BOM-DAT/crystal-dat/crystal-dat.md
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# crystal-dat
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-![](2023-10-25-14-25-39.png)
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+![](2023-10-25-14-25-39.png)
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+## SMD crystal
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+### 3225
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+
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+- 24 mhz
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+- 14.7456 mhz
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Board-dat/DAR/DAR1064-DAT/DAR1064-DAT.md
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![](55-05-18-02-02-2023.png)
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+## Crystal Setup
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-## ref
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-- https://w.electrodragon.com/w/Category:AVR128#AVR128_Board
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+- please notice all crystal are not populated, normally use the internal clock is enough
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+- PF0 / PF1 low speed RTC clock, PTH footprint
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+- PA0 / PA1 high speed clock , SMD footprint
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+- [[crystal-dat]]
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-- [[UPDI-DAT]] - [[CH340-DAT]] - [[CH341-DAT]] - [[avr128-dat]]
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-- [[DAR1064]]
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+## Debug
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+- Please check if backside jumpers are all soldered or not, power LED is NO or not.
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+- The full schematic is for purchased customers only, you can also view it directly here.
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+- Default firmware should be hold down PC7 button and PC6 LED light up, or simple blink sketch. You can find all sketches in our [[arduino-IDE-DAT]]
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+- [More information please find at page here.](https://w2.electrodragon.com/Board/DAR/DAR1064-DAT/DAR1064-DAT.md)
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+## ref
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+- https://w.electrodragon.com/w/Category:AVR128#AVR128_Board
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+- [[UPDI-DAT]] - [[CH340-DAT]] - [[CH341-DAT]] - [[avr128-dat]]
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+
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+- [[DAR1064]]
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-## Debug
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-- Please check if backside jumpers are all soldered or not, power LED is NO or not.
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-- The full schematic is for purchased customers only, you can also view it directly here.
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-- Default firmware should be hold down PC7 button and PC6 LED light up, or simple blink sketch. You can find all sketches in our [[arduino-IDE-DAT]]
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-- [More information please find at page here.](https://w2.electrodragon.com/Board/DAR/DAR1064-DAT/DAR1064-DAT.md)
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Chip-cn-dat/SIMCOM-dat/Y7080E-dat/Y7080E-dat.md
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- [[Y7080]]
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-- [[SIMCOM-dat]]
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+- [[SIMCOM-dat]]
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++POWERON:0
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+^SIMST:0
Chip-dat/HOPE-MICROELECTRONICS/HOPE-MICROELECTRONICS.md
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+# HOPE-MICROELECTRONICS
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+RFM02 433S2
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+https://www.tme.eu/en/details/rfm02_433s2/rf-modules/hope-microelectronics/rfm02-433s2/
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