MAX6884ETP MAXIM [Maxim Integrated Products], MAX6884ETP Datasheet
MAX6884ETP
Related parts for MAX6884ETP
MAX6884ETP Summary of contents
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... CC ♦ 512-Bit User EEPROM Endurance: 100,000 Erase/Write Cycles 2 C-com- Data Retention: 10 Years ♦ SMBus/I Configuration/Communication Interface ♦ ±1% Threshold Accuracy Applications PART MAX6884ETP MAX6885ETP Pin Configurations and Typical Operating Circuit appear at end of data sheet. PROGRAMMABLE INTERNAL ADC OUTPUTS Yes Features ...
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EEPROM-Programmable, Hex Power-Supply Supervisory Circuits ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) , RESET, UV/OV, WDO........................-0.3V to +6V IN1–IN6 WDI, MR, MARGIN, SDA, SCL, A0...........................-0.3V to +6V AUXIN, DBP, REFIN .................................................-0.3V to +3V Input/Output Current (all pins)..........................................±20mA ...
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Power-Supply Supervisory Circuits ELECTRICAL CHARACTERISTICS (continued) = 2.7V to 5.8V, AUXIN = WDI = GND, MARGIN = MR = DBP – IN1 IN4 CC values are +25°C.) (Notes PARAMETER ...
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EEPROM-Programmable, Hex Power-Supply Supervisory Circuits ELECTRICAL CHARACTERISTICS (continued) = 2.7V to 5.8V, AUXIN = WDI = GND, MARGIN = MR = DBP – IN1 IN4 CC values are +25°C.) (Notes ...
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Power-Supply Supervisory Circuits TIMING CHARACTERISTICS = 2.7V to 5.8V, AUXIN = WDI = GND, MARGIN = MR = DBP – IN1 IN4 CC values are +25°C.) (Notes IN1 PARAMETER SYM ...
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EEPROM-Programmable, Hex Power-Supply Supervisory Circuits = 5V, AUXIN = WDI = GND, MARGIN = MR = DBP. Typical values are – IN1 IN4 CC V SUPPLY CURRENT CC vs. V SUPPLY VOLTAGE CC 1.00 0.95 ...
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Power-Supply Supervisory Circuits = 5V, AUXIN = WDI = GND, MARGIN = MR = DBP. Typical values are – IN1 IN4 RESET OR UV/OV OUTPUT PROPAGATION DELAY vs. TEMPERATURE 3.00 2.75 2.50 ...
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EEPROM-Programmable, Hex Power-Supply Supervisory Circuits PIN NAME MAX6884 MAX6885 MARGIN SDA 9 9 SCL — REFIN 12 — AUXIN — 11 DBP 15 15 ...
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Power-Supply Supervisory Circuits PIN NAME MAX6884 MAX6885 18 18 IN3 19 19 IN2 20 20 IN1 — — EP Detailed Description The MAX6884/MAX6885 EEPROM-configurable, multi- voltage supply supervisors monitor six voltage-detector inputs, one auxiliary input, and one watchdog input, and ...
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EEPROM-Programmable, Hex Power-Supply Supervisory Circuits The MAX6884/MAX6885 feature a watchdog timer with programmable initial and normal timeout periods from 6.25ms to 102.4s. WDO asserts when WDI is not tog- gled from high-to-low or low-to-high within the appro- priate watchdog timeout ...
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Power-Supply Supervisory Circuits IN_ (ADC MUX) (ADC) AUXIN SDA, SCL A0 ANALOG BLOCK DIGITAL BLOCK Figure 1. Top-Level Block Diagram ______________________________________________________________________________________ EEPROM-Programmable, Hex LOGIC NETWORK COMPARATORS FOR OUTPUTS MR MARGIN (ADC REGISTERS) SERIAL REGISTER BANK INTERFACE BOOT CONTROLLER ...
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EEPROM-Programmable, Hex Power-Supply Supervisory Circuits IN1 IN2 IN2 DETECTOR IN3 IN3 DETECTOR IN4 IN4 DETECTOR IN5 IN5 DETECTOR IN6 IN6 DETECTOR REFIN (N.C.) AUXIN (N.C.) VIRTUAL DIODES V CC 1µF 2.55V 1.25V LDO REFERENCE DBP 1µF *SEE THE EXTERNAL VOLTAGE-DIVIDER ...
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Power-Supply Supervisory Circuits Powering the MAX6884/MAX6885 The MAX6884/MAX6885 derive power from the voltage- detector inputs: IN1–IN4 or through an externally sup- plied virtual diode-ORing scheme selects the CC positive input that supplies power to the device (see ...
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EEPROM-Programmable, Hex Power-Supply Supervisory Circuits Table 3. ADC Registers (MAX6884 Only) REGISTER ADDRESS 18h 19h 1Ah 1Bh 1Ch 1Dh 1Eh 1Fh 20h 21h 22h 23h 24h 25h 26h 27h 14 ______________________________________________________________________________________ BIT RANGE [7:0] ADC IN1 Conversion Result (8 MSBs) ...
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Power-Supply Supervisory Circuits Table 4. IN1–IN6 Threshold Register Settings REGISTER EEPROM MEMORY ADDRESS ADDRESS 00h 80h 01h 81h 02h 82h 03h 83h 04h 84h 05h 85h 06h 86h 07h 87h 08h 88h 09h 89h 0Ah 8Ah 0Bh 8Bh 0Eh 8Eh ...
