sclt3-8bt8-tr STMicroelectronics, sclt3-8bt8-tr Datasheet
sclt3-8bt8-tr
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sclt3-8bt8-tr Summary of contents
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... EN60947-5-2 2-wire proximity sensor compatibility Description = 2.2 kΩ: I The SCLT3-8BT8 provides an 8-line protected digital input termination with serialized state transfer. This device enhances the I/O module density by cutting the dissipation (78 mW per input) and reducing the count of opto-transistors. An adjustable digital filter and an LED driver are embedded in each type 3 input section ...
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... SPI data transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 SPI transfer speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Power bus voltage monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Over temperature alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Parity checksum bits calculation and transfer . . . . . . . . . . . . . . . . . . . . 14 SPI hardware interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Loss of V power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 CC Interfacing the SPI section to the I/O controller through optotransistors 25 Considerations on the power section . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Doc ID 15191 Rev 3 SCLT3-8BT8 ...
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... SCLT3-8BT8 3.5.2 3.6 Under voltage alarm setting for IEC and device-net applications . . . . . . . 27 3.7 Input operation for the device-net applications . . . . . . . . . . . . . . . . . . . . . 28 3.8 Dissipation calculation in the SCLT3-8 circuit . . . . . . . . . . . . . . . . . . . . . . 28 4 Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 6 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Considerations on the logic section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Doc ID 15191 Rev 3 ...
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... V < lines lines 7 lines 4 lines Current reference Over temperature Oscillator Clock divider alarm Doc ID 15191 Rev 3 SCLT3-8BT8 MISO MISO MISO /MISO /MISO /MISO COM COM COM S S ...
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... SCLT3 -8BT8 SCLT3 -8BT8 Doc ID 15191 Rev 3 Circuit block diagram Pin # Exposed pad 18, 19, 28 36, 37 ...
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... SCLT SCLT OFF 0 (mA) Doc ID 15191 Rev 3 SCLT3 -8 SCLT3 -8 SCLT3 - Voltage COM COM COM SCK SCK SCK O-T O-T O 16-bit 8 / 16-bit 8 / 16-bit /CS /CS /CS O-T O-T O-T State transfer State transfer ...
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... The SCLT3 8-line current limiting input array compatible with type 1 and 3 (>2 mA) characteristics of the IEC 61131-2 standard. Each input voltage clamping block protects the module input against electromagnetic ...
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... FT CKF (R ) OSC OSC Table 2. Fast 60 kHz 20 kHz 20 µs 50 µs 51 kΩ 150 kΩ 10 µs 25 µs COM COM Doc ID 15191 Rev 3 SCLT3-8BT8 Filter Medium Slow 5 kHz 300 Hz 230 µs 3 kΩ 1.3 MΩ 115 µs 1500 µ ...
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... SCLT3-8BT8 Figure 6. Two-step digital filter placed after the analog section of the logic input CKF CKF 2.4 Operation of the SCLT with the SPI bus The SPI bus master controller manages the data transfer with the chip select signal /CS and controls the data shift in the register with the clock SCK signal. This data transfer operation ...
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... Then the other data bits are written out on the falling edge of the clock signal SCK. The output MISO goes to high impedance tri-state shown on goes in high state. 10/ 250kΩ 2kΩ SCK ESD HBM Doc ID 15191 Rev 3 SCLT3-8BT8 = When POL PHA 2pF SCLT3-8 Table 5 when the /CS signal ...
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... SCLT3-8BT8 2.5.5 SPI shift register operation selector SPM The input SPM allows the operation of the SPI shift register to be configured for an 8-bit or 16-bit operation. When SPM is set low (COM input state bits and the control bits. When SPM is set high (V 8-bit mode and transfers the eight input state bits in a faster transfer process. ...
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... DIS DT 12/ MSB MSB 14 S > < > Doc ID 15191 Rev 3 SCLT3-8BT8 LSB MSB LSB MSB S M Table 9. DT ...
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... SCLT3-8BT8 Figure 10. SPI shift register data transfer sequence versus SCLT input states /CS=”1” /CS=”1” /CS /CS SCK1 SCK1 SCK1 SCK1 SCK2 SCK2 SCK15 SCK15 SCK16 SCK16 SCK16 SCK16 /CS /CS SCK1 SCK1 2.7 Control bit signals of the SPI transferred data frame 2.7.1 Power bus voltage monitoring ...
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... ON 135 °C typical as shown in OFF OFF OFF OFF Doc ID 15191 Rev 3 SCLT3-8BT8 1ms delay filter 1ms delay filter /UVA /UVA Figure 12 CCON CCON CCON CCOFF ...
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... SCLT3-8BT8 It is supposed such disturbances affect one bit at a time during the SPI frame transfer. EFT burst repetition rate is about 200 µs (5 kHz) and the SPI 16-bit frame should last less than 160 µs. A parity bit on the full byte should be obtained by applying an “exclusive NOR” Boolean operation to the eight logic input states (PC even ...
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... / Doc ID 15191 Rev 3 SPI status Power good Power good 17V 17V 19V 19V + IEC61131-2 level IEC61131-2 level 11V 11V 13V 13V = MISO (non inverting isolator) = MISO (non inverting isolator) ASIC ASIC SCLT3-8BT8 ...
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... SCLT3-8BT8 Table 6. Absolute ratings Symbol Pin MISO LV O /MISO SCK LV I /CS MOSI REF REF I OSC OSC P All DIS T All J Table 7. Thermal resistance Symbol ...
