DS28E04-100:4096-Bit Addressable 1-Wire EEPROM with PIO

1-Wire®-Addressable, 4Kb EEPROM with Programmable I/O for Use in Rack-Based, Multicard Applications

The DS28E04-100 is a 4096-bit, 1-Wire® EEPROM chip with seven address inputs. The address inputs are directly mapped into the 1-Wire 64-bit Device ID Number to easily enable the host system to identify the physical location or functional association of the DS28E04-100 in a multidevice 1-Wire network environment. The 4096-bit EEPROM array is configured as 16 pages of 32 bytes with a 32-byte scratchpad to perform write operations. EEPROM memory pages can be individually write protected or put in EPROM-emulation mode, where bits can only be changed from a 1 to a 0 state. In addition to the memory, the DS28E04-100 has two general-purpose I/O ports that can be used for input or to generate level and/or pulse outputs. Activity registers also capture port activity for state change monitoring. The DS28E04-100 communicates over the single-contact 1-Wire bus. The communication follows the standard Maxim 1-Wire protocol.

Key Features
  • 4096 bits of EEPROM Memory Partitioned into 16 Pages of 256 Bits
  • Seven Address Inputs for Physical Location Configuration
  • Two General-Purpose PIO Pins with Pulse-Generation Capability
  • Individual Memory Pages can be Permanently Write-Protected or put in OTP EPROM Emulation Mode ("Write to 0")
  • Communicates to Host with a Single Digital Signal at 15.3kbps or 111kbps Using 1-Wire Protocol
  • Parasitic or VCC Powered
  • Conditional Search Based on PIO Status or PIO Activity
  • Switchpoint Hysteresis and Filtering to Optimize Performance in the Presence of Noise
  • Reads and Writes Over a Wide 2.8V to 5.25V Voltage Range from -40°C to +85°C
  • 16-Pin, 150-mil SO Package
DS28E04-100: Typical Operating Circuit
DS28E04-100: Typical Operating Circuit
  • Access Products, Optical Network Units, and PBXs
  • Accessory/PCB Identification
  • Autoconfiguration of Modular Systems such as Central-Office Switches, Cellular Base Stations, Access Products, Optical Network Units, and PBXs
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DS28E04-100 Data SheetDS28E04-100.pdf
Part NumberApplicationsMemory TypeMemory SizeBus TypeVSUPPLY
minmaxSee Notes
DS28E04-100Asset Tracking
Peripheral ID and Control
Rack Card ID
EEPROM4K x 11-Wire2.85.25SOIC(N)/16$2.31 @1k
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
DS28E04S-100No Longer AvailableDS28E04S-100+SOIC(N),;16 pin;61.9 mm²-40°C to +85°CNo
DS28E04S-100+ActiveSOIC(N),;16 pin;61.9 mm²-40°C to +85°CLead Free
DS28E04S-100+TActiveSOIC(N),;16 pin;61.9 mm²-40°C to +85°CLead Free
DS28E04S-100/TNo Longer AvailableDS28E04S-100+TSOIC(N),;16 pin;61.9 mm²-40°C to +85°CNo
DS28E04-100.pdf DS28E04-100
DS28E04-100_cn.pdf DS28E04-100
DS28E04-100.pdf DS28E04-100
DS28E04-100.pdf DS28E04-100
Understanding the DS1WM Synthesizable 1-Wire Bus Master DS1923
1-Wire Master Device Configuration DS1920
1-Wire File Structure DS1923
Reading and Writing 1-Wire® Devices Through Serial Interfaces DS1923
DS28E04-100.pdf DS28E04-100
DS28E04-100_cn.pdf DS28E04-100