SP706TEU-L Exar Corporation, SP706TEU-L Datasheet
SP706TEU-L
Specifications of SP706TEU-L
Related parts for SP706TEU-L
SP706TEU-L Summary of contents
Page 1
... LOW and HIGH SP813L 4.65 V June 2008 Rev C = 1.1V CC Now available in Lead Free RESET Manual Active RESET LOW YES LOW YES YES YES HIGH YES SP705 Low Power Microprocessor Supervisory Circuits 1 SP705-708/813L PFI Watchdog Accuracy YES 4% YES YES 4% © 2008 Exar Corporation ...
Page 2
... Mini SO (derate 4.10mW/ C above +70 C) 330mW Storage Temperature Range ....... - +160 C Lead Temperature (soldering, 10s) ............ +300 C -0.3V to +6.0V 20mA = 4.50V to 5.50V for SP706/708 MIN 5 SP705 Low Power Microprocessor Supervisory Circuits unless otherwise noted, typical MAX SP706, SP708, Note Vcc = 1.1V, I SINK © 2008 Exar Corporation ...
Page 3
... CC A MIN RESET / RESET* WDO RESET RESET SP705 Low Power Microprocessor Supervisory Circuits unless otherwise noted, typical at 25 MAX SOIC WDI 2 7 PFO SP705 3 6 SP706 MR PFI SP813L GND N. PFO SP707 SP708 PFI GND CC * SP813L only © 2008 Exar Corporation o C. ...
Page 4
... Table 1. Device Pin Description June 2008 Rev SP705 Low Power Microprocessor Supervisory Circuits µ µ µ © 2008 Exar Corporation C I ...
Page 5
... SP706 and SP813M) SP705 1.25V SP706 SP813L GND * For the SP813L only 250 A RESET GENERATOR 4.65V (4.40V for the SP708) 1.25V SP707 SP708 GND SP705 Low Power Microprocessor Supervisory Circuits 5 WDO RESET/RESET* PFO RESET RESET PFO © 2008 Exar Corporation ...
Page 6
... C A +1.25V Figure 5B. Circuit for the Power-Fail Comparator Assertion Response Time GND Figure 6B. Circuit for the SP705/707 RESET Output Voltage vs. Supply Voltage. SP705 Low Power Microprocessor Supervisory Circuits + + PFO 1K 30pF +5V 1K PFI PFO 30pF RESET RESET 330pF © 2008 Exar Corporation ...
Page 7
... Figure 10. Circuit for the SP707 RESET and RESET Assertion and De-Assertion June 2008 Rev GND Figure 7B. Circuit for the SP705/707 RESET Response Time Figure 9. SP707 RESET and RESET De-Assertion + 10K RESET 330pF RESET 330pF 10K GND SP705 Low Power Microprocessor Supervisory Circuits + 10K RESET RESET 330pF © 2008 Exar Corporation ...
Page 8
... Voltage vs. Supply Voltage V CC GND Figure 13. Circuit for the SP707/708/813L RESET Output Voltage vs. Supply Voltage and the SP813L RESET Response Time June 2008 Rev C Figure 12. SP813L RESET Response Time V CC RESET 330pF SP705 Low Power Microprocessor Supervisory Circuits 8 10K © 2008 Exar Corporation ...
Page 9
... WDI is driven HIGH or LOW, the timer will start counting. Pulses as short as 50ns can be detected. SP705 Low Power Microprocessor Supervisory Circuits 9 P reaches 1.1V, RESET CC rises CC dips below the reset thresh- CC falls below the reset threshold, CC drops below 1.1V. CC © 2008 Exar Corporation CC ...
Page 10
... If WDI is left unconnected, WDO can be used as a low-line output. Since floating WDI disables the internal timer, WDO goes LOW only when V falls below the reset threshold, thus func- CC tioning as a low-line output *externally driven LOW SP705 Low Power Microprocessor Supervisory Circuits © 2008 Exar Corporation ...
Page 11
... PFI and PFO. A capacitor between PFI and GND will reduce the power-fail circuit's Unregulated DC Power Supply PFI GND Figure 17. Monitoring Both +5V and +12V Power Supplies SP705 Low Power Microprocessor Supervisory Circuits 11 +5V +12V PFI PFO 130K 1% RESET GND © 2008 Exar Corporation ...
Page 12
... P reset I/O, as shown if Figure 19. Buffer the RESET output to other system components Buffered RESET connects to System Components PFI GND V- Figure 19. Interfacing to Microprocessors with Bidirectional RESET I/O for the SP705/706/707/708 SP705 Low Power Microprocessor Supervisory Circuits 12 + RESET RESET 4.7K GND © 2008 Exar Corporation ...
Page 13
... DS1232 that is useful for monitoring systems with unregulated supply voltages. The SP705-708/ 813L series is available in one of the industry's smallest space-saving package sizes, the SOIC. SP705 Low Power Microprocessor Supervisory Circuits 13 -40C 25C +85C 5.0V 5. © 2008 Exar Corporation ...
Page 14
... Table 2. Device Overview on Dallas Semiconductor June 2008 Rev SP705 Low Power Microprocessor Supervisory Circuits µ © 2008 Exar Corporation ...
Page 15
... June 2008 Rev C SP705 Low Power Microprocessor Supervisory Circuits 15 © 2008 Exar Corporation ...
Page 16
... June 2008 Rev C SP705 Low Power Microprocessor Supervisory Circuits 16 © 2008 Exar Corporation ...
Page 17
... June 2008 Rev C SP705 Low Power Microprocessor Supervisory Circuits 17 © 2008 Exar Corporation ...
Page 18
... EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized ...