Hardware specifications BR_XETK-S3.0

Ambient conditions

Item

Characteristics

Operating temperature range

- 40 °C to +110 °C

- 40 °F to +230 °F

Storage temperature range(without packaging)

0 °C to +50 °C

+32°F to +122 °F

Max. relative humidity
(non-condensing)

95%

Max. altitude

max. 5000 m/ 16400 ft

Degree of contamination
(IEC 60664-1, IEC 61010-1)

2

Protection rating (IEC 60529)

Determined by installation in ECU

Overvoltage category

(mains supply)

II

Note  

Maximum Voltage to Earth or to any accessible parts (e.g. ECU Housing, Vehicle Chassis): 60V DC / 30V AC.

Inside the ECU housing the maximum. temperature is specified with 110°C (230 °F), still air. Outside of the ECU housing the maximum ambient temperature is assumed to be 105°C(221 °F) at 1m/s airflow.

Note  

It is recommended to mount the BR_XETK-S3.0 via gap pad and mounting bracket directly to the ECU housing.

Maximum thermal Resistance (Rth) BR_XETK-S3.0 glued mounting bracket surface to ambient air [ K/W ].

Rth = ( 125 - 8 - | T amb | ) / 1.95 K/W

Tjmax = 125°C (257°F)

Electrical data

Parameter

Symbol

Condition

Min

Typ

Max

Unit

Permanent power supply

(vehicle battery)

UBatt

Vehicle usage 1)

6

12

36

V

[all values ±0%]

Cranking voltage

UBatt

< 3 seconds

3

 

 

V

Standby current

ISTBY

UBatt = 12 V; ECU off;

no load from ECU;

T = 20 °C

30

40

50

mA

Operating current

IBatt

UBatt = 12 V;

no load from ECU;

T = 20 °C

90

135

250

mA

Power dissipation

PBatt

UBatt = 12 V;
I=0mA at pin VDDSTBY;
T = 20 °C

 

1.62

 

W

Power dissipation

PBatt

UBatt = 12 V;

I = 500 mA at pin VDDSTBY;

I = 80 mA at pin VDDPSTBY;

T = 20 °C

   2.7  

W

Fuse in the ETK UBatt supply line.

Only required if the power supply or ECU is not protected accordingly.

MINI, 2 A 58 V DC

(Littelfuse 0997002.WXN)

Overvoltage category
(AC mains supply)

 

 II        

1) The BR_XETK-S3.0 implements reverse voltage protection in the same range and may be used only with central load dump protection.

24 V vehicles require UBatt disturbing pulse reduction to 12 V vehicle system.

12 V vehicles don’t require special disturbing pulse reductions.

Note  

The BR_XETK-S3.0 will accept permanent power supply voltage dips (for additional details of 3 V low voltage operation, see ISO standard 16750).

Note  

Maximum Voltage to Earth or to any accessible parts (e.g. ECU Housing, Vehicle Chassis): 60V DC / 30V AC.
Maximum inrush current

It is highly recommended that the BR_XETK-S3.0 be connected to a permanent power supply. When this is not possible, or the BR_XETK-S3.0 must be powered off and back on in short intervals, time is required to reactivate the inrush limiting circuit of the BR_XETK-S3.0.

If the time between powering the ETK off and on is less than 40 seconds a high current peak can occur. If the above-mentioned fuse is used, this inrush current will not trigger the fuse. If other protection mechanisms are in place, the inrush current must be considered in the ECU design.

Time Between Powering Off and On

Inrush Current Pulse ( UBatt = 12 V)

> 40 s

800 mA / 5 ms

< 40 s

18 A / 60 µs

Microcontroller interface

BR_XETK-S3.0A

Parameter

Symbol

Condition

Min

Typ

Max

Unit

ECU Standby RAM Output Voltage

VDDSTBY

max 500 mA load

1.23

1.3

1.34

V

VDDPSTBY
Output Voltage

VDDPSTBY

max 80 mA load

3.14

3.3

3.46

V

Cal_Wakeup
Output Voltage

CAL_WAKEUP

UBatt = 6 - 36 V;
load = 0 - 50 mA

UBatt-1V

 

UBatt

V

ECU Power Supply Supervision Voltage

(3.3 V selected)

VDDP

 

ECU on

2.70

2.80

2.89

V

ECU off

2.44

2.54

2.66

V

abs. max.

 

 

5.50

 

IDDP

VDDP 3.3 V

 

 

200

mA

ECU Standby RAM Supervision Voltage

VDDSTBY /VDDSTBY-BY_SENSE

IDDSTBY

VDDSTBY ­

1.02

1.12

1.22

V

VDDSTBY ¯

1

1.1

1.2

V

VDDSTBY 1.25 V

 

 

73

mA

BR_XETK-S3.0C

Parameter

Symbol

Condition

Min

Typ

Max

Unit

ECU Standby RAM Output Voltage

VDDSTBY

max 500 mA load

0.9

0.95

1

V

VDDPSTBY
Output Voltage

VDDPSTBY

max 80 mA load

3.14

3.3

3.46

V

Cal_Wakeup
Output Voltage

CAL_WAKEUP

UBatt = 6 - 36 V;
load = 0 - 50 mA

UBatt-1V

 

UBatt

V

ECU Power Supply Supervision Voltage

(3.3 V selected)

VDDP

 

ECU on

2.70

2.80

2.89

V

ECU off

2.44

2.54

2.66

V

abs. max.

