19-6134 Rev 12/11 DS28E04-100 4096-Bit Addressable 1-Wire EEPROM with PIO GENERAL DESCRIPTION FEATURES 4096 bits of EEPROM Memory Partitioned into The DS28E04-100 is a 4096-bit, 1-Wire EEPROM 16 Pages of 256 Bits chip with seven address inputs. The address inputs Seven Address Inputs for Physical Location are directly mapped into the 1-Wire 64-bit Device ID Configuration Number to easily enable the host system to identify the physical location or functional association of the Two General-Purpose PIO Pins with Pulse- Generation Capability DS28E04-100 in a multidevice 1-Wire network en- vironment. The 4096-bit EEPROM array is configured Individual Memory Pages can be Permanently as 16 pages of 32 bytes with a 32 byte scratchpad to Write-Protected or put in OTP EPROM- perform write operations. EEPROM memory pages Emulation Mode (Write to 0) can be individually write protected or put in EPROM- Communicates to Host with a Single Digital emulation mode, where bits can only be changed Signal at 15.3kbps or 111kbps Using 1-Wire from a 1 to a 0 state. In addition to the memory, the Protocol DS28E04-100 has two general-purpose I/O ports that Parasitic or V Powered CC can be used for input or to generate level and/or Conditional Search Based on PIO Status or PIO pulse outputs. Activity registers also capture port Activity activity for state change monitoring. The DS28E04- Switchpoint Hysteresis and Filtering to Optimize 100 communicates over the single-contact 1-Wire Performance in the Presence of Noise bus. The communication follows the standard Maxim Reads and Writes Over a Wide 2.8V to 5.25V 1-Wire protocol. Voltage Range from -40C to +85C 16-Pin, 150-mil SO Package APPLICATIONS Autoconfiguration of Modular Systems such as ORDERING INFORMATION Central-Office Switches, Cellular Base Stations, PART TEMP RANGE PIN-PACKAGE Access Products, Optical Network Units, and DS28E04S-100+ -40C to +85C 16 SO PBXs 16 SO DS28E04S-100+T -40C to +85C Accessory/PCB Identification (2.5k pieces) + Indicates lead(Pb)-free/RoHS-compliant package. T = Tape and reel. TYPICAL OPERATING CIRCUIT VCC RPUP PIN CONFIGURATION PX.Y A6 A6 IO V IO V CC CC POL POL C P1 P1 LED P0 P0 GND GND A0 A0 DS28E04 1 RST1 RST0 DS28E04 7 SO (150 mils) Commands, Registers, and Modes are capitalized for clarity. 1-Wire is a registered trademark of Maxim Integrated Products, Inc. 1 of 37 DS28E04-100: 4096-Bit 1-Wire Addressable EEPROM with PIO ABSOLUTE MAXIMUM RATINGS All Pins: Voltage to GND -0.5V, +6V All Pins: Sink Current 20mA Operating Temperature Range -40C to +85C Junction Temperature +150C Storage Temperature Range -55C to +125C Lead Temperature (soldering, 10s) +300C Soldering Temperature (reflow) +260C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to the absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = 2.8V to 5.25V, V = V , not connected or grounded, T = -40C to +85C.) PUP CC PUP A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Ground Current I (Notes 1, 2, 3) 20 mA GND Supply Current V = V (Note 3) I CC PUP 1 mA CC Device idle A0 to A6 not connected Standby Supply Current I 11 A CCS PINS A0 TO A6 Input Low Voltage V (Note 1) 0.30 V ILA V - X Input High Voltage V V = max(V , V ) (Note 1) V IHA X PUP CC 0.3V Input Load Current I Pin at GND (Note 4) -1.1 A LA POL PIN Input Low Voltage V (Note 1) 0.30 V ILPOL V - X Input High Voltage V V = max(V , V ) (Note 1) V IHPOL X PUP CC 0.3V Leakage Current I Pin at 5.25V 1 A LKPOL PIO PINS Input Low Voltage V (Note 1) 0.30 V ILP V - X Input High Voltage V V = max(V , V ) (Note 1) V IHP X PUP CC 0.3V Output Low Voltage at V (Note 5) 0.4 V OLP 4mA Leakage Current I Pin at 5.25V 1 A LKP Minimum Sensed PIO t (Note 6) 1 10 s PWMIN Pulse Output Pulse Duration t (Note 7) 250 1000 ms PULSE IO PIN GENERAL DATA 1-Wire Pullup Resistance R (Notes 1, 8) 0.3 2.2 k PUP Input Capacitance C (Notes 3, 9) 100 800 pF IO IO pin at V , A0 to A6 not connected, PUP 0.05 11.00 V at GND CC Input Load Current I A L IO pin at V , A0 to A6 not connected, PUP 0.05 8.25 V at V CC PUP High-to-Low Switching V (Notes 3, 10, 11) 0.46 4.40 V TL Threshold Input Low Voltage VIL (Notes 1, 12) 0.3 V V - X Input High Voltage V V = max(V , V ) (Note 1) V IH X PUP CC 0.3V Low-to-High Switching V (Notes 3, 10, 13) 1.0 4.9 V TH Threshold Switching Hysteresis V (Notes 3, 10, 14) 0.21 1.70 V HY Output Low Voltage V At 4mA Current Load (Note 5) 0.4 V OL Standard speed, R = 2.2k 5 PUP Recovery Time Overdrive speed, R = 2.2k 2 PUP t s REC (Notes 1, 15) Overdrive speed, directly prior to reset 5 pulse R = 2.2k PUP Standard speed (Note 16) 0.5 5.0 Rising-Edge Hold-Off Time t s REH (Note 3) Overdrive speed Not applicable (0) 2 of 37