SP706RCP Sipex Corporation, SP706RCP Datasheet

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SP706RCP

Manufacturer Part Number
SP706RCP
Description
+3.0V/+3.3V low power microprocessor supervisory circuits
Manufacturer
Sipex Corporation
Datasheet
1.SP706RCP.pdf (18 pages)
DESCRIPTION
The SP706P/S/R/T, SP708R/S/T series is a family of microprocessor ( P) supervisory circuits
that integrate myriad components involved in discrete solutions which monitor power-supply and
battery, in P, and digital systems. The SP706P/S/R/T, SP708R/S/T series will significantly
improve system reliability and operational efficiency when compared to results obtained with
discrete components. The features of the SP706P/S/R/T, SP708R/S/T series include a
watchdog timer, a P reset, a Power Fail Comparator, and a manual-reset input. The SP706P/
S/R/T, SP708R/S/T series is ideal for +3.0V or +3.3V applications in automotive systems,
computers, controllers, and intelligent instruments. The SP706P/S/R/T, SP708R/S/T series is
an ideal solution for systems in which critical monitoring of the power supply to the P and related
digital components is demanded.
Rev. 10-17-00
P
Precision Low Voltage Monitor:
RESET Pulse Width - 200ms
Independent Watchdog Timer - 1.6 sec
Timeout (SP706P/S/R/T)
40 A Maximum Supply Current
Debounced TTL/CMOS Manual-Reset Input
RESET Asserted Down to V
RESET Output:
WDI Can Be Left Floating, Disabling the
Watchdog Function
SP706P/R and SP708R at +2.63V
SP706S and SP708S at +2.93V
SP706T and SP708T at +3.08V
SP706P Active-High
SP706R/S/T Active-Low
SP708R/S/T Both Active High + Active Low
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Pin Compatible Enhancement to Industry
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SP706RCP Summary of contents

Page 1

... SP706 +3.0/ +3.3 Low Power Microprocessor Circuits 1 Glitch Immunity © Copyright 2000 Sipex Corporation t u ...

Page 2

... < V < < V < © Copyright 2000 Sipex Corporation ...

Page 3

... < V < < V < < V < © Copyright 2000 Sipex Corporation ...

Page 4

... Figure 1. Pinouts Rev. 10-17-00 RESET / RESET* RESET RESET *SP706P only SP706 +3.0/ +3.3 Low Power Microprocessor Circuits 4 SOIC WDI WDO 2 7 PFO SP706P/R/S PFI GND N. PFO SP708S/R PFI GND CC *SP706P only © Copyright 2000 Sipex Corporation ...

Page 5

... µ µ µ © Copyright 2000 Sipex Corporation ...

Page 6

... SP706P/R/S/T GND 250 A RESET GENERATOR 2.63V for the SP708R 2.93V for the SP708S 3.08V for the SP708T 1.25V SP708R/S/T GND SP706 +3.0/ +3.3 Low Power Microprocessor Circuits 6 WDO RESET/RESET* PFO * For the SP706P only RESET RESET PFO © Copyright 2000 Sipex Corporation ...

Page 7

... Assertion Response Time RESET GND Figure 6B. Circuit for the SP706 RESET Output Voltage vs. Supply Voltage. SP706 +3.0/ +3.3 Low Power Microprocessor Circuits 7 +3. +3. + PFO 1K 30pF +3.3V 1K PFI PFO 30pF + RESET RESET 330pF © Copyright 2000 Sipex Corporation ...

Page 8

... Figure 7B. Circuit for the SP706 RESET Response Time 3.2V 2.8V RESET RESET 0V 0V Figure 9. SP708 RESET and RESET De-Assertion + 10K RESET 330pF RESET 330pF 10K GND SP706 +3.0/ +3.3 Low Power Microprocessor Circuits + 10K RESET RESET 330pF RESET 0V 2.8V RESET © Copyright 2000 Sipex Corporation ...

Page 9

... Figure 11. SP708 RESET Output Voltage vs. Supply Voltage V Figure 13. Circuit for the SP708 RESET Output Voltage vs. Supply Voltage and the RESET Response Time Figures Rev. 10-17-00 3. RESET 0V Figure 12. SP708 RESET Response Time RESET 330pF GND SP706 +3.0/ +3.3 Low Power Microprocessor Circuits 9 10K © Copyright 2000 Sipex Corporation ...

