S-19405 Series www.ablic.com AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 (c) ABLIC Inc., 2017-2018 The S-19405 Series is a watchdog timer developed using CMOS technology, which can operate with low current consumption of 3.8 A typ. The reset function and the low voltage detection function are available. Caution This product can be used in vehicle equipment and in-vehicle equipment. Before using the product in the purpose, contact to ABLIC Inc. is indispensable. Features * Detection voltage: * Detection voltage accuracy: * Input voltage: * Hysteresis width: * Current consumption: * Reset time-out period: * Watchdog operation is switchable: * Watchdog operation voltage range: * Watchdog input edge is selectable: * Operation temperature range: * Lead-free (Sn 100%), halogen-free * AEC-Q100 qualified*1 *1. 2.0 V to 5.0 V, selectable in 0.1 V step 2.0% VDD = 0.9 V to 6.0 V 5% typ. 3.8 A typ. 14.5 ms typ. (CPOR = 2200 pF) Enable, Disable VDD = 2.5 V to 6.0 V Rising edge, falling edge Ta = -40C to +125C Contact our sales office for details. Applications * Automotive (engine, transmission, suspension, ABS, related-devices for EV / HEV / PHEV, etc.) Packages * TMSOP-8 * HSNT-8(2030) 1 AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series Block Diagrams 1. S-19405 Series A / B Type CWDT VDD WEN Noise filter WDI Noise filter RST WDT circuit Reference voltage circuit WDO Voltage detection circuit VSS CPOR Figure 1 2. S-19405 Series D / E Type CWDT VDD WEN Noise filter WDI Noise filter RST WDT circuit Reference voltage circuit Voltage detection circuit VSS CPOR Figure 2 2 WDO AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series 3. S-19405 Series G / H Type CWDT VDD WEN Noise filter WDI Noise filter RST WDT circuit Reference voltage circuit WDO Voltage detection circuit VSS CPOR Figure 3 4. S-19405 Series J / K Type CWDT VDD WEN Noise filter WDI Noise filter RST WDT circuit Reference voltage circuit WDO Voltage detection circuit VSS CPOR Figure 4 3 AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series AEC-Q100 Qualified This IC supports AEC-Q100 for the operation temperature grade 1. Contact our sales office for details of AEC-Q100 reliability specification. Product Name Structure Users can select the product type, detection voltage, and package type for the S-19405 Series. Refer to "1. Product name" regarding the contents of product name, "2. Product type list" regarding the product types, "3. Packages" regarding the package drawings. 1. Product name S-19405 x xx A - xxxx U 4 Environmental code U: Lead-free (Sn 100%), halogen-free Package abbreviation and IC packing specifications*1 K8T2: TMSOP-8, Tape A8T1: HSNT-8(2030), Tape Operation temperature A: Ta = -40C to +125C Detection voltage 20 to 50 (e.g., when the detection voltage is 2.0 V, it is expressed as 20.) Product type*2 A, B, D, E, G, H, J, K *1. *2. 2. Refer to the tape drawing. Refer to "2. Product type list". Product type list Table 1 3. Constant Current Source Pull-down for WEN Pin A Active "H" Available Rising edge B Active "H" Available Falling edge Available D Active "L" Unavailable Rising edge Available E Active "L" Unavailable Falling edge Available G Active "H" Available Rising edge Unavailable H Active "H" Available Falling edge Unavailable J Active "L" Unavailable Rising edge Unavailable K Active "L" Unavailable Falling edge Unavailable Input Edge Available Packages Table 2 Package Name TMSOP-8 HSNT-8(2030) 4 Output Pull-up Resistor WEN Pin Logic Product Type Package Drawing Codes Dimension Tape Reel Land FM008-A-P-SD PP008-A-P-SD FM008-A-C-SD PP008-A-C-SD FM008-A-R-SD PP008-A-R-SD - PP008-A-L-SD AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series Pin Configurations 1. TMSOP-8 Table 3 Top view 1 2 3 4 8 7 6 5 Figure 5 2. Pin No. 1 2 3 4 5 6 7 8 Symbol RST CPOR CWDT VSS WEN ________ WDO WDI VDD Pin No. 1 2 3 4 5 6 7 8 Symbol _______ RST CPOR CWDT VSS WEN ________ WDO WDI VDD _______ Description Reset output pin Reset time-out period adjustment pin Watchdog time adjustment pin GND pin Watchdog enable pin Watchdog output pin Watchdog input pin Voltage input pin HSNT-8(2030) Table 4 Top view 1 8 4 5 Bottom view 8 1 5 4 Description Reset output pin Reset time-out period adjustment pin Watchdog time adjustment pin GND pin Watchdog enable pin Watchdog output pin Watchdog input pin Voltage input pin *1 Figure 6 *1. Connect the heat sink of backside at shadowed area to the board, and set electric potential GND. However, do not use it as the function of electrode. 