MB3793-42 Fujitsu Media Devices, MB3793-42 Datasheet
MB3793-42
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MB3793-42 Summary of contents
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... There is also a mask option that can detect voltages of 4.9 to 2.4V in 0.1-V steps. The model number and package code are as shown below. Model No. MB3793-42 FEATURES • Precise detection of power voltage fall: • Detection voltage with hysteresis • ...
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... MB3793-42 PIN ASSIGNMENT PIN DESCRIPTION Pin No. Symbol 1 RESET Outputs reset 2 CTW Sets monitoring time 3 CTP Sets power-on reset hold time 4 GND Ground DataSheet4U.com 2 4 DataSheet U .com (TOP VIEW RESET 2 7 CTW 3 6 CTP GND 4 5 (DIP-8P-M01) (FPT-8P-M01) ...
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... Pulse generator 1 8 CK1 Pulse generator 2 7 CK2 DataSheet4U.com 4 DataSheet U .com of all blocks Comp. O DataSheet4U.com Reference Watchdog voltage timer generator MB3793- RSFF2 R 1 590 RSFF1 Q R Comp 1.24 V REF R 2 240 k To GND of all blocks ...
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... MB3793-42 BLOCK FUNCTIONS 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. Comp. O Comp comparator to control the reset signal (RESET) output and compares the threshold voltage with the voltage at the CTP terminal for setting the power-on reset hold time ...
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... Users considering application outside the listed conditions are advised to contact their FUJITSU representatives beforehand. DataSheet4U.com 4 DataSheet U .com Symbol V CC CK1 V CK1 CK2 V CK2 INH V INH I OL RESET Tstg DataSheet4U.com Symbol MB3793-42 Rating Min Max 0 200 55 125 Value Min Typ Max V 1.2 5.0 6 0.001 ...
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... MB3793-42 ELECTRICAL CHARACTERISTICS 1. DC Characteristics Parameter Power current Detection voltage Detection voltage hysteresis difference CK input threshold voltage CK input hysteresis INH input voltage Input current (CK1,CK2,INH) Reset output voltage Reset-output minimum power voltage *1: At clock input terminals CK1 and CK2, the pulse input frequency is 1 kHz and the pulse amplitude *2: Inhibition input is at High level ...
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... DataSheet4U.com 4 DataSheet U .com Symbol Conditions CKW t CKT Rising tr Falling tf DataSheet4U.com MB3793- Value Unit Min Typ Max 80 130 180 ms 7 500 500 ns 500 ns 7 ...
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... MB3793-42 TIMING DIAGRAM 1. Basic operation (Positive clock pulse CCL CK1 CK2 INH V th CTP V H CTW V L RESET (1) (2) DataSheet4U.com 8 4 DataSheet U .com t CKW DataSheet4U.com (3) (4) (5) (5) (6) (7) (8) (9) PR (10) (11) (12) (13) (14) ...
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... Basic operation (Negative clock pulse CCL CK1 CK2 INH V th CTP V H CTW V L RESET (1) (2) DataSheet4U.com 4 DataSheet U .com t CKW DataSheet4U.com (3) (4) (5) (5) (6) (7) (8) (9) MB3793- (10) (11) (12) (13) (14) 9 ...
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... MB3793-42 3. Single-clock input monitoring (Positive clock pulse) CK1 CK2 V th CTP V H CTW V L RESET 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 long as the input clock pulse. ...
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... Inhibition operation (Positive clock pulse CCL CK1 CK2 INH V th CTP V H CTW V L RESET DataSheet4U.com 4 DataSheet U .com t CKW DataSheet4U.com (1) (2) (3) (4) (5) (5) (6) (7) (8) (9) (10) MB3793- (11) (12) (13) (14) 11 ...
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... MB3793-42 5. Clock pulse input (Positive clock pulse) CK1 CK2 V H CTW V L Note: The MB3793 watchdog timer monitors Clock 1 (CK1) and Clock 2 (CK2) pulses al- ternately. When a CK2 pulse is detected after detecting a CK1 pulse, the monitor- ing time setting capacity (C When two consecutive pulses occur on one side of this alternation before switch- ing, the second pulse is ignored ...