 

 

5.50

 

IDDP

VDDP 3.3 V

 

 

200

mA

ECU Standby RAM Supervision Voltage

VDDSTBY /VDDSTBY-BY_SENSE

IDDSTBY

VDDSTBY ­

0.84

0.87

0.90

V

VDDSTBY ¯

0.82

0.85

0.88

V

VDDSTBY 0.95 V

 

 

73

mA

Power-on delay of ECU reset

Parameter

Symbol

Condition

Min

Typ

Max

Unit

Reset delay 1

Delay of ECU reset through ETK without transferring the FPGA (UBatt present, VDDP will be switched on)

tReset1

UBatt = 12 V

ECU_VDDP goes

high

3

5

20

ms

Reset delay 1

max. delay of ECU reset through ETK (UBatt and VDDP will be switched on)

tReset2

UBatt goes

high

100

 

240

ms

ECU interface connector

Signal

Pin Type

VOL

(max)

[V]

VOH

(min)

[V]

VOH

(max)

[V]

VIL

(max) [

V]

VIH

(min)

[V]

VIH

(max)

[V]

Leakage current

(min) / (max)

[mA]

Additional load by ETK 1) (typ) [pF]

DAP0

XO1)

0.7

2.3

3.3

-

-

-

+631

10

DAP1

IXO1)

0.7

2.3

3.3

0.8

2

5.5

+5000 / +3340

10

DAP2

IXO1)

0.7

2.3

3.3

0.8

2

5.5

+5000 / +3340

10

RESERVED

XO1)

0.7

2.3

3.3

-

-

-

+20 / -20

10

/TRST

XO2)

0.7

2.3

3.3

-

-

-

+20 / -20

10

/ESR0

IXOD3)

0.7

-

-

0.8

2

5.5

+25 / -20

22

/PORST

IXOD3)

0.7

-

-

0.8

2

5.5

+25 / -20

22

WDGDIS

XO2))

0.7

2.3

3.3

-

-

-

+20 / -20

10

DAPE0

XO2))

0.7

2.3

3.3

-

-

-

+631

10

DAPE1

IXO1)

0.7

2.3

3.3

0.8

2

5.5

+5000 / +3340

10

DAPE2

IXO1)

0.7

2.3

3.3

0.8

2

5.5

+5000 / +3340

10

GATE_PROST 

I

0.7

2.3

3.3

0.8

3

3.8

+165

15

TDI

XO2))

0.7

2.3

3.3

-

-

-

+20 / -20

10

Pin Type:
I: Input, X: Tristate, O: Output, OD: Open Drain

 

1) Adapter cable and Samtec connector not considered; PCB 1 pF/cm
2) max 12 mA
3) max 0.2 A

DAP timing characteristics

The BR_XETK-S3.0 supports two DAP modes:

  • 2-pin DAP mode: one data pin (direction via protocol), one clock pin

  • 3-pin DAP mode: two data pins (bidirectional, direction via protocol), one clock pin

The 2-pin DAP mode is the BR_XETK-S3.0 DAP interface default mode.

Note  

DAP timing parameters in this chapter refer to the DAP interface (CON2) of the BR_XETK-S3.0. The DAP wiring to the ECU (ETAM8) must be taken account additionally.

All timings are measured at a reference level of 1.5 V.

2-pin DAP mode

Parameter

Symbol

Value [ns]

Comment

DAP0 Clock Period
(ETK --> Target)

tCLK

10

100MHz DAP Clock

20

50 MHz DAP Clock Frequency

DAP1 Set-Up Time
(ETK --> Target)

tSU

4

 

DAP1 Hold Time
(ETK --> Target)

tH

2

 

DAP1 Clock-to-Out Time (Target --> ETK)

tCO

~

Undetermined, ETK automatically determines optimum sampling point

3-pin DAP mode

Parameter

Symbol

Value [ns]

Comment

DAP0 Clock Period
(ETK --> Target)

tCLK

 

 

6.25

160MHz DAP Clock Frequency

10

100 MHz DAP Clock Frequency

20

50 MHz DAP Clock Frequency

DAP1 Set-Up Time
(ETK --> Target)

tSU

4

 

DAP1 Hold Time
(ETK --> Target)

tH

2

 

DAP1 Clock-to-Out Time (Target --> ETK)

tCO

~

Undetermined, ETK automatically determines optimum sampling point

Mechanical data

The reference measure for all drawings is millimeters.

Top view

Item

Dimension [mm]

Tolerance [mm]

Dimension [in]

Tolerance [in]

A

2.50

+/- 0.1

 0.098 +/- 0.004

B

11.25

+/- 0.1

 0.443 +/- 0.004

C

21.00

+/- 0.2

 0.827 +/-0.008

D

29.00

+/- 0.2

1.142

+/-0.008

E

33.00

+/- 0.2

1.299

+/-0.008

F

35.50

+/- 0.2

1.398

+/-0.008

G

2.50

+/- 0.1

0.098

+/- 0.004

H

28.50

+/- 0.2

1.122

+/-0.008

I

31.00

+/- 0.2

1.220

+/-0.008

J

2.30

+ 0.1 /- 0.0

0.091

+ 0.007 / - 0.000

K

1.00

+/- 0.1

0.039

+/- 0.004

Side view

Item

Dimension [mm]

Tolerance [mm]

Dimension [in]

Tolerance [in]

A

 2.00 + 0.0 /- 0.2 0.079 + 0.000 / - 0.008

B

 1.60 + 0.16 /- 0.16 0.063 + 0.006 / - 0.006

C

 .510 + 0.0 /- 0.2 0.201 + 0.000 / - 0.008