MB3793-37A Fujitsu Microelectronics, Inc., MB3793-37A Datasheet
MB3793-37A
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MB3793-37A 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 MB3793-37A corresponding to the detected voltage. The model number and package code are as shown below. Model No. ...
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... MB3793 -37A PIN ASSIGNMENT PIN DESCRIPTION Pin no. Symbol Descriptions 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 2 (Top view RESET 2 7 CTW 3 6 CTP GND 4 5 (FPT-8P-M01) (FPT-8P-M02) Pin no ...
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... CTP 3 1 RESET Output circuit INH 6 CTW 2 Watchdog timer Pulse generator 1 CK1 8 Pulse generator 2 7 CK2 . . Logic circuit Comp.S Reference voltage generator . REF To GND of all blocks MB3793 -37A 494 240 k 4 GND 3 ...
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... When V CC This function enables the MB3793 to detect ans abnomality 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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... D Tstg — –55 Symbol Conditions Min. V — 1 — – — 0.001 TP C — 0.001 TW Ta — –40 MB3793 -37A (Ta = +25 C) Rating Unit Max +10 mA 200 mW +125 C Value Unit Typ. Max. — 6.0 V — — — ...
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... MB3793 -37A ELECTRICAL CHARACTERISTICS 1. DC Characteristics Parameter Symbol Power supply current Detection voltage Detection voltage hysteresis V difference V Clock-input threshold voltage V Clock-input hysteresis V Inhibition-input voltage Input current (CK1, CK2, INH) V Reset output voltage Reset-output minimum V power voltage * : The values enclosed in parentheses ( ) are setting assurance values. ...
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... DIAGRAM 1. Basic operation (Positive clock pulse CK1 t CKT CK2 INH V th CTP V H CTW V L RESET t PR (1) (2) (3) t CKW (4)(5) (5) (6) (7) (8) (9) (10) MB3793 -37A (11) (12) (13) 7 ...
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... MB3793 -37A 2. Basic operation (Negative clock pulse CK1 t CKT CK2 INH V th CTP V H CTW V L RESET t PR (1) (2) (3) (4)(5) ( CKW (6) (7) (8) (9) (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 to the time that allows the MB3793 to monitor the period twice as long as the input WD clock pulse. t CKW ...
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... MB3793 -37A 4. Inhibition operation (Positive clock pulse CK1 CK2 INH V th CTP V H CTW V L RESET t PR (1) (2) ( CKW (4)(5) (5) (6) (7) (11) (8) (9) (10) (12) (13) ...
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... CC reset hold time setting capacitor C 3.79 V. (3) When C has been charged for a certain period of time T TP voltage (V ) after the start of charging), the MB3793 cancels the reset (setting the RESET pin to “H” level th from “L” level reaches about 0 the MB3793 starts charging the power-on SH ...
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... If the CK2 pin inputs a clock pulse (positive edge trigger) when the C order or simultaneously, the C The MB3793 repeats operations (4) and (5) as long as the CK1/CK2 pin inputs clock pulses with the system logic circuit operating normally. ( clock pulse is fed to the CK1 or CK2 pin within the watchdog timer monitor time t with the system logic circuit, the CTW pin is set to the “ ...
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... TYPICAL CHARACTERISTICS Power supply current-Power supply voltage Watchdog timer monitoring ( INH MB3793-37A V INH kHz Duty = 10 0. 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10 Power supply voltage: V (V) CC Reset output voltage-Reset output current (P-MOS side ...
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... MB3793 -37A Reset output voltage-Power supply voltage 7 Pull-up resistance: 100 + + Power supply voltage: V Watchdog timer reset time-Ambient temperature (when monitoring + +25 C MAX 14 12 TYP ...
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... C capacitance Power-on reset time setting capacitance capacitance + MB3793 -37A Reset time-C capacitance + + ...
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... Supply voltage monitor and watchdog timer (1-clock monitor GND * : Use a capacitor with less leakage current. The MB3793 monitors the clock (CK1/2) at every other input pulse. Supply voltage monitor and watchdog timer stop INH CTW C ...
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... RESET Microprocessor 1 8 CK1 CK GND 7 GND CK2 4 and C ) and set time [ms about 10 Remark 0 100 0.01 F and 130 . MB3793 -37A V RESET Microprocessor 2 CK GND [ ...
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... MB3793 -37A ORDERING INFORMATION Part number MB3793-37PF MB3793-37PNF 18 Package 8-pin Plastic SOP (FPT-8P-M01) 8-pin Plastic SOL (FPT-8P-M02) Remarks ...
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... FUJITSU LIMITED F08002S-4C-4 C 2.25(.089)MAX (Mounting height) 0.05(.002)MIN (STAND OFF) 5.30±0.30 7.80±0.40 (.209±.012) (.307±.016) 0.15 Ø0.13(.005) M .006 Details of "A" part MB3793 -37A +0.40 6.80 –0.20 +.016 .268 –.008 +0.05 0.50±0.20 –0.02 +.002 (.020±.008) –.001 0.20(.008) ...
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... MB3793 -37A (Continued) 8-pin Plastic SOL (FPT-8P-M02) +0.25 +.010 5.05 .199 –0.20 –.008 1.27(.050)TYP "A" 3.81(.150)REF 1994 FUJITSU LIMITED F08004S-2C 3.90±0.30 6.00±0.40 (.154±.012) (.236±.016) 45° 0.40(.016) 0.42±0.10 Ø0.13(.005) M (.017±.004) 0.10(.004) 1.55±0.20(.061±.008) (Mounting height) 0.15± ...
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... Tel: (65) 281-0770 Fax: (65) 281-0220 http://www.fmap.com.sg/ F9901 FUJITSU LIMITED Printed in Japan MB3793 All Rights Reserved. The contents of this document are subject to change without notice. Customers are advised to consult with FUJITSU sales representatives before ordering. The information and circuit diagrams in this document are presented as examples of semiconductor device applications, and are not intended to be incorporated in devices for actual use ...