Difference between revisions of "VKTECH saleae clone"

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| samplerate_state = —
| samplerate_state = —
| triggers        = none (SW-only)
| triggers        = none (SW-only)
| voltages        = max. 5.5V
| voltages        = max. 5.25V
| threshold        = Fixed: VIH=1.4V, VIL=0.8V
| threshold        = Fixed: VIH=1.4V, VIL=0.8V
| memory          = none
| memory          = none
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See [[CWAV USBee SX/Info]] for some more details (such as '''lsusb -vvv''' output) on the device.
See [[CWAV USBee SX/Info]] for some more details (such as '''lsusb -vvv''' output) on the device.


CWAV, Inc. [http://usbee.com/company.htm has been closed and no longer sells] the USBee test pods (has chosen to go out of business effective September 10, 2015). But there are a lot of clones, like [[MCU123 USBee AX Pro clone]]. Just search for '''24mhz 8ch logic analyzer''' on http://ebay.com/ or http://aliexpress.com/ for one (usually under $10).


== Hardware ==
== Hardware ==


* '''Main chip''': Cypress CY7C68013A-56PVXC (FX2LP)
* '''Main chip''': Cypress CY7C68013A-56LTXC (FX2LP in QFN package)
** '''Note:''' Older versions used the Cypress CY7C68013-56PVC (FX2), which is different in some ways (e.g. less SRAM)
* '''Transceiver''' NXP LVC245A
* '''3.3V voltage regulator''': ST LD33
* '''3.3V voltage regulator''': 6206A  1711/33
* '''I2C EEPROM''': Microchip 24LC01B
* '''I2C EEPROM''': ATMHK218  24C02N
* '''Crystal''': 24MHz
* '''Crystal''': 24MHz


== Photos ==
== Photos ==
'''New version with Cypress CY7C68013A (FX2LP):'''


<gallery>
<gallery>
Line 51: Line 48:
File:Usbee sx pcb front.jpg|<small>PCB, front</small>
File:Usbee sx pcb front.jpg|<small>PCB, front</small>
File:Usbee sx pcb back.jpg|<small>PCB, back</small>
File:Usbee sx pcb back.jpg|<small>PCB, back</small>
</gallery>
'''Old version with Cypress CY7C68013 (FX2):'''
<gallery>
File:Cwav_usbee_sx_device_top.jpg|<small>Device, front</small>
File:Cwav_usbee_sx_device_bottom.jpg|<small>Device, back</small>
File:Cwav_usbee_sx_pcb_top.jpg|<small>PCB, front</small>
File:Cwav_usbee_sx_pcb_bottom.jpg|<small>PCB, back</small>
File:Cwav_usbee_sx_revision_zx.jpg|<small>"USBee ZX" marking</small>
</gallery>
</gallery>


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Since we use the open-source [[fx2lafw]] firmware for this device, we don't need to know the protocol.
Since we use the open-source [[fx2lafw]] firmware for this device, we don't need to know the protocol.
However, for those interested in this, someone else has already [https://blog.visucore.com/tags/usbee decoded most of it].


== Resources ==
== Resources ==

Revision as of 14:18, 24 January 2018

VKTECH
File:VKTECH-clone.png
Status supported
Source code fx2lafw
Channels 8
Samplerate 24MHz
Samplerate (state) —
Triggers none (SW-only)
Min/max voltage max. 5.25V
Threshold voltage Fixed: VIH=1.4V, VIL=0.8V
Memory none
Compression none
Website [1]


            • IN PROGRESS ******


This is a fairly standard FX2 based 8 channel 24 MHz logic analyzer, purchased from AliExpress, arrived in 6 days

https://aliexpress.com/item/24MHz-8-Channel-Logic-Analyzer/32814170174.html


The VKTECH clone is a USB-based, 8-channel logic analyzer (and signal generator) with up to 24MHz sampling rate.

In sigrok, we use the open-source fx2lafw firmware for this logic analyzer.

See CWAV USBee SX/Info for some more details (such as lsusb -vvv output) on the device.


Hardware

  • Main chip: Cypress CY7C68013A-56LTXC (FX2LP in QFN package)
  • Transceiver NXP LVC245A
  • 3.3V voltage regulator: 6206A 1711/33
  • I2C EEPROM: ATMHK218 24C02N
  • Crystal: 24MHz

Photos

  • Device, front

  • Device, back

  • Device, open

  • PCB, front

  • PCB, back

Protocol

Since we use the open-source fx2lafw firmware for this device, we don't need to know the protocol.

Resources

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