5 AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series Pin Functions Refer to " Operations" for details. 1. ________ RST pin This is a reset output pin. It outputs "L" when detecting a low voltage. _______ Be sure to connect an external pull-up resistor (RextR) to the RST pin in the product without an output pull-up resistor. 3. _________ WDO pin This is the watchdog output (time-out detection) pin. ________ Be sure to connect an external pull-up resistor (RextW ) to the WDO pin in the product without an output pull-up ________ _______ resistor. Table 5 shows the WDO pin and RST pin output statuses. Table 5 Operation Status Normal operation Low voltage detection Time-out detection When watchdog timer is Disable ________ WDO Pin "H" "L" "L" "H" _______ RST Pin "H" "L" "H" "H" 3. CPOR pin This is a pin to connect an adjustment capacitor for reset output delay time (CPOR) in order to generate the reset time-out period (tRST). CPOR is charged and discharged by an internal constant current circuit, and the charge-discharge duration is tRST. tRST is calculated by using the following equation. Take into consideration CPOR variation. tRST = 6,500,000 x CPOR [F] + 0.0002 4. CWDT pin This is a pin to connect an adjustment capacitor for watchdog output delay time (CWDT) in order to generate the watchdog time-out period (tWDU). CWDT is charged and discharged by an internal constant current circuit. tWDU is calculated by using the following equation. Take into consideration CWDT variation. tWDU = 50,000,000 x CWDT [F] + 0.0011 5. WEN pin This is a pin to switch Enable / Disable of the watchdog timer. The voltage detection circuit independently operates at all times regardless of the watchdog timer operation. 5. 1 S-19405 Series A / B / G / H type (WEN pin logic active "H" product) The watchdog timer becomes Enable if the input is "H", and the charge-discharge operation is performed at the CWDT pin. The WEN pin is connected to a constant current source (0.3 A typ.) and is pulled down internally. 5. 2 S-19405 Series D / E / J / K type (WEN pin logic active "L" product) The watchdog timer becomes Enable if the input is "L", and the charge-discharge operation is performed at the CWDT pin. The WEN pin is not pulled down internally. 6. WDI pin This is an input pin to receive a signal from the monitored object. By inputting an edge at an appropriate timing, the WDI pin confirms the normal operation of the monitored object. The WDI pin is connected to a constant current source (0.3 A typ.) and is pulled down internally. 6 AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series Absolute Maximum Ratings Table 6 (Ta = -40C to +125C unless otherwise specified) Absolute Maximum Rating Unit VDD pin voltage VDD V VSS - 0.3 to VSS + 7.0 WDI pin voltage VWDI V VSS - 0.3 to VDD + 0.3 VSS + 7.0 WEN pin voltage VWEN V VSS - 0.3 to VDD + 0.3 VSS + 7.0 CPOR pin voltage VCPOR V VSS - 0.3 to VDD + 0.3 VSS + 7.0 CWDT pin voltage VCWDT V VSS - 0.3 to VDD + 0.3 VSS + 7.0 _______ A / B / D / E type V VSS - 0.3 to VDD + 0.3 VSS + 7.0 RST pin voltage V RST G / H / J / K type V VSS - 0.3 to VSS + 7.0 ________ A / B / D / E type VSS - 0.3 to VDD + 0.3 VSS + 7.0 V VWDO WDO pin voltage G / H / J / K type V VSS - 0.3 to VSS + 7.0 Operation ambient temperature Topr -40 to +125 C Storage temperature Tstg -40 to +150 C Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical damage. These values must therefore not be exceeded under any conditions. Item Symbol _______ ________ Thermal Resistance Value Table 7 Item Symbol Condition TMSOP-8 Junction-to-ambient thermal