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... Clock duty cycle Minimum logic inputs rise and fall times Logic input voltage Maximum LED output voltage Operating ambient temperature range Operating junction temperature range , Doc ID 15191 Rev 3 SCLT3-8BT8 Value Unit > 500 Ω 1.5 MΩ ...
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... SCLT3-8BT8 Table 9. DC electrical characteristics Symbol Pin Name I IN Input limiting current LIM V IN Low current input voltage LOW Current limiter activation V IN LIM TH voltage V IN, V Clamping voltage state input voltage Input on state threshold TH_ON V IN Input off state threshold ...
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... I 4. Corresponding 1.5 mA 20/33 (1) (continued) Conditions Under voltage alarm R =1.5 MΩ 2.2 kΩ 2.2 kΩ with reference to COM 2.2 kΩ. I Doc ID 15191 Rev 3 Min. Typ. Max. =120 kΩ 1.25 1.27 1.30 - 0.1 1 1.7 = COMs voltage, unless otherwise P SCLT3-8BT8 Unit - ...
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... SCLT3-8BT8 Table 10. SPI serial bus link electrical characteristics Symbol Pin Name t SCK Enable lead time LD t SCK Clock hold time HC t /CS Transfer delay time DT C Input capacitance IN SCK, t /CS, Input filter time constant RC MOSI I Input pull up current IN t MOSI Data setup time ...
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... Test according to standard with schematic described in application section. P versus reference resistance R LIM I (mA) LIM 6 5.5 5 4.5 4 3 (kΩ) 1.5 REF Doc ID 15191 Rev 3 SCLT3-8BT8 (1) Value ± 2.5 ±4 (2) ±1 ± 2.5 ±1 ±15 ± 8 ±15 ± 8 REF ° Unit ...
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... SCLT3-8BT8 Figure 15. Typical limiting current I Figure 16. Relative variation of minimum filter time T temperature T versus junction temperature T LIM I (mA) LIM 2.8 Ω R ref = 15 k with 2 2.7 2.6 2.5 2.4 2.4 2.3 2.3 2.2 2.2 T (°C) 2 (25°C) FT MIN FT MIN 1.15 1.1 1.05 1 0.95 0.9 T (° ...
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... MOSI MOSI /CS /CS SCLT SCK SCK 1 MISO MISO MOSI MOSI /CS /CS = 1Mbps coupler = 0 and C PHA POL Doc ID 15191 Rev 3 SCLT3-8BT8 is connected to the MISO N can be kept open or grounded Case 2: 8-DI and 8-DO SCLT SCK SCK SCK SCK SCK MISO MISO MISO MISO MISO /CS /CS ...
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... Interfacing the SPI section to the I/O controller through optotransistors Figure 18. Opto-couplers connection between dual SCLT circuit and their master bus controller 5V.REG 5V.REG V DD1 SCLT3 - 8 SPI data output 3.2 High speed operation with magnetic isolators Figure 19. Connection of SCLT with a magnetic or capacitive coupler for alarm active in low level Alarm = low ...
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... V C Doc ID 15191 Rev 3 SCLT3-8BT8 SCLT3-8 SCLT3-8 COM COM Combined P Figure withstands ±1 kV surge voltage C Figure 20. With R = 2.2 kΩ, this power C 20. ...
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... SCLT3-8BT8 3.5 Fast transient burst immunity 3.5.1 Considerations on the power section The EFT protection is achieved with the same strategy as ESD and surge protection. An input capacitor C These capacitors play a key role in suppressing front-end electrical stresses. Their capacitance can be about 22 nF (to validate by test for both EFT and RFI tests). ...
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... If the sensor connected to the SCLT input has a drop voltage less than 1 V, this input runs with an on-state threshold equal Reducing the input resistance R SCLT input meets such an operation. 3.8 Dissipation calculation in the SCLT3-8 circuit Table 12. Evaluation of dissipation in the SCLT3-8 Circuit V Regulator ...
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... SCLT3-8BT8 4 Ordering information scheme Figure 23. Ordering information scheme SCLT = Serial output current limiting termination current setting 8 = Eight channels B = EMC Level ± HTSSOP-38 package according to IEC 61000-4-5 Doc ID 15191 Rev 3 Ordering information scheme SCLT 29/33 ...
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... ECOPACK trademark. The SCLT3-8 is packaged in the HTSSOP-38 exposed pad that improves the ground cooling transfer of the input dissipation to the printed board. Increasing the copper surface helps to reduce any hot point on the board. Table 13. ...
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... SCLT3-8BT8 Figure 24. SCLT3-8BT8 footprint (dimensions in mm) 0.5 0.60 7.10 4.50 6.60 0.3 Doc ID 15191 Rev 3 Package information 1.30 3.30 31/33 ...
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... Ordering information 6 Ordering information Table 14. Ordering information Order code SCLT3-8BT8-TR SCLT3-8BT8 7 Revision history Table 15. Document revision history Date 17-Nov-2008 04-May-2009 02-Nov-2009 32/33 Marking Package SCLT3-8BT8 HTSSOP-38 SCLT3-8BT8 HTSSOP-38 Revision 1 Initial release. 2 Updated mechanical data for package HTSSOP-38. Updated parameters in 3 Figure 15, ...
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... SCLT3-8BT8 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...