M-ETK-T1.0 + M-ETK-AB1.0B

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

8

24

40

mA

Operating current

IBatt

UBatt = 12 V;

no load from ECU;

T = 20 °C

150

250

350

mA

Power dissipation

PBatt

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

1.8

3

4.2

W

Power dissipation

PBatt

UBatt = 12 V;

I = 500 mA at pin VDDSTBY;

I = 80 mA at pin VDDPSTBY;

T = 20 °C

2.9

4.1

5.3

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 M-ETK 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 M-ETK will accept power supply voltage dips (for additional details of 3 V low voltage operation, see ISO standard 16750).
Maximum Inrush Current

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

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

700 mA / 5 ms

< 40 s

18 A / 60 µs

Power Supply Pin Assignment

Pin

Signal

Direction

Comment

1

VDDPSTBY
(3.3 V supply,
80mA max.)

Output

Permanent power supply of ECU DAP Interface, 3.3 V

2

VDDSTBY

(1.3 V supply,
500mA max.)

Output

Permanent power supply of ECU EDRAM

3

GND

Input

Power Ground

4

CAL_WAKEUP

Output

Switch to UBatt. ECU wake-up signal
(for measurement preparation)

5

Ubatt2

Input

Vehicle battery

6

Ubatt1

Input

Vehicle battery

Microcontroller Interface (adapter dependent)

Parameter

Symbol

Condition

Min

Typ

Max

Unit

ECU Standby RAM Output Voltage

VDDSTBY

max 500 mA load

0.94

1

1.04

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

VDDP

 

ECU on

2.67

2.77

2.89

V

ECU off

2.44

2.56

2.89

V

abs. max.

 

 

5.50

 

IDDP

VDDP 3.3 V

 

 

800

mA

ECU Standby RAM Supervision Voltage

VDDSTBY /VDDSTBY_SENSE

IDDSTBY

VDDSTBY ­

1.04

1.07

1.10

V

VDDSTBY ¯

1.03

1.06

1.09

V

VDDSTBY 1.0 V

 

 

50

mA

Test Characteristics

Parameter

Symbol

Condition

Min

Typ

Max

Unit

Start-up Time 1 1)

tstartup1

UBatt = 12 V
Standby
configured

ECU_VDDP goes high

0

5

10

ms

Start-up Time 2 1)

tstartup2

UBatt goes high

 

10

20

50

s


1) PORESET is not pulled low during M-ETK start up time.

SWD Timing Characteristics

The M-ETK supports the 2-pin SWD mode: one data pin (direction via protocol), one clock pin.

Parameter

Symbol

Value SR6X7[ns]

Value SR6P7 [ns]

Comment

SWCLK Clock Period (typ.)

tCLK

14.31)

8.02)

ETK --> Target

SWDIO Set-Up Time

tSU

4.0

2.3

ETK --> Target

SWDIO Hold Time

tH

1.5

2.3

ETK --> Target

SWDIO Clock-to-Out Time

tCO

12.4

11.5

Target --> ETK

SWDIO Output Hold Time

tOH

4.3

3

Target --> ETK

SWDIO data unstable window

 

 

3

 

1) : @ 70 MHz SWD Clock Frequency

2): @ 125 MHz SWD Clock Frequency

 

 

Aurora Trace Timing Parameter

Parameter

Value

Unit

Signal Impedance [Ohm]

Clock

100

MHz

100 (differential)

Data rate DATA[3...0]

(max)

3.125

Gbit/s

100 (differential)

Electrical Characteristics

ECU Interface Connector SWD / JTAG Interface

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 (TCK)

XO1)

0.4

2.8

3.3

-

-

5.5

+705 / +495

35

DAP1 (TMS)

IXO1)

0.4

2.8

3.3

0.8

2

5.5

-3310 / -2390

35

DAP2 (TDO)

IXO1)

0.4

2.8

3.3

0.8

2

5.5

+3310/ -2390

35

RESERVED (TDI)

XO1)

0.4

2.8

3.3

0.8

2

5.5

+10 / -10

35

/TRST

XO2)

0.6

2.4

3.3

-

-

6.5

-705 / -569

21

/RESETOUT

IXOD3)

0.7

-

-

0.8

2

6.5

+21 / -20

21

/PORESET

IXOD3)

0.7

-

-

0.8

2

6.5

+21 / -20

25

WDGDIS

XO2))

0.6

2.4

3.3

-

-

6.5

+10 / -10

21

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

 

1) max 16mA
2) max 24 mA
3) max 0.2 A

ECU Interface Connector Pin Assignment

Pin

DAP Mode

Direction

Comment

1

GND

Power

Signal Ground

2

DAP0

Output

DAP signal

3

/TRST

Output

DAP signal

4

DAP2

Bidir

DAP signal

5

DAP1

Bidir

DAP signal

6

Reserved (TDI)

Bidir

Reserved

7

WDGDIS

Output

Watchdog disable Signal

8

VDDP (Sense)

Input

Sense for Switched power supply of ECU (ignition)

9

/ESR0

Bidir

ECU Reset signal (open drain) for Reset assertion and supervision

10

/PORESET

Bidir

ECU Power On Reset signal (open drain) for Reset assertion and supervision

ECU Interface Connector Aurora Trace

Signal

Pin Type

VID (min) [mV]

VID (max) [mV]

VOD (max) [mV]

Clock-P/-N

XO

-

-

490

DATA[3...0]

I

140

1250

-

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

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]

AUR_RESERVED

XO 1)

0.6

2.4

3.3

-

-

6.5

+159 / +99

24

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

1) max 24 mA

ECU Interface Connector Aurora Trace Pin Assignment

Pin

Signal

Direction

Comment

1

GND

-

Signal Ground

2

GND

-

Signal Ground

3

Data1-N

Input

do not use

4

Data0-P

Input

Aurora Data Lane 0

5

Data1-P

Input

do not use

6

Data0-N

Input

Aurora Data Lane 0

7

GND

-

Signal Ground

8

GND

-

Signal Ground

9

Data2-P

Input

do not use

10

GND

-

Signal Ground

11

Data2-N

Input

do not use

12

Clock-N

Output

Aurora Clock

13

GND

-

Signal Ground

14

Clock-P

Output

Aurora Clock

15

Data3-N

Input

do not use

16

GND

-

Signal Ground

17

Data3-P

Input

do not use

18

-

-

not connected

19

GND

-

Signal Ground

20

AUR_Reserved

Output

Aurora CRC error