resistance*1 Typ. Max. Unit Board A - 160 - C/W Board B - 133 - C/W Board C - - - C/W Board D - - - C/W Board E - - - C/W Board A - 181 - C/W Board B - - C/W Board C - 135 40 - C/W Board D - 42 - C/W Board E Test environment: compliance with JEDEC STANDARD JESD51-2A - 32 - C/W JA HSNT-8(2030) *1. Min. Remark Refer to " Power Dissipation" and "Test Board" for details. Recommended Operation Conditions Table 8 Item Symbol Condition Detector block Min. Typ. Max. Unit 0.9 - 6.0 V VDD pin voltage VDD Watchdog timer block 2.5 - 6.0 V Set detection voltage External pull-up resistor _______ for RST pin External pull-up resistor ________ for WDO pin Adjustment capacitor for reset output delay time Adjustment capacitor for watchdog output delay time -VDET(S) 0.1 V step 2.0 - 5.0 V RextR S-19405 Series G / H / J / K type 10 100 - k RextW S-19405 Series G / H / J / K type 10 100 - k CPOR - 0.1 2.2 1000 nF CWDT - 0.1 0.47 1000 nF 7 AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series Electrical Characteristics Table 9 (1 / 2) Item Detection voltage*1 Hysteresis width (WEN pin logic active "H" product, VDD = 5.0 V, Ta = -40C to +125C unless otherwise specified) Test Symbol Condition Min. Typ. Max. Unit Circuit -VDET(S) -VDET(S) -VDET(S) V - -VDET 1 x 0.98 x 1.02 -VDET -VDET -VDET V VHYS - 1 x 0.03 x 0.05 x 0.07 Current consumption during operation Reset time-out period ISS1 When watchdog timer operates - 3.8 9.0 A 2 tRST CPOR = 2200 pF 8.7 14.5 20 ms 3 Watchdog time-out period tWDU CWDT = 470 pF 15 24.6 34 ms 3 Reset output voltage "H" VROH VDD - 1.0 - - V 4 - - 0.4 V 5 - -0.85 -0.4 A 6 Reset output voltage "L" VROL Reset output pull-up current IRUP A / B / D / E type only External pull-up resistor of 100 k is connected for G / H / J / K type V RST = 0 V, A / B / D / E type only VDD = 1.5 V _______ Reset output current IROUT VDS = 0.4 V 0.48 1.1 - mA 7 VDD = 1.8 V 0.8 1.6 - mA 7 VDD = 2.5 V 1.0 2.6 - mA 7 VDD = 3.0 V 1.4 3.3 - mA 7 Reset output leakage current IRLEAK VDS = 6.0 V, VDD = 6.0 V Watchdog output voltage "H" VWOH A / B / D / E type only Watchdog output voltage "L" VWOL Watchdog output pull-up current IWUP Watchdog output current External pull-up resistor of 100 k is connected for G / H / J / K type VWDO = 0 V, A / B / D / E type only VDD = 1.5 V - - 0.096 A 8 VDD - 1.0 - - V 9 - - 0.4 V 10 - -0.85 -0.4 A 11 ________ IWOUT VDS = 0.4 V 0.48 1.1 - mA 12 VDD = 1.8 V 0.8 1.6 - mA 12 VDD = 2.5 V 1.0 2.6 - mA 12 VDD = 3.0 V 1.4 3.3 - mA 12 - - 0.096 A 13 Watchdog output leakage current Input pin voltage 1 "H" IWLEAK VDS = 6.0 V, VDD = 6.0 V VSH1 WEN pin 0.7 x VDD - - V 14 Input pin voltage 1 "L" VSL1 - - 0.3 x VDD V 14 Input pin voltage 2 "H" VSH2 WEN pin WDI pin 0.7 x VDD - - V 14 Input pin voltage 2 "L" VSL2 WDI pin - - 0.3 x VDD V 14 8 AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series Table 9 (2 / 2) (WEN pin logic active "H" product, VDD = 5.0 V, Ta = -40C to +125C unless otherwise specified) Test Symbol Condition Min. Typ. Max. Unit Circuit Item Input pin current 1 "H" ISH1 A/B/G/H WEN pin, type VDD = 6.0 V, D/E/J/K Input pin voltage = 6.0 V type WEN pin, VDD = 6.0 V, Input pin voltage = 0 V WDI pin, VDD = 6.0 V, Input pin voltage = 6.0 V WDI pin, VDD = 6.0 V, Input pin voltage = 0 V - 0.3 1.0 A 14 -0.1 - 0.1 A 14 -0.1 - 0.1 A 14 - 0.3 1.0 A 14 -0.1 - 0.1 A 14 Input pin current 1 "L" ISL1 Input pin current 2 "H" ISH2 Input pin current 2 "L" ISL2 Input pulse width "H"*2 thigh1 - 1.5 - - s 14 Input pulse width "L"*2 tlow1 - 1.5 - - s 14 Watchdog output delay time tWOUT - - 25 40 s 3 Reset output delay time - - 25 40 s 3 tROUT tiset - 1.0 - - s 3 -VDET: Actual detection voltage, -VDET(S): Set detection voltage The input pulse width "H" (thigh1) and the input pulse width "L" (tlow1) are defined as shown in Figure 7. Inputs to the WEN pin and the WDI pin should be greater than or equal to the min. value specified in " Electrical Characteristics". Input setup time *1. *2. thigh1 VSH1 VSH1 WEN VSL1 VSL1 tlow1 thigh1 VSH2 WDI VSH2 VSL2 VSL2 tlow1 Figure 7 9 AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series Test Circuits Refer to " Recommended Operation Conditions" when setting constants of external pull-up resistors (RextR, RextW ) and external capacitors (CPOR, CWDT). (1) S-19405 Series A / B / D / E type (2) S-19405 Series G / H / J / K type VDD CPOR VDD CPOR WDO CWDT CWDT WDI RST WEN V V + + Figure 8 + RST WEN V VSS WDO WDI V + + VSS Test Circuit 1 A VDD CPOR WDO CWDT WDI WEN RST VSS Figure 9 Test Circuit 2 (1) S-19405 Series A / B / D / E type (2) S-19405 Series G / H / J / K type VDD VDD CPOR CPOR CWDT WDO CWDT WDI RST WEN V WDI + VSS VDD CPOR CWDT WDO WDI WEN RST VSS Figure 11 10 RST WEN VSS Figure 10 Test Circuit 4 V + WDO Test Circuit 3 V + AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series (1) S-19405 Series A / B / D / E type (2) S-19405 Series G / H / J / K type VDD CPOR VDD CPOR WDO CWDT WDI WDI WEN V + Figure 12 VDD CPOR WDO WDO CWDT WDI RST WEN RST WEN A VSS A + VSS + Test Circuit 6 Figure 14 Test Circuit 7 VDD CPOR VDD CPOR CWDT WDO CWDT + Test Circuit 5 WDI WDO WDI WDI RST WEN A + WEN Test Circuit 8 Figure 16 (1) S-19405 Series A / B / D / E type + Test Circuit 9 VDD CPOR WDO CWDT WDI RST WEN V (2) S-19405 Series G / H / J / K type VDD CPOR CWDT RST VSS VSS Figure 15 V VSS VDD CPOR CWDT RST WEN RST VSS Figure 13 WDO CWDT V WDO WDI + RST WEN V + VSS VSS Figure 17 Test Circuit 10 11 AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series VDD CPOR CWDT VDD CPOR WDO CWDT WEN RST A WEN + VSS Test Circuit 11 Figure 19 CWDT WDO WDI WEN Test Circuit 12 VDD VDD CPOR RST A CPOR + CWDT + A Test Circuit 13 WDO WEN, WDI RST VSS VSS 12 + RST VSS Figure 20 A WDI WDI Figure 18 WDO Figure 21 Test Circuit 14 V + AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series Operations From power-on to reset release The S-19405 Series initiates the initialization if the VDD pin voltage exceeds the release voltage (+VDET). The ________ charge-discharge operation to the CPOR pin is initiated after the passage of the initialization time (tINIT), and _______ the WDO pin output and the RST pin output change from "L" to "H" after the operation is performed 4 times. VDD +VDET VCPU CPOR VCPL WDO Output "L" "H" RST tINIT Output "L" "H" tRST Remark VCPU: CPOR charge upper limit threshold (1.25 V typ.) VCPL: CPOR charge lower limit threshold (0.20 V typ.) Figure 22 tINIT changes according to the power supply rising time. Refer to Figure 23 for the relation between tINIT and the power supply rising time. Ta = +25C 0.1 Initialization time [s] 1. -VDET = 3.3 V 0.01 -VDET = 2.0 V 0.001 0.0001 -VDET = 5.0 V 0.00001 0.000001 0.00001 0.0001 0.001 0.01 0.1 Power supply rising time [s] Figure 23 Power Supply Rising Time Dependency of Initialization Time Power supply rising time 6.0 V VDD = WEN 1.8 V CPOR +VDET VCPL Initialization time*1 *1. The initialization time is the time period from when the VDD pin voltage reaches +VDET to when CPOR rises. Figure 24 Initialization Time 13 AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series 2. From reset release to initiation of charge-discharge operation to CWDT pin The charge-discharge operation to the CWDT pin differs depending on the status of the WEN pin at the reset release. 2. 1 When WEN pin is "H" at reset release (Active "H") Since the watchdog timer is Enable, the S-19405 Series initiates the charge-discharge operation to the CWDT pin. VDD CPOR CWDT WEN (Active "H") WDO RST Figure 25 2. 2 WEN Pin = "H" When WEN pin is "L" at reset release (Active "H") Since the watchdog timer is Disable after the CPOR pin performs the charge-discharge operation 4 times, the S-19405 Series does not initiate the charge-discharge operation to the CWDT pin. If the input to the WEN pin changes to "H" in this status, the S-19405 Series initiates the charge-discharge operation to the CWDT pin. VDD CPOR CWDT WEN Charge-discharge operation is initiated at WEN pin = "H" (Active "H") WDO RST Figure 26 14 WEN Pin = "L" "H" AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series 3. Watchdog time-out detection The watchdog timer detects