STM6905PWBDS6E STMICROELECTRONICS [STMicroelectronics], STM6905PWBDS6E Datasheet
STM6905PWBDS6E
Related parts for STM6905PWBDS6E
STM6905PWBDS6E Summary of contents
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Features ■ Quintuple voltage monitoring ■ Accurate ±1.8% across temperature voltage threshold (±1% at 25°C) ■ Primary supply (V ) monitor. Fixed (factory - CC programmed) reset thresholds: 3.078 V to 2.866 V ■ Second fixed (V2IN) monitor. Fixed (factory- ...
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Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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List of figures Figure 1. Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Description The STM6905 supervisor is a low voltage/low supply current processor supervisor, designed to monitor up to five system power supply voltages. This device is targeted at applications such as set-top boxes (STBs), portable, battery-powered systems, networking and communication ...
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Table 2. Signal names and functions Pin Name V2IN V3IN 6 V4IN 7 V5IN 8 RST 6/19 Type Input Active-low manual reset input with internal pull-up resistor Primary supply voltage ...
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Pin descriptions 2.1 Push-button reset input (MR) When MR goes low the RST output is driven low, RST remains low as long low and for t after MR returns to high. The active-low input has an ...
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Figure 3. Functional block diagram V CC V2IN V3IN V4IN V5IN Internal pull- input of 10k ohm (typ). Figure 4. Typical hardware hookup application diagram (600mV) ...
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Operation The STM6905 provides the ability to monitor critical voltages such as power-supply and battery voltage levels, while interfacing easily to the system controllers/microprocessors. Figure 4 shows typical hardware hookup for monitoring five voltages; two fixed thresholds (customer-selectable, factory-programmed ...
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Voltage monitoring Figure 5. MR timing waveforms t MLMH MR t MLMR RST Figure 6. Voltage monitoring diagram V VXIN RST1/2 V RSTIN RST 10/19 t REC , t RD ai13974 t rec ai13975 ...
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Maximum rating Stressing the device above the rating listed in the "Absolute maximum ratings" table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above ...
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DC and AC parameters This section summarizes the operating measurement conditions and the DC and AC characteristics of the device. Designers should check that the operating conditions in their circuit match the operating conditions when relying on the quoted ...
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Table 4. DC and AC characteristics (continued) Alter- Sym Description native Reset threshold V HYST hysteresis RST delay RST time-out period REC RP Adjustable reset comparator input (V3IN, V4IN, V5IN) V3IN, V4IN, V5IN ...
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Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner ...
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Table 5. TSSOP 8-lead package mechanical data mm Symbol Min Typ A A1 0.00 A2 0.75 0.85 b 0.22 c 0.08 ccc D 2.80 3.00 e 0.65 E 4.65 4.90 E1 2.80 3.00 L 0.40 0.60 L1 0.95 L2 0.25 ...
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Part numbering Table 6. Ordering information scheme Example: Device type STM6905 Reset threshold voltages Suffix V V RST1 TZ 3.078 2.333 TW 3.078 1.683 TG 3.078 1.110 SY 2.955 1.050 SF 2.955 1.050 PW 2.866 1.683 t REC (1) ...
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Package marking information Table 7. Marking description Part marking V RST1 STM6905TZEDS6F 3.078 STM6905TWEDS6F 3.078 STM6905TGEDS6F 3.078 STM6905SYEDS6F 2.955 STM6905SFEDS6F 2.955 STM6905PWEDS6F 2.866 (V) V (V) RST2 2.333 MSOP (TSSOP8) 1.683 MSOP (TSSOP8) 1.110 MSOP (TSSOP8) 2.188 MSOP (TSSOP8) ...
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Revision history Table 8. Document revision history Date Revision 19-Dec-2007 23-Jan-2008 28-Jan-2008 18/19 1 Initial release. 2 Document status upgraded to full datasheet. 3 Updated cover page, Figure Changes 6, and Table 4. ...
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Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any ...