DS1706 Dallas, DS1706 Datasheet
DS1706
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DS1706 Summary of contents
Page 1
... DIP and 8–pin SOIC 8–pin DIP, 8–pin SOIC and 8–pin –SOP packages Industrial temperature range – +85 C DESCRIPTION The DS1705/DS1706 3.3 or 5.0 Volt MicroMonitor moni- tors three vital conditions for a microprocessor: power supply, software execution, and external override. A precision temperature compensated reference and ...
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... TP ues for R1 and R2 can be determined by the equation as shown in Figure 5. Proper operation of the 011296 2/10 DS1705/DS1706 requires that the voltage at the IN pin The DS1705/DS1706 be limited to V voltage at the supply being monitored (V be derived as shown in Figure 5. A simple approach to solving the equation is to select a value for R2 high ...
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... UPSTREAM SUPPLY VOLTAGE DIGITAL SAMPLER DIGITAL SAMPLER LEVEL SENSE AND DEBOUNCE WDS V RST CC DS1706P ST GND IN NMI PBRST V CC DS1706 GND IN DIGITAL DELAY WATCHDOG STATUS LATCH 8051 P RST ALE WDS RST RST ST ALE NMI DS1705/DS1706 NMI RST DS1706_/A/R/S/T RST DS1706L/DS1706P WDS P 011296 3/10 ...
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... SENSE SENSE Example: V SENSE V = 3.3 volts CC 10K = R2 4.50 Therefore: x 3.3 1.25 R1 4.5 011296 4/10 t PDLY PBRST WDS V RST CC DS1706 ST GND NMI 1.25 V MAX R2 = 4.50 volts at the trip point 12.4 volts maximum 10K x 1.25 R1 10K RST SENSE 26K ...
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... BY PUSHBUTTON RST TIMING DIAGRAM: NON–MASKABLE INTERRUPT Figure 8 V > 1.25V IN V TP(MAX) NMI WDS RST DS1706 ST NMI VALID STROBE TP(MIN) t IPD V OL Z80 P RST MREQ DECODER ADDRESS BUS INDETERMINATE STROBE MIN. MAX. V TP(MAX TP(MIN) t IPD V OH DS1705/DS1706 011296 5/10 ...
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... DS1705/DS1706 TIMING DIAGRAM: POWER DOWN Figure RST (DS1705 AND DS1706_/R/S/T) RST (DS1706L AND DS1706P ONLY) WDS WDS SLEWS WITH V 011296 6/ CCTP(MAX) V CCTP V CCTP(MIN) t RPD RST SLEWS WITH V CC ...
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... TIMING DIAGRAM: POWER UP Figure WDS V CCTP(MAX) V CCTP CCTP(MIN) t RPU RST RST RST (DS1705 AND DS1706_/R/S/ RST OL (DS1706L AND DS1706P ONLY) DS1705/DS1706 011296 7/10 ...
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... PARAMETER V Trip Point DS1705/DS1706L CC V Trip Point DS1706 CC V Trip Point DS1706T CC V Trip Point DS1706S CC V Trip Point DS1706P Input Leakage Output Current @ 2.4 volts Output Current @ 0.4 volts Output Voltage @ –500 A Operating Current @ V < 5.5 volts CC Operating Current @ V < 3.6 volts CC IN Input Trip Point ...
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... RPU PDLY t 1.0 1 IPD with an internal impedance of 40K typical and the ST input is internally CC or ground. CC minimum will not cause a reset. CCTP DS1705/DS1706 (– + =1.2V to 5.5V) CC MAX UNITS NOTES ns 285 285 ms ns 250 ns 2 ...
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... and D represents the device type and tolerance. ABCD 705_ – DS1705 706_ – DS1706 706L – DS1706L 706P – DS1706P 706R – DS1706R 706S – DS1706S 706T – DS1706T WWY represents the device manufacturing Work Week, Year. 011296 10/ ABCD WWY (118 MIL) ...