a time-out after the charge-discharge operation to the CWDT pin is performed 32 times, ________ then the WDO pin output changes from "H" to "L". VDD 1 2 3 4 CPOR 1 1 2 3 4 5 2 3 4 29 30 31 32 1 2 3 CWDT WDI "L" WEN (Active "H") WDO RST tWDU tRST Figure 27 4. Internal counter reset due to edge detection When the WDI pin detects an edge during the charge-discharge operation to the CWDT pin, the internal counter which counts the number of times of the charge-discharge operation is reset. The CWDT pin initiates the discharge operation when an edge is detected, and initiates the charge-discharge operation again after the discharge operation is completed. 4. 1 Counter reset due to rising edge detection (S-19405AxxA, S-19405DxxA, S-19405GxxA, S-19405JxxA) VDD 1 2 3 4 1 2 3 4 CPOR 1 2 3 4 1 2 3 4 30 31 32 1 CWDT WDI Counter reset due to rising edge detection Time-out after counter reset WEN (Active "H") WDO RST Figure 28 15 AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series 4. 2 Counter reset due to falling edge detection (S-19405BxxA, S-19405ExxA, S-19405HxxA, S-19405KxxA) VDD 1 2 3 1 4 2 3 4 CPOR 1 2 3 4 1 2 3 4 30 31 32 1 CWDT WDI Counter reset due to falling edge detection Time-out after counter reset WEN (Active "H") WDO RST Figure 29 5. WEN pin operation during charge-discharge operation to CWDT pin When the WEN pin changes from "H" to "L" during the charge-discharge operation to the CWDT pin, the CWDT pin performs the discharge operation. Moreover, the internal counter which counts the number of times of the charge-discharge operation for the CWDT pin is also reset. If the WEN pin changes to "H" again in this status, the CWDT pin initiates the charge-discharge operation. VDD 1 2 3 4 1 2 3 4 CPOR 1 2 3 4 1 2 31 32 1 2 CWDT Watchdog timer restarts the operation at WEN pin = "H" WEN (Active "H") Charge-discharge operation is stopped, counter reset WDO RST Figure 30 16 AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series 6. Operation of low voltage detection The voltage detection circuit detects a low voltage_______ if the power supply voltage falls below the detection voltage, and ________ then "L" is output from the WDO pin and the RST pin. The output is maintained until the charge-discharge operation of the CPOR pin is performed 4 times. The S-19405 Series can detect a low voltage even if either the CPOR pin or the WDT pin performs the charge-discharge operation. In this case, the status of the WEN pin does not have an affect. VDD 1 2 1 2 3 4 1 2 3 4 CPOR 1 2 3 4 1 2 CWDT WDI WEN "H" or "L" "H" or "L"*1 (Active "H") WDO RST Figure 31 *1. When the WEN pin is Disable, the charge-discharge operation of CWDT pin is not performed. 7. WEN pin and WDI pin Each of the WEN pin and the WDI pin has a noise filter. If the power supply voltage is 5.0 V, noise with a minimum pulse width of 200 ns can be eliminated. 17 AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series Standard Circuits 1. S-19405 Series A / B / D / E type VDD VDD WDO WEN WDI RST VSS CPOR CWDT CPOR*1 *1. *2. CWDT*2 Adjustment capacitor for reset output delay time (CPOR) should be connected directly to the CPOR pin and the VSS pin. Adjustment capacitor for watchdog output delay time (CWDT) should be connected directly to the CWDT pin and the VSS pin. A capacitor of 100 pF to 1 F can be used for CPOR and CWDT. Figure 32 2. S-19405 Series G / H / J / K type RextW*1 VDD VDD WDO WEN RextR*2 WDI RST VSS CPOR*3 *1. *2. *3. *4. CPOR CWDT CWDT*4 ________ RextW is an external pull-up resistor for the _______ WDO pin. RextR is an external pull-up resistor for the RST pin. Adjustment capacitor for reset output delay time (CPOR) should be connected directly to the CPOR pin and the VSS pin. Adjustment capacitor for watchdog output delay time (CWDT) should be connected directly to the CWDT pin and the VSS pin. A capacitor of 100 pF to 1 F can be used for CPOR and CWDT. Figure 33 Caution The above connection diagrams and constants will not guarantee successful operation. Perform thorough evaluation using the actual application to set the constants. 