MB3793-45 Fujitsu Media Devices, MB3793-45 Datasheet
MB3793-45
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MB3793-45 Summary of contents
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... There is also a mask option that can detect voltages of 4 0.1-V steps. The model number is MB3793-45 corresponding to the detected voltage. The model number and package code are as shown below. Model No. ...
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... MB3793-45 PIN ASSIGNMENT PIN DESCRIPTION Pin no. Symbol 1 RESET Outputs reset pin Watchdog timer monitor time 2 CTW setting pin Power-on reset hold time 3 CTP setting pin 4 GND Ground pin DataSheet4U.com 2 4 DataSheet U .com (Top view RESET 2 7 CTW 3 6 CTP ...
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... INH 6 CTW 2 Pulse generator 1 CK1 8 Pulse generator 2 7 CK2 DataSheet4U.com 4 DataSheet U .com of all blocks Reference Watchdog DataSheet4U.com voltage timer generator V MB3793- 650 k Logic circuit Comp 1. REF . 240 k To GND of all blocks GND 3 ...
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... MB3793-45 BLOCK DESCRIPTION 1. Comp. S Comp comparator with hysteresis to compare the reference voltage with a voltage (V of dividing the power voltage (V This function enables the MB3793 to detect an abnormality within 1 s when the power is cut or falls abruptly. 2. Output circuit The output circuit contains a RESET output control comparator that compares the voltage at the CTP pin to the threshold voltage to release the RESET output if the CTP pin voltage exceeds the threshold value ...
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... RESET — + Tstg — Symbol Conditions DataSheet4U.com V — — — — — MB3793-45 (Ta = +25 C) Rating Unit Min. Max. –0 –0 –10 +10 mA — 200 mW –55 +125 C Value Unit Min. Typ. Max. 1.2 — 6.0 – ...
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... MB3793-45 ELECTRICAL CHARACTERISTICS 1. DC Characteristics Parameter Power supply current Detection voltage Detection voltage hysteresis difference Clock-input threshold voltage Clock-input hysteresis Inhibition-input voltage Input current (CK1, CK2, INH) Reset output voltage Reset-output minimum power voltage *: The values enclosed in parentheses () are setting assurance values. ...
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... DIAGRAM 1. Basic operation (Positive clock pulse CK1 CK2 INH V th CTP V H CTW V L RESET DataSheet4U.com 4 DataSheet U .com t CKW t CKT DataSheet4U.com (1) (2) (3) (4)(5) (5) (6) (7) MB3793- (8) (9) (10) (11) (12) (13) 7 ...
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... MB3793-45 2. Basic operation (Negative clock pulse CK1 CK2 INH V th CTP V H CTW V L RESET (1) (2) DataSheet4U.com 8 4 DataSheet U .com t CKW t CKT DataSheet4U.com (3) (4)(5) (5) (6) (7) (8) ( (10) (11) (12) (13) ...
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... Note: The MB3793 can monitor only one clock. The MB3793 checks the clock signal at every other input pulse. Therefore, set watchdog timer monitor time t the period twice as long as the input clock pulse. DataSheet4U.com 4 DataSheet U .com t CKW t CKT DataSheet4U.com to the time that allows the MB3793 to monitor WD MB3793-45 9 ...
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... MB3793-45 4. Inhibition operation (Positive clock pulse CK1 CK2 INH V th CTP V H CTW V L RESET DataSheet4U.com 10 4 DataSheet U .com t CKW DataSheet4U.com (1) (2) (3) (4)(5) (5) (6) (7) (11) (8) ( (10) (12) (13) ...
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... DataSheet U .com *1 *2 DataSheet4U.com ) reaches about 0 the MB3793 starts charging the power-on re this time, the output remains in a reset state. The V TP (until the CTP pin voltage exceeds the thresh- PR MB3793-45 ) CCL value is about SH 11 ...
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... MB3793-45 The V value is about 3.6 V with V th The power-on reset hold timer monitor time (ms The value about 1300 with V time setting capacitor (C (4) When the voltage at the watchdog timer monitor time setting pin the C switches from the charge state to the discharge state. ...
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... CTP CK1 INH GND CK2 7 4 DataSheet4U.com INH RESET CTW CK1 8 GND 3 CTP CK2 7 4 MB3793-45 RESET V CC Microprocessor CK GND RESET V RESET Microprocessor 1 Microprocessor 2 CK HALT CK HALT GND GND 13 ...
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... MB3793-45 TYPICAL APPLICATION GND *: Use a capacitor with less leakage current. 1. Equation of time-setting capacitances ( Values and D 2. (Example) when C DataSheet4U.com 14 4 DataSheet U .com CTW RESET 1 MB3793 3 8 CTP CK1 6 7 INH ...
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... ORDERING INFORMATION Part number MB3793-45PF MB3793-45PNF DataSheet4U.com 4 DataSheet U .com Package 8-pin Plastic SOP (FPT-8P-M01) 8-pin Plastic SOL (FPT-8P-M02) DataSheet4U.com MB3793-45 Remarks 15 ...
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... MB3793-45 PACKAGE DIMENSIONS 8-pin plastic SOP (FPT-8P-M01) 6.35 1.27(.050) TYP 3.81(.150)REF 2000 FUJITSU LIMITED F08002S-4C-5 C DataSheet4U.com 16 4 DataSheet U .com +0.25 +.010 .250 –0.20 –.008 5.30±0.30 7.80±0.40 INDEX (.209±.012) (.307±.016) 0.45±0.10 Ø0.13(.005) M (.018±.004) DataSheet4U.com " ...
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... M (.017±.004) DataSheet4U.com 0.10(.004) MB3793-45 1.55±0.20(.061±.008) (Mounting height) 0.15±0.10 (STAND OFF) (.006±.004) 5.00±0.30 (.197±.012) 45° 0.40(.016) 0.20±0.05 0.50±.020 (.008± ...
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... MB3793-45 FUJITSU LIMITED For further information please contact: Japan FUJITSU LIMITED Corporate Global Business Support Division Electronic Devices KAWASAKI PLANT, 4-1-1, Kamikodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa 211-8588, Japan Tel: +81-44-754-3763 Fax: +81-44-754-3329 http://www.fujitsu.co.jp/ North and South America FUJITSU MICROELECTRONICS, INC. 3545 North First Street, San Jose, CA 95134-1804, U ...