 40 Years |
| Write Cycle Time(tWC) | 10ms |
| Write Cycle Endurance | 200,000 cycles |
| Type | Description |
|---|---|
| Operating Temp | -40°C ~ +85°C |
| Features | Page write protection function;Noise suppression function |
| Working Voltage V | 4.625 V |
| Interface | Single bus |
| Package / Case | TSOC-6 |
Product Introduction
The DS28EC20 is a 20480-bit, 1-Wire EEPROM organized as 80 memory pages of 256 bits each. An additional page is set aside for control functions. Data is written to a 32-byte scratchpad, verified, and then copied to the EEPROM memory. As a special feature, blocks of eight memory pages can be write protected or put in EPROM-Emulation mode, where bits can only be changed from a 1 to a 0 state. The DS28EC20 communicates over the single-conductor 1-Wire bus. The communication follows the standard 1-Wire protocol. Each device has its own unalterable and unique 64-bit ROM registration number. The registration number is used to address the device in a multidrop 1-Wire net environment.
Features
- 20480 Bits of Nonvolatile (NV) EEPROM Partitioned into Eighty 256-Bit Pages
- Individual 8-Page Groups of Memory Pages (Blocks) can be Permanently Write Protected or Put in OTP EPROM-Emulation Mode ("Write to 0")
- Read and Write Access Highly Backward Compatible to Legacy Devices (e.g., DS2433)
- 256-Bit Scratchpad with Strict Read/Write Protocols Ensures Integrity of Data Transfer
- 200k Write/Erase Cycle Endurance at +25℃
- Unique Factory-Programmed 64-Bit Registration Number Ensures Error-Free Device Selection and Absolute Part Identity
- Switchpoint Hysteresis and Filtering to Optimize Performance in the Presence of Noise
- Communicates to Host at 15.4kbps or 90kbps Using 1-Wire Protocol
- Low-Cost TO-92 Package
- Operating Range: 4V to 5.25V, -40℃ to +85℃
- Operating Range: 3.135V to 3.465V, 0℃ to +70℃ (Standard Speed only)
- IEC 1000-4-2 Level 4 ESD Protection (±8kV Contact, ±15kV Air, Typical) for I/O Pin
Applications
- - Device Authentication - IEEE 1451.4 Sensor TEDS - Ink/Toner Cartridges - Medical Sensors - PCB Identification - Wireless Base Stations
Datasheet
Alternative Parts
Common DS28EC20P+T alternatives overseas buyers search for:
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS3 |
| ECCN | EAR99 |
| CNHTS | 8542329000 |
| USHTS | 8542320071 |
| TARIC | 8542329000 |
| Type | Details |
|---|---|
| CAHTS | 8542330000 |
| BRHTS | 85423299 |
| INHTS | 85423200 |
| MXHTS | 8542.32.99 |
Sourcing Information
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