18 AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series Precautions * It will take time for the discharge operation to be performed if the capacitance of CPOR is extremely large at the low voltage detection, so the discharge operation may not be completed by the time the power supply voltage exceeds the detection voltage. In that case, since the charge-discharge operation of the CPOR pin is performed after the discharge operation is completed, the delay time of the same time length as the discharge operation occurs in reset time-out period (tRST). * Select a capacitor which satisfies the following equation for CPOR and CWDT. If this condition is not satisfied, the delay time of the same time length as the discharge operation occurs in tRST since the discharge operation of an external capacitor connected to the CWDT pin is not completed by the time the CWDT pin initiates the next charge-discharge operation. CWDT / CPOR 600 * When the power supply voltage falls to 0.9 V or lower, set a time interval of 20 s or longer by the time the power supply is raised again. If the appropriate time length is not secured, the time-out period after raising the power supply voltage may get delayed. * When the time that the power supply voltage falls below the detection voltage is short, the S-19405 Series may not detect a voltage. In that case, the time-out period after raising the power supply voltage may get delayed. * Since input pins (the WEN pin and the WDI pin) in the S-19405 Series are CMOS configurations, make sure that an intermediate potential is not input when the S-19405 Series operates. ________ _______ * Since the WDO pin and the RST pin are affected by external resistance and external capacitance, use the S-19405 Series after performing thorough evaluation with the actual application. * Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic protection circuit. * ABLIC Inc. claims no responsibility for any disputes arising out of or in connection with any infringement by products including this IC of patents owned by a third party. 19 AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series Characteristics (Typical Data) 1. Current consumption during operation (ISS1) vs. Input voltage (VDD) 5.0 WDT = OFF, -VDET(S) = 4.0 V, Ta = +25C WDT = ON, -VDET(S) = 4.0 V, Ta = +25C, WDI input 5.0 Ta = +125C 4.5 ISS1 [A] ISS1 [A] 4.0 3.0 2.0 1.0 Ta = 40C 4.0 Ta = +25C 3.5 3.0 0.0 0 1 2 3 4 5 4.0 6 4.5 VDD [V] 5.0 5.5 VDD [V] 6.0 6.5 2. Current consumption during operation (ISS1) vs. Temperature (Ta) 3. Detection voltage (-VDET), Release voltage (+VDET) vs. Temperature (Ta) WDT = ON, -VDET(S) = 4.0 V, VDD = 5.0 V, WDI input 5.0 VDET, +VDET [V] ISS1 [A] 4.0 3.0 2.0 1.0 0.0 4.5 -VDET(S) = 4.0 V +VDET 4.0 VDET 3.5 3.0 40 25 0 25 50 Ta [C] 75 100 40 25 125 4. Reset time-out period (tRST) vs. Temperature (Ta) 0 30 30 0 40 25 25 50 Ta [C] 75 100 10 125 6. Reset output delay time (tROUT) vs. Temperature (Ta) 40 25 0 30 30 20 tWOUT [s] tROUT [s] 40 0 40 25 25 50 Ta [C] 75 100 125 100 125 20 10 0 0 75 VDD = 5.0 V, CWDT = 470 pF 40 10 25 50 Ta [C] 7. Watchdog output delay time (tWOUT) vs. Temperature (Ta) VDD = -VDET(S) + 1.0 V -VDET(S) - 1.0 V, CPOR = 2200 pF 20 125 20 0 0 100 VDD = 5.0 V, CWDT = 470 pF 40 tWDU [ms] tRST [ms] VDD = 5.0 V, CPOR = 2200 pF 10 75 5. Watchdog time-out period (tWDU) vs. Temperature (Ta) 40 20 25 50 Ta [C] 40 25 0 25 50 Ta [C] 75 100 125 AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series 8. Reset time-out period (tRST) vs. CPOR 9. VDD = 5.0 V, Ta = +25C 10 VDD = 5.0 V, Ta = +25C 100 10 tWDU [s] 1 tRST [s] Watchdog time-out period (tWDU) vs. CWDT 0.1 0.01 0.001 1 0.1 0.01 0.0001 0.0001 0.001 0.01 CPOR [F] 0.1 1 0.001 0.0001 0.001 0.01 CWDT [F] 0.1 1 10. Nch driver output current (IWOUT) vs. Input voltage (VDD) VDS = 0.4 V, -VDET(S) = 4.0 V 6.0 IWOUT [mA] Ta = +25C 4.0 Ta = 40C 2.0 Ta = +125C 0.0 0 1 2 3 VDD [V] 4 5 21 AUTOMOTIVE, 125C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION Rev.1.2_00 S-19405 Series Power Dissipation TMSOP-8 