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EEPROM-Programmable, Hex Power-Supply Supervisory Circuits External Voltage-Divider To achieve thresholds from 0.1667V to 1.0167V in 3.3mV increments, program the respective input voltage detector for high impedance and use an external volt- age-divider (see Figure 2). Set voltage-detector inputs for high ...
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Power-Supply Supervisory Circuits Programmable Outputs The MAX6884/MAX6885 feature three programmable active-low outputs: RESET, UV/OV, and WDO. Program each output for open-drain or weak pullup. An internal 10kΩ resistor connected from each output to a 2.55V internal LDO provides a weak ...
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EEPROM-Programmable, Hex Power-Supply Supervisory Circuits 6. Programmable RESET Options Table EEPROM REGISTER MEMORY BIT RANGE ADDRESS ADDRESS 11h 91h 12h 92h 18 ______________________________________________________________________________________ 1 = RESET Assertion Depends RESET Assertion Does Not Depend on MR ...
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Power-Supply Supervisory Circuits Program UV/OV to depend on MR, RESET, or any pro- grammable secondary voltage detector input (see Table 7 example, UV/OV may depend on the IN1 sec- ondary overvoltage threshold, MR, and RESET. Write 1’s to ...
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EEPROM-Programmable, Hex Power-Supply Supervisory Circuits The MAX6884/MAX6885 offer a separate output for the watchdog timer system. WDO is active low and program- mable for open-drain or weak pullup. Program WDO to assert RESET when the watchdog timer expires. See the ...
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Power-Supply Supervisory Circuits The normal watchdog timeout period (t after the initial watchdog timer and continues to be active until the watchdog timer expires. The normal watchdog timeout period monitors a pulsed output of the µP that indicates when normal ...
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EEPROM-Programmable, Hex Power-Supply Supervisory Circuits Table 9. Fault Registers (28h–2Ah) REGISTER BIT RANGE ADDRESS [ IN1 Voltage Falls Below Primary Undervoltage Threshold [ IN2 Voltage Falls Below Primary Undervoltage Threshold [ IN3 Voltage Falls ...
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Power-Supply Supervisory Circuits Table 11. User EEPROM Write Disable Bits EEPROM REGISTER MEMORY ADDRESS ADDRESS 16h 96h Configuration Register Bank The configuration registers can be directly modified by the serial interface without modifying the EEPROM after the power-up procedure terminates ...
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EEPROM-Programmable, Hex Power-Supply Supervisory Circuits Table 12. Register Map EEPROM REGISTER MEMORY ADDRESS ADDRESS 00h 80h 01h 81h 02h 82h 03h 83h 04h 84h 05h 85h 06h 86h 07h 87h 08h 88h 09h 89h 0Ah 8Ah 0Bh 8Bh 0Ch 8Ch ...
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Power-Supply Supervisory Circuits Table 12. Register Map (continued) EEPROM REGISTER MEMORY ADDRESS ADDRESS 25h — 26h — 27h — 28h — 29h — 2Ah — CONFIGURATION REGISTER BANK EEPROM 00h 80h CONFIGURATION DATA (R/W) 17h 97h 18h ADC AND FAULT ...
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EEPROM-Programmable, Hex Power-Supply Supervisory Circuits 2 SMBus/I C-Compatible Serial Interface The MAX6884/MAX6885 feature an I ble 2-wire serial interface consisting of a serial data line (SDA) and a serial clock line (SCL). SDA and SCL facili- tate bidirectional communication between ...
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Power-Supply Supervisory Circuits Start and Stop Conditions Both SCL and SDA idle high when the bus is not busy. A master device signals the beginning of a transmission with a START (S) condition (see Figure SDA from high to low ...
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EEPROM-Programmable, Hex Power-Supply Supervisory Circuits SA7 through SA4 represent the standard 2-wire inter- face address (1010); for devices with EEPROM, SA2 corresponds to the A0 address inputs of the MAX6884/ MAX6885 (hardwired as logic-low or logic-high). SA0 is a read/write ...
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Power-Supply Supervisory Circuits The read byte protocol allows the master device to read the register or an EEPROM location (user or con- figuration) content of the MAX6884/MAX6885 (see Figure 11). The read byte procedure follows: 1) The master sends a ...
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EEPROM-Programmable, Hex Power-Supply Supervisory Circuits Note that once the read has been done, the internal point increased by one, unless a memory boundary is hit. If the device is busy or if the address is not an allowed ...
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Power-Supply Supervisory Circuits Layout and Bypassing For better noise immunity, bypass each of the voltage- detector inputs to GND with a 0.1µF capacitor installed as close to the device as possible. Bypass V DBP to GND with 1µF capacitors installed ...
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EEPROM-Programmable, Hex Power-Supply Supervisory Circuits TOP VIEW RESET 1 WDO 2 UV/OV 3 MAX6884 GND 4 *EXPOSED PAD WDI THIN QFN *EXPOSED PAD CONNECTED TO GND. 32 ______________________________________________________________________________________ RESET IN6 ...
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Power-Supply Supervisory Circuits (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) D D/2 MARKING XXXXX PIN # 1 I.D. C -DRAWING NOT TO SCALE- ______________________________________________________________________________________ ...
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EEPROM-Programmable, Hex Power-Supply Supervisory Circuits (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) COMMON DIMENSIONS PKG. 16L 5x5 20L 5x5 SYMBOL MIN. NOM. MAX. MIN. ...