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DS2431P+TR Datasheet(PDF) 5 Page - Maxim Integrated Products |
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DS2431P+TR Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 26 page Pin Description PIN TSOC TO-92 TDFN-EP SFN UCSPR NAME FUNCTION 3, 4, 5, 6 3 1, 4, 5, 6 — A2, A3, C2, C3 N.C. Not Connected 2 2 2 1 C1 IO 1-Wire Bus Interface. Open-drain signal that requires an external pullup resistor. 1 1 3 2 A1 GND Ground Reference — — EP — — EP Exposed Pad. Solder evenly to the board’s ground plane for proper operation. Refer to Application Note 3273: Exposed Pads: A Brief Introduction for additional information. 1024-Bit, 1-Wire EEPROM _______________________________________________________________________________________ 5 Detailed Description The DS2431 combines 1024 bits of EEPROM, an 8-byte register/control page with up to 7 user read/write bytes, and a fully featured 1-Wire interface in a single chip. Each DS2431 has its own 64-bit ROM registration number that is factory lasered into the chip to provide a guaranteed unique identity for absolute traceability. Data is transferred serially through the 1-Wire protocol, which requires only a single data lead and a ground return. The DS2431 has an additional memory area called the scratchpad that acts as a buffer when writing to the main memory or the register page. Data is first written to the scratchpad from which it can be read back. After the data has been verified, a Copy Scratchpad command transfers the data to its final memory location. The DS2431 applications include accessory/PCB identification, medical sensor calibra- tion data storage, analog sensor calibration including IEEE P1451.4 smart sensors, ink and toner print car- tridge identification, and after-market management of consumables. Overview The block diagram in Figure 1 shows the relationships between the major control and memory sections of the DS2431. The DS2431 has four main data components: 64-bit lasered ROM, 64-bit scratchpad, four 32-byte pages of EEPROM, and a 64-bit register page. MEMORY FUNCTION CONTROL UNIT DATA MEMORY 4 PAGES OF 256 BITS EACH CRC-16 GENERATOR 64-BIT SCRATCHPAD 1-Wire FUNCTION CONTROL 64-BIT LASERED ROM PARASITE POWER IO REGISTER PAGE 64 BITS DS2431 Figure 1. Block Diagram |
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Similar Description - DS2431P+TR |
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