ATA6621-PGQW Atmel, ATA6621-PGQW Datasheet
ATA6621-PGQW
Specifications of ATA6621-PGQW
Available stocks
Related parts for ATA6621-PGQW
ATA6621-PGQW Summary of contents
Page 1
... The output current of the regulator can be boosted by using an external NPN transis- tor. This combination makes it possible to develop simple, but powerful and cheap, slave nodes in LIN bus systems. ATA6621N is designed to handle the low speed data communication in vehicles, for example, in convenience electronics. Improved slope control at the LIN driver ensures secure data communication kBaud ...
Page 2
... CC 9 Receiver RXD WAKE Time-out TXD 1 Debounce GND CC 17 TEMP 16 GND ATA6621N 2 Wake-up Bus Timer Slew Rate Control TXD Timer Control Unit Standby Mode Time Internal Testing Watchdog Unit MODE TM PTRIG Normal Mode Filter Short Circuit and Overtemperature Protection Normal Mode 5V ± ...
Page 3
... Chip temperature output pin; if not needed connect to GND 18 PVCC 5V regulator sense input pin 19 VCC 5V regulator output/driver pin 20 VS Battery supply Backside Heat slug is connected to GND (pin 5) 4887I–AUTO–09/ ATA6621N PTRIG 2 14 MLP NTRIG 3 13 0.65 mm pitch 20 lead WAKE 4 12 GND ATA6621N MODE TM WD_OSC NRES TXD 3 ...
Page 4
... This is the sense input pin of the 5V voltage regulator. For normal applications (that is, when only using the internal output transistor), this pin is connected to the VCC pin external boosting transistor is used, the PVCC pin must be connected to the output of this transistor, its emitter terminal. ATA6621N 18V. After switching on VS, the IC starts with the S voltage ...
Page 5
... A pull-up current source with typically 10 µA is implemented. If you don’t need a local wake-up in your application, connect pin WAKE directly to pin VS. 4887I–AUTO–09/09 regulator is also 50 mA, but the V CC ATA6621N > 6 ms, the DOM . The AC characteristics can 0V), RXD is switched off. ...
Page 6
... In Silent mode, the transmission path is disabled. Supply current from V ATA6621N 6 24). For debugging your software you can connect pin MODE to 5V and the watch- ...
Page 7
... LIN and pin VS is present. The Silent mode voltage tolerance is sufficient to run the internal timers of the microcontroller. The undervoltage reset is now V switched to low and the ATA6621N changes state to Pre-normal mode. A falling edge at pin LIN followed by a dominant bus level maintained for a certain time period (t ) results in a remote wake-up request ...
Page 8
... Figure 3-3. LIN Bus TXD RXD VCC NRES ATA6621N 8 LIN Wake-up Waveform Diagram from Silent Mode VLIN < 0 High Bus wake-up filtering time t bus Silent mode Regulator Wake-up time EN Node in Silent mode If undervoltage, switch to Pre-normal Mode Pre-normal Mode High Low Pre-normal mode ...
Page 9
... The remote wake-up request is indicated by a low level at pin RXD to interrupt the microcon- troller (see With EN high you can switch directly from Silent mode to Normal mode. In the application where the ATA6621N supplies the microcontroller, wake-up from Sleep mode is only possible via LIN or pin WAKE. If the device is switched into Sleep mode, V reset at pin NRES ...
Page 10
... Pre-normal Mode At system power-up the device automatically switches to Pre-normal mode. The voltage regula- tor is switched low for t off and the watchdog is active. The ATA6621N stays in this mode until EN is switched to high Battery Pre-normal mode. During this mode the TXD pin is an output. ...
Page 11
... The wake-up request flag (signalled on pin RXD) as well as the wake-up source flag (signalled on pin TXD) are reset immediately, if the microcontroller sets pin EN to high (see ure 3-3 on page If the ATA6621N is in Sleep mode or Silent mode and the voltage at the LIN Bus falls to a value lower than VLINL < V remains higher than 0.6 the pins RXD and TXD (see 4887I– ...
Page 12
... Pin EN provides a pull-down resistor to force the transceiver into recessive mode disconnected. • Pin RXD is connected with • Pin TXD provides a pull-up resistor to force the transceiver into recessive mode if TXD is disconnected. ATA6621N 12 Wake Up from Sleep/Silent Mode at an Insufficient Falling Edge at Pin LIN VLIN < and S VLIN > ...
Page 13
... The main power dissipation of the IC is created from the V needed for the application. In Figure 3-8 on page 14 Figure 3-7. NRES 4887I–AUTO–09/09 you see the safe operating range of the ATA6621N. VCC Voltage Regulator: Ramp Up and Undervoltage VS 12V 5.5V 3V VCC 5V ...
Page 14
... For example, with an external resistor of R watchdog come out as follows 12.5 µs due OSC t = 3922 800 840 157 nres After every reset the watchdog always starts with the lead time. ATA6621N 14 Power Dissipation: Safe Operating Area versus V Voltage V at Different Ambient Temperatures with ...
Page 15
... To avoid false 2 > 3 µs. This slope serves to trigg . A triggering signal during the closed window 10 > 3 µs trigg and t can also vary by ±20 the microcontroller has to provide is cal- wd maximum) and (t minimum plus 12.6 ms ATA6621N , the 2 1 Watchdog Reset t = 1.9 ms nres t 2 minimum ...
