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| EM MICROELECTRONIC-MARIN SA H6052 3-Pin Voltage Surveillance with Time-out Features n n n n n n n n n Proper microprocessor restart after power up Processor reset at power down On-chip oscillator gives a typical POR of 160 ms Reset output working down to 1.6 V No external components required Very small mounting space TO-92 package SOT-223 package Sensitivity typically 10 s Typical Operating Configuration Description The H6052 is a CMOS device whichmonitors the supply voltage and controls the reset of the microprocessor. Upon the supply voltage rising above VTH ON, the reset output, whether RES or RES, will remain active (RES = 1, RES = 0) for an additional 160 ms. This allows the system voltage and the oscillator of the microprocessor system to stabilize before the system becomes fully active. When VDD drops below VTH OFF, the reset output goes active (RES = 1, RES = 0). Applications All microprocessor and microcontroller applications where an automatic restart of the micreoprocessor after power down is required: n n n n White goods Brown goods Automotive electronics Industrial electronics 1 H6052 Absolute Maximum Ratings Handling Procedures This device has built-in protection against high static voltages or electric fields; however, anti-static precautions precautions be taken as for any other CMOS component. Unless otherwise specified, proper operation can only occur when all terminal voltages are kept within the supply voltage range. Unused inputs must always be tied to a defined logic voltage level. Table 1 Stresses above these listed maximum ratings may cause permanent damage to the device. Exposure beyond specified operating conditions may affect device reliability or cause malfunction. Operating Conditions Parameter Operating temperature Positive supply voltage Symbol Min. Typ. Max. Units TA VDD -40 1.6 +85 5.5 O C V Table 2 Electrical Characteristics VDD = 5.0 V 10%, TA = -40 to +85OC, unless otherwise specified Parameter Supply current Supply voltage: Power on threshold* Power off threshold* RES Output High Level RES Output Low Level RES Output Low Level RES Output Low Level RES Output High Level RES Output High Level Symbol IDD VTH ON VTH OFF VOH VOL VOL VOL VOH VOH Test Conditions RES or RES open TA = +25OC TA = +25OC IOH = 2 mA VDD = 3.5 V, IOL = 2mA VDD = 1.6 V, IOL = 400 A IOL = 4 mA VDD = 3.5 V, IOH = 1.5 mA VDD = 1.6 V, IOH = 80 A Min. Typ. 80 Max. 140 4.4 3.6* Units A V V V V V V V V Table 3 3.6 2.8* VDD - 0.4 4 3.2* 0.4 0.4 0.4 VDD - 0.4 VDD - 0.4 * VTH ON is related to VTH OFF. Typically, VTH OFF = VTH ON - 0.8 V Timing Characteristics VDD = 5.0 V 10%, TA = -40 to +85OC, unless otherwise specified Parameter Power on reset Power on reset Symbol tPOR tPOR Test Conditions TA = +25OC Min. 100 Typ. 160 Max. 350 250 Units ms ms Table 4 2 H6052 Timing Waveforms VDD VTH ON VTH OFF 1.6 V tPOR Logic "1" Logic "0" Logic "1" Logic "0" t t RES Fig.3 tPOR t RES Block Diagram VDD Bandgap Ref. Comparator RES or RES Reset Control OSC Vss Timer Fig.4 Pin Description TO-92 SOT-223 Table 6 3 H6052 Typical Applications Power On Reset VDD VDD VDD RES VDD RES RES RES H6052 1 VSS P H6052 2 VSS P GND GND Fig. 5 Ordering Information Part number: H6052 1 H6052 1 H6052 2 H6052 2 The H6052 is available in the following pacakges: Package; TO-92 SOT-223 TO-92 SOT-223 Reset Output Reset Output Reset Output Reset Output When ordering please specify complete part number and package. EM Microelectronic-Marin SA cannot assume responsibility for use of any circuitry described other than circuitry entirely embodied in an EM Microelectronic-Marin SA product. EM Microelectronic-Marin SA reserves the right to change the circuitry and specifications without notice at any time. You are strongly urged to ensure that the information given has not been superseded by a more up-to-date (c) 2000 EM Microelectronic-Marin SA,10/00, Rev. H/328 4 |
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