bindebende / hiltester Goto Github PK

• PSU (12V 5A)
  http://hu.farnell.com/xp-power/vct60us12/psu-ac-dc-60-w-open-frame-12v/dp/1716959
• Rpi3
• Rpi signal breakout ((2A PSU),LCD, buttons,leds, UART)
  Custom
• Display(e-ink)
  https://www.adafruit.com/product/3420
• HILTester(s)
  Custom
• Rack shelf
  https://lomex.hu/hu/webshop/#/search,47-00-33/stype,1
• IO connector
  http://hu.mouser.com/Connectors/Backplane-Connectors/_/N-axj5g?Ns=Number+of+Positions%7c1&No=100&P=1z0z7m4Z1z0z357Z1z0z63vZ1z0z2lh
• Grid connector
• Ethernet connector
• USB connector
• Power switch
  http://hu.farnell.com/multicomp/1ms1t1b1m1qe/switch-spdt-100ma-125v-solder/dp/9473416
• Leds

Add pin headers where all the signals are connected from the pins (pogo) and the other side of the pins are connected to the header to the HIL. It could be jumper bypassable. Reason: put a PCB on top of it and change the pogopins which connector they are going for different group of tests.

Flash multiple DUTs.
Turn on and off power rail for all the DUTs programming one at the time (high side on/off p-ch mosfet)

• Add pull up resistors
• Add two GEN_IN input for ADC inputs. Connect together with a jumper
• Add BNC connectors

Usb should be at port A

Jumper selectable. Modules are connected with communicatin lines RS485,diff I2c

Handshake each module has a ID and when the MCU ask for handshake the slaves will continue it when the delay(ID*millisec) expires. then the master will controll all the message control flow

on PDF

one is fixed to 3v3

Change to FT230XS for easier soldering and inspecting

• internal (MCU)

• external

Turn on off supply with p-channel mosFET

To buffer the readings

Calculate the current and the resistor value

put close to the LDOs
NTC
http://hu.farnell.com/avx/nb20m00333kba/thermistor-ntc-33k-1206/dp/1672317

Make the "parallel" traces spacing even (e.g.: JTAG)

Zener protection with the series resistor on all GPIO pin

• the multiplexers have to put on the top side
• connectors have to be put on the bottom layer
• put leds which are emmiting on their bottom and add a cut out to the pcb

like: DAC7578SPW

Scope like 1:10 and 1:1 selectable with p-channel MOSFET, or with Relay
some kind of IO expander will be using because there's no 40 free pins available and the switching doesn't have to be fast (max 1Hz per ch)
Dividing options:

• 1:1
• 1:2
• 10:1

Scope connect to the DUT input pin

50 ohm on the scope???

Input reverse protection???

IO Expander (40 I/O I2c, Totem pole output, 100kOhm pull up) :
http://hu.farnell.com/nxp/pca9505dgg/ic-i-o-port-i2c-40bit-56tssop/dp/2212087?ost=PCA9505&iscrfnonsku=false&ddkey=http%3Ahu-HU%2FElement14_Hungary%2Fsearch

Example mosfet:

• http://hu.farnell.com/infineon/bsl308peh6327xtsa1/mosfet-aec-q101-dual-p-ch-tsop/dp/2725818
• http://hu.farnell.com/nxp/nx3008pbks/mosfet-pp-ch-30v-200ma-sot363/dp/2069548

switch with 4.7 mm pin spacing
http://hu.farnell.com/multicomp/1ms3t1b5m1qe/switch-spdt-on-off-on-5a-28vdc/dp/9473386