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. Applications * 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 * 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 https://elecena.pl/product/22302363/4096-bit-addressable-1-wire-eeprom-with-pio 2022-12-25 https://elecena.pl/product/22302363/4096-bit-addressable-1-wire-eeprom-with-pio 2025-01-17