Difference between revisions of "Hantek DSO-220"
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== Hardware == | == Hardware == | ||
The PCB does not look professionally assembled; both my unit and the unit in the mikrocontroller.net teardown linked below appear to have most components, including SMD ones, hand-soldered. There are clear reworks present, with SMD resistors bridging between through-hole pads on the underside of the board. | |||
* '''Main chip''': Xilinx XC95144XL CPLD (JTAG IDCODE 0x59608093) ([https://www.xilinx.com/support/documentation/data_sheets/ds056.pdf datasheet]) | |||
* '''USB''': Cypress EZ-USB AN2131QC ([https://media.digikey.com/pdf/Data%20Sheets/Cypress%20PDFs/AN2131SC,QC,AN2135SC,36SC.pdf datasheet]) | |||
* '''I2C EEPROM''': Unknown (die marking masked on all photos I've seen) | |||
* '''SRAM (64KB)''': 2x ISSI IS62LV256 32K x 8 Low Voltage Static RAM ([https://media.digikey.com/pdf/Data%20Sheets/ISSI%20PDFs/IS62LV256.pdf datasheet]) | |||
* '''Dual 4-channel analog multiplexer/demultiplexer''': 74HCT4052 ([https://assets.nexperia.com/documents/data-sheet/74HC_HCT4052.pdf datasheet]) | |||
* '''Crystal''': 60MHz | |||
There is an unpopulated JTAG header for the CPLD labeled J8. Its pinout is as follows: | |||
# +3.3v (pin 1 has a square pad) | |||
# TCK | |||
# TDI | |||
# TDO | |||
# TMS | |||
# GND | |||
== Photos == | == Photos == | ||
Revision as of 00:22, 21 June 2020
The Voltcraft DSO-220 is a USB-based, 2-channel oscilloscope with an analog bandwidth of 20MHz and 60MS/s sampling rate.
This is a rebadged Hantek DSO-220.
See Voltcraft DSO-220/Info for more details (such as lsusb -vvv output) about the device.
Hardware
The PCB does not look professionally assembled; both my unit and the unit in the mikrocontroller.net teardown linked below appear to have most components, including SMD ones, hand-soldered. There are clear reworks present, with SMD resistors bridging between through-hole pads on the underside of the board.
- Main chip: Xilinx XC95144XL CPLD (JTAG IDCODE 0x59608093) (datasheet)
- USB: Cypress EZ-USB AN2131QC (datasheet)
- I2C EEPROM: Unknown (die marking masked on all photos I've seen)
- SRAM (64KB): 2x ISSI IS62LV256 32K x 8 Low Voltage Static RAM (datasheet)
- Dual 4-channel analog multiplexer/demultiplexer: 74HCT4052 (datasheet)
- Crystal: 60MHz
There is an unpopulated JTAG header for the CPLD labeled J8. Its pinout is as follows:
- +3.3v (pin 1 has a square pad)
- TCK
- TDI
- TDO
- TMS
- GND
Photos
TODO.
Protocol
TODO.