Page 10

... Power-Fail Comparator The power-fail comparator can be used for various purposes because its output and noninverting input are not internally connected. The inverting input is internally connected to rises above CC a 1.25V reference. SP706 +3.0/ +3.3 Low Power Microprocessor Circuits 10 down to 1.1V. CC © Copyright 2000 Sipex Corporation ...

Page 11

... CMOS logic compatible can be driven by an external logic line. MR can be used to force a watchdog timeout to generate a RESET pulse in the SP706P/R/S/T-SP708R/S/T series. Simply connect WDO to MR *externally driven LOW SP706 +3.0/ +3.3 Low Power Microprocessor Circuits © Copyright 2000 Sipex Corporation ...

Page 12

... RESET output. If, for example, the RESET Unregulated DC Power Supply PFI GND Figure 17. Monitoring Both +3.3V/+3.0V and +12V Power Supplies SP706 +3.0/ +3.3 Low Power Microprocessor Circuits 12 line, and the resis- CC +3.3V/+3.0V +12V PFI PFO 130K 1% RESET GND © Copyright 2000 Sipex Corporation ...

Page 13

... Buffered RESET connects to System Components R 2 +3.3V/+3. GND V- Figure 19. Interfacing to Microprocessors with Bidirectional RESET I/O for the SP706 SP706 +3.0/ +3.3 Low Power Microprocessor Circuits 13 transient may CC transient that goes CC pin provides additional transient +3.3V/+3. RESET RESET 4.7K GND © Copyright 2000 Sipex Corporation ...

Page 14

... Causing a Reset Pulse vs. Reset Comparator Overdrive 2.5 3 3.5 4 4.5 Supply Voltage (V) Figure 22. Supply Current vs. Supply Voltage Rev. 10-17-00 20.2 20.1 20.0 19.9 19.8 19.7 19.6 19.5 10000 19.4 -60 Figure 21. Supply Current vs. Temperature 5 5.5 SP706 +3.0/ +3.3 Low Power Microprocessor Circuits 14 Vcc=3.3V -40 - 100 Temperature (°C) © Copyright 2000 Sipex Corporation ...

Page 15

... C 0.008/0.014 (0.203/0.356) D 0.355/0.400 (9.017/10.160) E 0.300/0.325 (7.620/8.255) 0.240/0.280 E1 (6.096/7.112) 0.115/0.150 L (2.921/3.810 Ø (0 /15 ) SP706 +3.0/ +3.3 Low Power Microprocessor Circuits 15 C Ø 0.300 BSC A (7.620 BSC) © Copyright 2000 Sipex Corporation ...

Page 16

... B 0.014/0.019 (0.35/0.49) D 0.189/0.197 (4.80/5.00) E 0.150/0.157 (3.802/3.988) e 0.050 BSC (1.270 BSC) H 0.228/0.244 (5.801/6.198) h 0.010/0.020 (0.254/0.498) L 0.016/0.050 (0.406/1.270) Ø SP706 +3.0/ +3.3 Low Power Microprocessor Circuits 16 Ø L © Copyright 2000 Sipex Corporation ...

Page 17

... All package dimensions are in inches SP706 +3.0/ +3.3 Low Power Microprocessor Circuits 17 0.008 0˚ - 6˚ 0.006 0.006 0.006 0.006 3.0˚ 0.0215 3˚ 0.006 0.037 Ref 0.116 0.004 0.118 0.004 © Copyright 2000 Sipex Corporation ...

Page 18

... Model ....................................................................................... Temperature Range ................................................................................ Package SP706PCP ..................................................................................... +70 C ................................................................................... 8–pin PDIP SP706PCN ..................................................................................... +70 C ................................................................................ 8–pin NSOIC SP706PCU ..................................................................................... +70 C ................................................................................. 8-pin SOIC SP706RCP ..................................................................................... +70 C ................................................................................... 8–pin PDIP SP706RCN ..................................................................................... +70 C ................................................................................ 8–pin NSOIC SP706RCU ..................................................................................... +70 C ................................................................................. 8-pin SOIC SP706SCP ..................................................................................... +70 C ................................................................................... 8–pin PDIP SP706SCN ..................................................................................... +70 C ................................................................................ 8– ...

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