Page 16
... The sensor itself is built out of three diodes which are supplied by an internal BIAS current in Pre-normal mode and Normal mode. The typical voltage 27° typical negative temperature coefficient µA current source is switched off. Figure 3-10. Temperature Monitor ATA6621N 16 = 14.2 ms (±15 application with R wd Table of Watchdog Timings ...
Page 17
... –40 –150 –0.3 I –2 NRES –40 –150 –0.3 ±6 ±5 ±2 ±1 T – – – thjc R 35 thja 150 165 150 165 10 ATA6621N Max Unit + +40 V +100 +6 +60 V +100 6 +150 °C +150 °C +125 °C 10 K/W K/W 170 °C 170 ° ...
Page 18
... Low-level voltage input 4.2 High-level voltage input 4.3 Pull-down resistor V EN 4.4 Low-level input current Type means 100% tested 100% correlation tested Characterized on samples Design parameter ATA6621N 18 Pin >V – 0.5V Bat < 14V (25°C to 125°C) < 14V (25°C to 125° LIN = 0. ...
Page 19
... D3 I –50 VCC I –200 –130 VCCs C 1.8 2.2 load V 4.4 4.8 thunN Vhys 30 thun t 300 VCC VCC 4.65 5.35 nor V VS VCC 5.1 low – 200 D V 3.9 4.4 thunS Vhys 40 thun I –200 –130 VCCs ATA6621N Unit Type µ µ µ ...
Page 20
... Receiver input hysteresis V HYS Wake detection LIN 9.5 High-level input voltage Wake detection LIN 9.6 Initializes a wake-up signal Low-level input voltage *) Type means 100% tested 100% correlation tested Characterized on samples Design parameter ATA6621N 20 Pin = 7V = 500 = 18V = 500 = 7V = 1000 = 18V = 1000 = 125° ...
Page 21
... D1 0.396 D2 0.581 t SLOPE_fall 3.5 22.5 t SLOPE_rise t 60 130 200 WAKE t rx_pd t –2 +2 rx_sym V_H 3.5 PTRIG V_L 1.5 PTRIG Rpd PTRIG 250 600 Rpu NTRIG ATA6621N Unit Type* µs A µs A µ µs A µ RXD 6 µs A µ ...
Page 22
... Mode Input Pin 17.1 Low-level voltage input 17.2 High-level voltage input High-level leakage V MODE 17.3 current V MODE *) Type means 100% tested 100% correlation tested Characterized on samples Design parameter ATA6621N 22 Pin = –250 µ 120 k OSC = ±3 µA = ±3 µA = ±3 µA < 27V, V ...
Page 23
... TH Rec(max Dom(max) (Transceiver supply of transmitting node) TH Rec(min) TH Dom(min) RXD (output of receiving node1) t rx_pdf(1) RXD (output of receiving node2) 4887I–AUTO–09/ Bit Bit t Bus_dom(max) LIN Bus Signal t Bus_dom(min) t rx_pdr(2) ATA6621N t Bit t Bus_rec(min) Thresholds of receiving node1 Thresholds of receiving node2 t Bus_rec(max) t rx_pdr(1) t rx_pdf(2) 23 ...
Page 24
... Figure 5-2. Application Circuit V Battery 100 nF 10 µ Microcontroller EN PTRIG NTRIG RXD TXD RESET GND ATA6621N 24 22 µF 100 ATA6621N PTRIG 2 NTRIG MLP 0.65 mm pitch 33 k WAKE 20 lead 4 GND 5 Wake-up switch Master node pull- debug 16 MODE WD_OSC NRES 12 TXD 11 10 220 pF ...
Page 25
... V CC Microcontroller EN PTRIG NTRIG RXD TXD RESET GND 4887I–AUTO–09/09 22 µF 100 nF + MJD31C + 2.2 µ ATA6621N PTRIG 2 NTRIG MLP 0.65 mm pitch 33 k WAKE 20 lead 4 GND 5 Wake-up switch ATA6621N Master node pull- debug 16 MODE WD_OSC NRES 12 TXD 11 10 220 pF 25 ...
Page 26
... Extended Type Number ATA6621N-PGPW ATA6621N-PGQW 7. Package Information Package: QFN Exposed pad 3.1 x 3.1 Dimensions in mm Not indicated tolerances ± 0. Drawing-No.: 6.543-5094.01-4 Issue: 1; 19.12.02 ATA6621N 26 Package Remarks QFN20 Pb-free, 1.5k, taped and reeled QFN20 Pb-free, 6k, taped and reeled 0.9 ±0.1 +0 0.05 -0.05 ...
Page 27
... Section 3.15 “Fail-safe Features” on page 11 changed Section 3.18 “Temperature Monitor at Pin TEMP” changed Table “Electrical Characteristics” numbers 10.4, 13.2 and 15.3 on pages changed Table “Electrical Characteristics” numbers 17.1, 17.2 and 17.3 on page 22 added Section 6 “Ordering Information” on page 25 changed ATA6621N 27 ...
Page 28
... Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL’S TERMS AND CONDI- TIONS OF SALE LOCATED ON ATMEL’S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT ...