ATA6621-EK Atmel, ATA6621-EK Datasheet

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... Atmel ATA6621 2 PTRIG 6 Not connected 8 Not connected 10 Not connected 16 GND 17 TEMP Figure 1-1. ATA6621/22/24/26 Development Board ® ATA6621/22/24/26 (ATA6621-EK, Table 1-1: ATA6622/24/26 GND GND GND INH KL_15 GND Atmel ATA6621 Atmel ATA6621N Atmel ATA6622 Atmel ATA6622C Atmel ATA6624 Atmel ATA6624C Atmel ATA6626 ...

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... Sleep Mode and Silent Mode guarantee a very low current consumption. This document has been developed to give the user an easy start with the development board of the Atmel ATA6621/22/24/26. For more detailed information about the use of these devices themselves, refer to the corresponding datasheets. ...

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... For the quick start it is sufficient to generate a square-wave signal with 75Hz at pin NTRIG or PTRIG for the Atmel ATA6621 or with f = 50Hz at pin NTRIG for the Atmel ATA6622/24/26 (this is recommended only for testing purposes). In order to check that the watchdog is triggered in the expected way, the reset pin NRES can be monitored until a continuous high level is available ...

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... NRES pin disappears and is defined as lead time t The timing basis of the watchdog is provided by the internal oscillator, whose time period t is adjustable via the external resistor R3 at the pin WD_OSC. For the Atmel ATA6621, the voltage at this pin is 2.5V, for the Atmel ATA6622/24/ 1.23V (see through ings are also different ...

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... Figure 2-1. Timing Sequence with R3 = 51k at the Atmel ATA6621 Undervoltage Reset t = 10ms reset NRES NTRIG PTRIG For the Atmel results in the different timing sequence shown in Figure 2-2. Timing Sequence with R3 = 51k at the Atmel ATA6622/24/ 3.3V/5V CC Undervoltage Reset t reset NRES NTRIG If you want to change the watchdog times mentioned above it is only necessary to change the value of the external resistor R3 (refer to the corresponding datasheet). 4970B– ...

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... The output has an internal pull-up resistor with typ VCC. The output is short-circuit protected. 2.5 Temp Pin (TEMP) (Atmel ATA6621 Only) Besides the internal temperature monitoring of the voltage regulator, an additional sensor measures the junction temperature and provides a linearized voltage at the TEMP pin. ...

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... The NRES pin switches to low if the watchdog is not triggered correctly (see page In the ATA6621 the Reset output is a push-pull state supplied by the VCC voltage. In the Atmel ATA6622/24/26 the Reset output is an open drain output implemented with a sin- gle MOS transistor which is switched on in case of a VCC undervoltage or if the watchdog is not triggered correctly ...

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... It is not recommended to exceed this S limit, because the transistor could be damaged as a result of overtemperature higher out- put current is required, additional cooling of the external transistor has to be ensured (see Figure Figure 3-1. Atmel ATA6621/22/24/26 8 3-2, Figure 3-3 and Figure 3-4 on page Boosting the Voltage Regulator 9) ...

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... 80K/W (No Additional Cooling) max S thJA 150 versus 50K/W (Additional Cooling) max S thJA versus 20K/W (Additional Cooling) max S thJA Atmel ATA6621/22/24/ different coolings or thermal resistances S = 25˚ 85˚ 125˚ ( 25˚ 85˚C = 125˚ ( 25˚ 85˚ 125˚ ( the voltage max ...

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... Figure 3-5 the Atmel ATA6621. The supply voltage V than V Figure 3-5. Figure 3-6. Atmel ATA6621/22/24/ Figure 3-10 on page 12 show some typical operating characteristics measured at (reverse battery protection). The external circuitry is shown in bat Output Voltage PV versus Battery Voltage V CC ATA6621 with External Boosttransistor MJD31C ...

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... Figure 3-7. Figure 3-8. 4970B–AUTO–03/11 Atmel ATA6621/22/24/26 Load- transient Response Ch1: I OUT Startup Response Ch1 Ch2 Ch2 ...

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... Figure 3-9. Figure 3-10. Output Voltage PV Atmel ATA6621/22/24/26 12 Switching from Silent to Normal Mode Ch1: NRES, Ch2: PV versus Temperature at Different Load Currents CC 5,0 5 5,0 4 5 20mA OUT 5 100mA OUT 5 Temperature (° OUT 4970B–AUTO–03/11 ...

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... GND by replacing resistor. R12 is not mounted. Atmel ATA6621/22/24/26 R10 R10b 0 T1 (ATA6622/24/26) MJD31C TEMP C7 R12 47k 1nF MODE MODE ATA6621/ R3 WD_OSC ATA6622/ 13 ATA6624 51k NRES ATA6626 12 TXD (ATA6622/24/26) R11 47k Revision 2.0 / 2.1 KL_15 D3 LL4148 100nF R1 4.7k R9 PVCC 10k INH LIN C6 220pF ATA6621-EK ATA6622-EK ATA6624-EK ATA6626-EK 13 ...

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... Figure 4-2. Figure 4-3. Atmel ATA6621/22/24/26 14 Atmel ATA6621/22/24/26 Board Component Placement; Top Side, Top View Atmel ATA6621/22/24/26 Development Board; Top Side, Top View 4970B–AUTO–03/11 ...

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... Figure 4-4. 4970B–AUTO–03/11 Atmel ATA6621/22/24/26 Atmel ATA6621/22/24/26 Development Board; Bottom Side, Top View (as if PCB Were Transparent) 15 ...

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... To show just how easy develop a LIN-based application with the development board for the Atmel ing of the Atmel ATA6621 and the microcontroller ATmega88, a flasher controlled via the LIN bus. The LIN interface of the slave is implemented with the Atmel ATA6624 and the control of the flasher as well as the protocol handling is done by the Atmel ATmega88 microcontroller ...

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... Furthermore, the flasher produces some glitches, so that there are some capacitors needed in order to block the 12V power supply. Figure 5-2. 4970B–AUTO–03/11 Atmel ATA6621/22/24/26 A Simple Application Using the Development Board for the Atmel ATA6624 (Photograph) 17 ...

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... Revision History Please note that the following page numbers referred to in this section refer to the specific revision mentioned, not to this document. Revision No. 4970B-AUTO-03/11 Atmel ATA6621/22/24/26 18 History ATA6626 added C Versions added 4970B–AUTO–03/11 ...

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