HSNT-8(2030) Tj = +125C max. 0.8 B 0.6 A 0.4 0.2 0.0 0 25 50 75 100 125 150 175 Tj = +125C max. 5 Power dissipation (PD) [W] Power dissipation (PD) [W] 1.0 4 E 3 C 2 D B 1 0 A 0 25 Ambient temperature (Ta) [C] Board 22 50 75 100 125 150 Ambient temperature (Ta) [C] Power Dissipation (PD) Board Power Dissipation (PD) A 0.63 W A 0.55 W B B 0.74 W C 0.75 W - C 2.50 W D - D 2.38 W E - E 3.13 W 175 TMSOP-8 Test Board (1) Board A ICMountArea Item Size [mm] Material Number of copper foil layer Copper foil layer [mm] 1 2 3 4 Thermal via Specification 114.3 x 76.2 x t1.6 FR-4 2 Land pattern and wiring for testing: t0.070 74.2 x 74.2 x t0.070 - (2) Board B Item Size [mm] Material Number of copper foil layer Copper foil layer [mm] Thermal via 1 2 3 4 Specification 114.3 x 76.2 x t1.6 FR-4 4 Land pattern and wiring for testing: t0.070 74.2 x 74.2 x t0.035 74.2 x 74.2 x t0.035 74.2 x 74.2 x t0.070 - No. TMSOP8-A-Board-SD-1.0 ABLIC Inc. HSNT-8(2030) Test Board ICMountArea (1) Board A Item Size [mm] Material Number of copper foil layer Copper foil layer [mm] 1 2 3 4 Thermal via Specification 114.3 x 76.2 x t1.6 FR-4 2 Land pattern and wiring for testing: t0.070 74.2 x 74.2 x t0.070 - (2) Board B Item Size [mm] Material Number of copper foil layer Copper foil layer [mm] 1 2 3 4 Thermal via Specification 114.3 x 76.2 x t1.6 FR-4 4 Land pattern and wiring for testing: t0.070 74.2 x 74.2 x t0.035 74.2 x 74.2 x t0.035 74.2 x 74.2 x t0.070 - (3) Board C Item Size [mm] Material Number of copper foil layer Copper foil layer [mm] Thermal via 1 2 3 4 Specification 114.3 x 76.2 x t1.6 FR-4 4 Land pattern and wiring for testing: t0.070 74.2 x 74.2 x t0.035 74.2 x 74.2 x t0.035 74.2 x 74.2 x t0.070 Number: 4 Diameter: 0.3 mm enlargedview No. HSNT8-A-Board-SD-2.0 ABLIC Inc. HSNT-8(2030) Test Board ICMountArea (4) Board D Item Size [mm] Material Number of copper foil layer Specification 114.3 x 76.2 x t1.6 FR-4 4 Thermal via 2 Pattern for heat radiation: 2000mm t0.070 74.2 x 74.2 x t0.035 74.2 x 74.2 x t0.035 74.2 x 74.2 x t0.070 - Item Size [mm] Material Number of copper foil layer Specification 114.3 x 76.2 x t1.6 FR-4 4 Copper foil layer [mm] 1 2 3 4 enlargedview (5) Board E Copper foil layer [mm] Thermal via 1 2 3 4 2 Pattern for heat radiation: 2000mm t0.070 74.2 x 74.2 x t0.035 74.2 x 74.2 x t0.035 74.2 x 74.2 x t0.070 Number: 4 Diameter: 0.3 mm enlargedview No. HSNT8-A-Board-SD-2.0 ABLIC Inc. 2.900.2 8 5 1 4 0.130.1 0.20.1 0.650.1 No. FM008-A-P-SD-1.2 TITLE TMSOP8-A-PKG Dimensions No. FM008-A-P-SD-1.2 ANGLE UNIT mm ABLIC Inc. 2.000.05 4.000.1 4.000.1 1.000.1 +0.1 1.5 -0 1.050.05 0.300.05 3.250.05 4 1 5 8 Feed direction No. FM008-A-C-SD-2.0 TITLE TMSOP8-A-Carrier Tape FM008-A-C-SD-2.0 No. ANGLE UNIT mm ABLIC Inc. 16.5max. 13.00.3 Enlarged drawing in the central part 130.2 (60) (60) No. FM008-A-R-SD-1.0 TITLE TMSOP8-A-Reel No. FM008-A-R-SD-1.0 QTY. ANGLE UNIT mm ABLIC Inc. 4,000 2.00.1 8 5 (1.70) 1 4 +0.05 0.08 -0.02 0.5 0.230.1 The heat sink of back side has different electric potential depending on the product. Confirm specifications of each product. Do not use it as the function of electrode. No. PP008-A-P-SD-2.0 TITLE HSNT-8-A-PKG Dimensions No. PP008-A-P-SD-2.0 ANGLE UNIT mm ABLIC Inc. +0.1 o1.5 -0 2.00.05 4.00.1 0.250.05 +0.1 o1.0 -0 0.600.05 4.00.1 2.30.05 4 321 5 6 78 Feed direction No. PP008-A-C-SD-1.0 TITLE HSNT-8-A-Carrier Tape No. PP008-A-C-SD-1.0 ANGLE UNIT mm ABLIC Inc. +1.0 9.0 - 0.0 11.41.0 Enlarged drawing in the central part o130.2 (60) (60) No. PP008-A-R-SD-1.0 HSNT-8-A-Reel TITLE No. PP008-A-R-SD-1.0 ANGLE QTY. UNIT mm ABLIC Inc. 5,000 1.6 0.30 0.50 No. PP008-A-L-SD-1.0 TITLE No. HSNT-8-A -Land Recommendation PP008-A-L-SD-1.0 ANGLE UNIT mm ABLIC Inc. Disclaimers (Handling Precautions) 1. All the information described herein (product data, specifications, figures, tables, programs, algorithms and application circuit examples, etc.) is current as of publishing date of this document and is subject to change without notice. 