GENERAL DESCRIPTION

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.

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 PulseGeneration Capability

■ Individual Memory Pages can be Permanently Write-Protected or put in OTP EPROMEmulation 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

APPLICATIONS

● Autoconfiguration of Modular Systems such as Central-Office Switches, Cellular Base Stations, Access Products, Optical Network Units, and PBXs

● Accessory/PCB Identification