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DS1854B-050 Datasheet(PDF) 8 Page - Maxim Integrated Products |
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DS1854B-050 Datasheet(HTML) 8 Page - Maxim Integrated Products |
8 / 22 page Dual Temperature-Controlled Resistors with Two Monitors 8 _____________________________________________________________________ DEVICE ADDRESS AD (AUXILIARY DEVICE ENABLE A0h) MD (MAIN DEVICE ENABLE) DEVICE ADDRESS ADDRESS ADDRESS ADDRESS R/W R/W TxF DATA BUS R/W TxF RxL LOS ADEN ADFIX SDA SCL IN1 OUT1 2-WIRE INTERFACE MINT INV1 Tx FAULT IN2 RHIZ MON1 MON2 VCC GND WPEN OUT2 INV2 EEPROM 128 x 8 BIT 00h-7Fh STANDARDS PROT AUX AD ADDRESS TABLE SELECT R/W EEPROM 72 x 8 BIT 80h-C7h TABLE 02 RESISTOR 0 LOOK-UP TABLE PROT MAIN MD EEPROM 72 x 8 BIT 80h-C7h SRAM 32 x 8 BIT 60h-7Fh NOT PROTECTED PROT MAIN MD TEMP INDEX ALARM FLAGS MUX CTRL MEASUREMENT ADDRESS TABLE SELECT R/W EEPROM 72 x 8 BIT 80h-C7h TABLE 03 RESISTOR 1 LOOK-UP TABLE PROT MAIN MD TEMP INDEX VCC RRHIZ RWPEN MONITORS LIMIT HIGH MONITORS LIMIT LOW TABLE SELECT TEMP INDEX MINT (BIT) INTERNAL TEMP VCC MUX A/D 12-BIT A/D CTRL VCC VCC PROT AUX PROT MAIN MPEN APEN COMPARATOR MEASUREMENT ALARM FLAGS MONITORS LIMIT LOW MONITORS LIMIT HIGH COMP CTRL INTERRUPT MINT TABLE 01 EEPROM 16 x 8 BIT 80h-8Fh VENDOR PROT MAIN MD R/W DEVICE ADDRESS ADDRESS TABLE SELECT MASKING (TMP, VCC, MON1, MON2) ADFIX (BIT) ADEN (BIT) MPEN (BIT) APEN (BIT) INV2 (BIT) INV1 (BIT) RHIZ RESISTOR 0 50k Ω FULL SCALE 256 POSITIONS L0 H0 RHIZ RESISTOR 1 50k Ω FULL SCALE 256 POSITIONS L1 H1 Figure 1. DS1854 Block Diagram |
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