2. The circuit examples and the usages described herein are for reference only, and do not guarantee the success of any specific mass-production design. ABLIC Inc. is not responsible for damages caused by the reasons other than the products described herein (hereinafter "the products") or infringement of third-party intellectual property right and any other right due to the use of the information described herein. 3. ABLIC Inc. is not responsible for damages caused by the incorrect information described herein. 4. Be careful to use the products within their specified ranges. Pay special attention to the absolute maximum ratings, operation voltage range and electrical characteristics, etc. ABLIC Inc. is not responsible for damages caused by failures and / or accidents, etc. that occur due to the use of the products outside their specified ranges. 5. When using the products, confirm their applications, and the laws and regulations of the region or country where they are used and verify suitability, safety and other factors for the intended use. 6. When exporting the products, comply with the Foreign Exchange and Foreign Trade Act and all other export-related laws, and follow the required procedures. 7. The products must not be used or provided (exported) for the purposes of the development of weapons of mass destruction or military use. ABLIC Inc. is not responsible for any provision (export) to those whose purpose is to develop, manufacture, use or store nuclear, biological or chemical weapons, missiles, or other military use. 8. The products are not designed to be used as part of any device or equipment that may affect the human body, human life, or assets (such as medical equipment, disaster prevention systems, security systems, combustion control systems, infrastructure control systems, vehicle equipment, traffic systems, in-vehicle equipment, aviation equipment, aerospace equipment, and nuclear-related equipment), excluding when specified for in-vehicle use or other uses. Do not apply the products to the above listed devices and equipments without prior written permission by ABLIC Inc. Especially, the products cannot be used for life support devices, devices implanted in the human body and devices that directly affect human life, etc. Prior consultation with our sales office is required when considering the above uses. ABLIC Inc. is not responsible for damages caused by unauthorized or unspecified use of our products. 9. Semiconductor products may fail or malfunction with some probability. The user of the products should therefore take responsibility to give thorough consideration to safety design including redundancy, fire spread prevention measures, and malfunction prevention to prevent accidents causing injury or death, fires and social damage, etc. that may ensue from the products' failure or malfunction. The entire system must be sufficiently evaluated and applied on customer's own responsibility. 10. The products are not designed to be radiation-proof. The necessary radiation measures should be taken in the product design by the customer depending on the intended use. 11. The products do not affect human health under normal use. However, they contain chemical substances and heavy metals and should therefore not be put in the mouth. The fracture surfaces of wafers and chips may be sharp. Be careful when handling these with the bare hands to prevent injuries, etc. 12. When disposing of the products, comply with the laws and ordinances of the country or region where they are used. 13. The information described herein contains copyright information and know-how of ABLIC Inc. The information described herein does not convey any license under any intellectual property rights or any other rights belonging to ABLIC Inc. or a third party. Reproduction or copying of the information from this document or any part of this document described herein for the purpose of disclosing it to a third-party without the express permission of ABLIC Inc. is strictly prohibited. 14. For more details on the information described herein, contact our sales office. 2.2-2018.06 www.ablic.com