Rainbow-electronics DS2756 Manuel d'utilisateur

1 of 26 050806 Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revision

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 10 of 26 PROGRAMMABLE I/O The PIO pin can be configured as a general purpose

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 11 of 26 Table 1. PIO/DQ Pin Function REGISTER BIT SETTING PIO/DQ PIN FUNCT

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 12 of 26 ALARM COMPARATORS AND INTERRUPT THRESHOLDS Alarm interrupt thresho

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 13 of 26 Figure 11. Alarm Interrupt Threshold Register Formats Current Accu

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 14 of 26 Figure 12. Alarm And Suspend Mode Operating Diagram IEInterrupt En

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 15 of 26 SNAPSHOT MODE Measurement of the current and voltage can be synchro

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 16 of 26 MEMORY The DS2756 has a 256-byte linear address space with register

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 17 of 26 Table 2. Memory Map ADDRESS (HEX) DESCRIPTION READ/WRITE 00 Res

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 18 of 26 Table 3. SUMMARY OF SUSPEND MODES PIE1 PIE0 SAMPLE RATE WHILE IN S

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 19 of 26 EEC—EEPROM Copy Flag. A 1 in this read-only bit indicates that a Co

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 2 of 26 ABSOLUTE MAXIMUM RATINGS Voltage on PIO Pin, Relative to VSS -0.

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 20 of 26 1-Wire BUS SYSTEM The 1-Wire bus is a system that has a single bus

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 21 of 26 later. If the bus is left low for more than 120ms, slave devices on

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 22 of 26 the function command and wait for a reset pulse. This command can b

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 23 of 26 Table 4. FUNCTION COMMANDS COMMAND DESCRIPTION COMMAND PROTOCOL BU

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 24 of 26 Figure 21. Net Address Command Flow Chart YESNOYESYESYESYESNOMASTER

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 25 of 26 I/O SIGNALING The 1-Wire bus requires strict signaling protocols to

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 26 of 26 Figure 23. 1-Wire Write And Read Time Slots

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 3 of 26 Period Undervoltage Detect VUV 2.4V < VDD < 5.5V (Note 1) 2.

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 4 of 26 DETAILED DESCRIPTION The DS2756 performs temperature, voltage, and

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 5 of 26 Figure 2. Functional Diagram 1-WIRE INTERFACE AND ROM IDVOLTAGEREFE

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 6 of 26 POWER MODES The DS2756 has three power modes: Active, Suspend and Sl

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 7 of 26 error is introduced into both the Average Current and Accumulated Cu

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 8 of 26 command targeting the ACR register address. A write to the ACR resul

DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 9 of 26 Figure 6. Accumulation Bias Register Format Address 33h S 2