PTC04-DB-HALL06

Daughter Board for Melexis PTC devices

REVISION 7 – 20 December 2021

Datasheet

Page 10 of 23

3901290014503

Daughter Board for Melexis PTC devices

2.3.1. Digital DB Connector (40 Pins)

Mainly, the digital connector is meant to expand the programmer to extra needs. Address lines A0 -A7

together with the Map Select Lines F8-FF allows to direct access an area of 2 K. Examples would be adding a

simple addressed I/O register by using the selection lines. If more complexity is needed, a full FPGA can be

mounted on the DB board

Pins

Names

Description

1 – 8

A0 – A7

Address lines

9 – 16

D0 – D7

Data Lines active during Rd or Wr signals

17

Rd

Read: A negative pulse will indicate a sampling of the data on the Data Bus

18

Wr

Write: A Negative pulse will indicate when data is available on the Data Bus

20

Reset

This signal goes low by powering the PTC or by pressing the reset button. This line can be

pulled low by application. Check firmware documentation for resetting by software.

21-22

SCL / SDA

I2c Bus

23-30

F8,F9,…,FF

CS lines when the address areas are accessed

31-38

Port E

Note: These pins are limited to 5 Volt input\output!!!! The full Port E of the Atmega core is

mounted to these pins. This allows us to use advanced features like PWM, UARTS, Time

Measurements, etc…. By using firmware that supports these, functions, application specific

requirements can be fulfilled.

39

DGND

Digital Ground

40

+5V Digital

5 Volt Digital Supply. Maximum current to get out of this supply: 250mA

Note: All the pins are limited to 5 Volt input\output!!!! However, there are Protections, please take precautions in order

to avoid damage of the main board.

2.3.2. Analog DB Connector (48 Pins)

Mainly, the analog connector provides all the analog signals and measure possibilities.

Pins

Names

Description

28,32,36

PPS 1-3

Output of the Programmable Supplies

40

PPS 4

Output of the Fast DAC Programmable Power Supply

27,31,35,39

Isense_PP1-4

Outputs (Driver outputs before Rsens) for current evaluations. These outputs

could be used to connect to the analog comparators in order to create fa st

digital signals based on current.

2,4,6,8

ExtMeas1-4Pos

There are 4 differential inputs for making measurements

10,12,14,16

ExtMeas1_4Neg

The negative inputs of ExtMeas1-4Pos

17,19,21,23

Shtd_PPS1-4

Outputs that shows the status of the Drivers. Signals are meant to connect LED's

to put the front panel

43,44,47,48

AnaComp0-3

Input (limited to 5V) See *Note.

Fast Level comparators in order to remove time consuming measurement

18

+35V_Supply

Supply to extend the daughter board with some extra drivers

24

+2.5V Ref

Output of internal reference

All other

AGND

Analog Ground

Note: All the pins are limited to 35 Volt input\output!!!! However, there are Protections, please take precautions in

order to avoid damage of the main board.

* Note: Some pins are protected and limited to 5 Volt!!!! However, there are Protections, please take precautions in

order to avoid damage of the main board.