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... resetting is canceled and the watchdog timer restarts. th after power-off, a reset signal is output falls below about 0 MB3793-42 TIMING DIAGRAM 1. Basic operation (Positive ), a reset signal is output. ), charging of power-on reset hold time setting SH ). Vth is about 3 discharging after clock pulses are input to the ...
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... Ta 4 4.800 4.750 V 4 4.707 V 4.1 4 Reset output current I DataSheet4U.com 14 4 DataSheet U .com = 0 V) Watchdog timer stopping ( INH CC Inhibited MB3793- INH 0.01 F 0.1 F (V) CC DataSheet4U.com RESET ON RESET 58 ...
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... Ambient temperature DataSheet4U.com 4 DataSheet U .com Pull-up resistance: 100 (V) CC DataSheet4U.com 100 MB3793-42 R eset-on Reset Time - Ambient Temperature (when V rising) CC 260 240 220 200 180 160 140 120 100 ...
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... MB3793-42 (Continued) Power-on Reset Time - Power-on reset time setting capacitance Watchdog Timer Monitoring Time - C (under Ta condition Watchdog timer monitoring time setting capacitance DataSheet4U ...
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... CTW MB3793 3 CTP CK1 8 INH GND CK2 DataSheet4U.com and C ) and set time 10 Remark 3 100 = 0.1 F and MB3793-42 RESET V RESET Micro- Micro- processor 2 processor 1 GND GND 17 ...
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... MB3793-42 APPLICATION EXAMPLE 1. Monitoring Single Clock Watchdog Timer Stopping DataSheet4U.com 18 4 DataSheet U .com RESET 2 CTW MB3793 3 CTP CK1 C TP INH GND CK2 6 4 DataSheet4U.com INH RESET 2 CTW MB3793 3 CTP 8 CK1 TP 7 GND CK2 ...
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... Applying a negative voltage of 0 less to an LSI may generate a parasitic transistor, resulting in malfunction. ORDERING INFORMATION Part number MB3793-42P MB3793-42PF MB3793-42PNF DataSheet4U.com 4 DataSheet U .com resistors in series. Package 8-pin plastic DIP (DIP-8P-M01) 8-pin plastic SOP (FPT-8P-M01) 8-pin plastic SOP (FPT-8P-M02) DataSheet4U.com MB3793-42 Remarks 19 ...
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... MB3793-42 PACKAGE DIMENSIONS 8-pin plastic DIP (DIP-8P-M01) 4.36(.172)MAX 3.00(.118)MIN 1994 FUJITSU LIMITED D08006S-2C-3 C DataSheet4U.com 20 4 DataSheet U .com +0.40 9.40 –0.30 +.016 .370 –.012 1 PIN INDEX 6.20±0.25 (.244±.010) 0.51(.020)MIN 0.46±0.08 (.018±.003) +0.30 +0.30 0.99 1.52 –0 –0 +.012 +.012 DataSheet4U.com .039 .060 – ...
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... M (.019±.003) DataSheet4U.com 0.10(.004) 0.10(.004) Dimensions in mm (inches) . Note : The values in parentheses are reference values. MB3793-42 +0.03 0.17 –0.04 +.001 .007 –.002 Details of "A" part +0.25 2.00 –0.15 (Mounting height) +.010 .079 – ...
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... MB3793-42 (Continued) 8-pin plastic SOP (FPT-8P-M02 5. 1.27(.050) 2002 FUJITSU LIMITED F08004S-c-4-7 C DataSheet4U.com 22 4 DataSheet U .com Note These dimensions include resin protrusion. Note These dimensions do not include resin protrusion. Note 3) Pins width and pins thickness include plating thickness. ...
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... MB3793-42 FUJITSU LIMITED 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, such as descriptions of function and application circuit examples, in this document are presented solely for the purpose of reference to show examples of operations and uses of Fujitsu semiconductor device ...