Board/DPR/DPR1112-dat/DPR1112-dat.md
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# DPR1112-dat
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+
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+- Provides 3.3V and 1.8V dual power output, easy to use!
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+- Added SPI level switching function, supporting 3.3V and 1.8V (exclusive to the voltage switching version)!
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+- Added PTC current-limiting protection, with a current limit of 500MA, so you don’t have to worry about wrong connections or short circuits (exclusive to the voltage switching version)!
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+- ach writer has a unique ID number
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+- Driver, burning tool, manual download address: www.cisdo.cn/post/5.html (copy the link to open in a new window)
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+
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+
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+## Pin Definitions
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+
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+- ● MISO, CLK, CSB, and CLK are SPI programmer interfaces, which are connected to the SPI interface of the CSR Bluetooth chip in one-to-one correspondence. The default SPI level is 1.8V!
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+- ● 3V3 and 1V8 are reserved power outputs, which can provide a current of no more than 500MA (it will be automatically protected if it exceeds 500MA)!
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+- ● VS is the SPI voltage selection port. When VS is left floating (there is an internal pull-up), the SPI level is 1.8V. When VS is grounded, the SPI level is 3.3V!
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+
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+## Supported Chips
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+
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+- ● BC2 series (such as BC215159A, etc.)
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+- ● BC3 series (such as BC31A223, BC358239A, etc.)
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+- ● BC4 series (such as BC413159A06, BC417143B, BC419143A, etc.)
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+- ● BC5 series (such as BC57F687, BC57E687, BC57H687C, etc.)
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+- ● BC6 series (such as BC6110, BC6130, BC6145, CSR6030, BC6888, etc.)
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+- ● BC7 series (such as BC7820, BC7830, etc.)
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+- ● CSR86xx series (such as CSR8605, CSR8610, CSR8615, CSR8620, CSR8630, CSR8635, CSR8640, CSR8645, CSR8670, CSR8675, etc.)
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+- ● CSRA63/CSRA64 series (such as CSRA64110, CSRA64210, CSRA64215, etc.)
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+- ● CSR10 series (such as CSR1000, CSR1001, CSR1010, CSR1011, CSR1012, CSR1013, etc.)
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+- ● CSRB5 series (such as CSRB5341, CSRB5342, CSRB5348, etc.)
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+- ● QCC300x series (QCC3001~QCC3008 series)
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+
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+## ref
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+
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+- [[CSR-dat]]
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+
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+- [[DPR1112]]
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Board/OPM/OPM1135-dat/2023-10-11-13-32-39.png
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Board/OPM/OPM1135-dat/OPM1135-dat.md
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+# OPM1135-dat
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+
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+Pin Pads
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+- GND
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+- 3V3
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+- GND
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+- VIN
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+
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+
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+chip enable ON/OFF switch
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+
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+![](2023-10-11-13-32-39.png)
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Board/SCU/SCU1073-dat.md
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+# SCU1073-dat
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+
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+## Features
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+
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+- level safety protection
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+
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+## Danger!
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+
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+The water level monitoring feet are not resistant to high pressure and there is no risk when placed in the water normally.
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+Do not directly contact the water level monitoring pin with high-voltage circuit parts such as the atomizer sheet.
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+
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+## Pin definitions
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+
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+Vws = Withstand voltage value (V)
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+
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+| Pin No. | Pin name | Vws | Function description |
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+| ------- | -------- | --- | ---------------------------------- |
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+| 1 | R | - | Oscillating resistance (note1) |
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+| 2 | R | - | Supply voltage monitoring resistor |
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+| 3 | GND | - | Power ground |
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+| 4 | GND | - | Power ground |
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+| 5 | VIN | - | Input |
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+| 6 | LED | - | indicator light |
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+| 7 | VDD | 5 | power supply |
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+| 8 | N/F | 5 | Water level monitoring (note2) |
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+
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+- note1 = main source of deviation, resistor accuracy is 1%
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+- note2 = be careful not to come into contact with high-pressure parts
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+
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+## Design Note
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+
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+- Note: The resistor in series between pin 1 and pin 2 can be used for frequency adjustment. Since the layout of the PCB may cause overall frequency deviation, the frequency can be modified to the operating frequency of 108KHz by modifying its resistance value.
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+- Since the chip operating frequency requires high precision, the stability and consistency of the input voltage must be ensured.
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+- Changes in the power supply voltage will cause changes in the chip's operating frequency, thereby affecting the working effect of the atomizer.
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+- The frequency error of the chip mainly comes from the oscillation resistor, so try to use a resistor with a precision of 1% to reduce the frequency deviation.
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+- And when laying out the board, the oscillation resistors should be laid out strictly according to the anti-interference drawing method. The resistors should be placed as close to the pins of the chip as possible to reduce the resistance brought by the PCB board and the frequency changes caused by environmental interference.
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+
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+## ref
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+
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+- [[SCU1073]]
SDK/CSR-dat/csr-dat.md
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+
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+# csr-dat
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+
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+
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+## Note:
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+
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+Regarding the SPI voltage description, everyone knows that the IO port voltage of the CSR86XX series is 1.8V, so the SPI programming voltage also requires 1.8V. Of course, it can also work with 3.3V, but if the SPI level of 3.3V is used, it will probably It will cause five thousandths of the chip to be damaged, which is not a big deal for developers, but for mass production, the problem is very serious!
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+
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+- [[DPR1112-dat]]
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Tech/power-dat/battery-drainer-dat/battery-drainer-dat.md
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## boards
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-- [[OPM1133-dat]]
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+- [[OPM1133-dat]] - [[OPM1134-dat]] - [[OPM1135-dat]]
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+- [[OPM1137-dat]]
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## Demo
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Tech/tech-dat.md
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- [[LTE]] - [[POE-dat]] - [[low-power-test-dat]] - [[M2M-interface]]
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-Industrial
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+### Power
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+
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+- [[battery-drainer-dat]]
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+
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+Industrial / Sensor
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- [[Peltier-dat]]
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### Sensors