PTC04-DB-HALL06

Daughter Board for Melexis PTC devices

PTC04-DB-HALL06

Page 13 of 14

Data Sheet

Rev. 2.0 (Preliminary)

April 15

1.5.2.

J2, J3, J4 and J5

– select pull-up

These jumpers are used to select the pull-up resistor for the outputs of die A and B:



JP2: Pull-up selection for OUT1 die A



JP3: Pull-up selection for OUT2 die A



JP4: Pull-up selection for OUT1 die B



JP5: Pull-up selection for OUT2 die B

Place the jumper between:



Pin 1 and 2  select 5K6 Pull-up



Pin 3 and 2  select 10K Pull-up

The selection between VDD and Vbat is done by a relay on software level.

When Vbat is set to 0V one can select a pull-down

1.5.3.

CON3 and CON21

– configure MuPET circuit

The MuPET circuit on the daughter board is used to convert the clock and data of the UART to a single

wire protocol called MuPET.

CON3 and CON21 are used to configure the resistors of the MuPET circuit in function of the output

resistance on the sensor/module.



Pin 1 and 2  select 100

Ω



Pin 3 and 4  select 150

Ω



Pin 5 and 6  select 220

Ω



Pin 7 and 8  select 1000

Ω

1.5.4.

J1

– unable/disable PSI5 circuit

J1 enables the driver circuit used for the PSI5 communication protocol.

As the PSI5 protocol is a current protocol it consumes some power which results in additional heating up

of the PTC04. This heating thus not generate any issue for the PTC04 programmer when mounted in a

well-ventilated rack. But when the PSI5 feature is not used we do advise to disable the circuit remove the

jumper of J1.