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

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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 Dallas Semiconductor 1-Wire protocol.

Key Features

Applications/Uses

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 V_CC 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

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

Key Specifications: Memory (EPROM, EEPROM, ROM, NV SRAM)

Part Number

Memory Type

Memory Size

Bus Type

Real-Time Clock

DIP with Internal Battery

PowerCap Package

Battery Monitor

With GPIO

Single Piece Module

Features

Supply Voltage (min) (V)

Supply Voltage (max) (V)

Price^**

DS28E04-100

EEPROM

4K x 1

1-Wire

Yes

•	Addressable Device ID

•	Serial Number

2.8

5.25

$2.10 @ 1k

See All Memory (EPROM, EEPROM, ROM, NV SRAM) (69)

Key Specifications: Mixed Signal Memory Devices

Part Number

Memory Type

Memory Size

Bus Type

Number of PIO Channels

Features

V_CC (V)

Package

Price^**

DS28E04-100

EEPROM

4K x 1

1-Wire

•	Addressable Device ID

•	Serial Number

2.8 to 5.25

SOIC/16

$2.10 @ 1k

See All Mixed Signal Memory Devices (9)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.