STM6905 STMicroelectronics, STM6905 Datasheet
STM6905
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STM6905 Summary of contents
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... Operating temperature: –40°C to 85°C (industrial grade) Table 1. Device summary Order code V RST1 STM6905TZEDS6F STM6905TWEDS6F STM6905TGEDS6F STM6905SYEDS6F STM6905SFEDS6F STM6905PWEDS6F 1. Other reset threshold voltages and t ST sales office for availability. January 2008 Quintuple, ultralow voltage supervisor ≥ 0.8 V Applications ■ Set-top boxes ■ Multi-voltage systems ■ ...
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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 systems. The device supports a push-button type manual reset input (MR). Two of the five supply ...
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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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... TRIP R6 V CC3 R1 R2 8/19 V RST1 COMPARE COMPARE V RST2 V REF = 0.6V COMPARE V REF = 0.6V COMPARE V REF = 0.6V COMPARE From DC/DC Converter V CC2 V CC1 V CC 0.1 F STM6905 VIN2 0.1 F VIN3 V CC4 R3 VIN4 V CC5 R4 R5 VIN5 rec RST Generator ai13970 RST RST (To Processor Reset) MR Push-button Switch ai13973 ...
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... V2IN, V3IN, V4IN and V5IN). 3.2 Power on reset (t On power up, the STM6905 activates a power on reset circuit which asserts the reset pin (i.e. RST goes low). The RST signal remains active until V and MR) rises above the minimum voltage level for the time period t that the supply voltage has stabilized to sufficient operating levels. ...
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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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... These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents. Table 3. ...
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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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... Shipping method ® ECOPACK package, tubes ® ECOPACK package, tape & reel 1. Other reset threshold voltages and t apply. Contact local sales office for availability. 16/19 STM6905 (1) RST2 time-out periods are offered. Minimum order quantities may REC ...
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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) 1.050 MSOP (TSSOP8) 1.683 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 time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...