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Those caveats in mind: This page has been accessed 68, times.

AXP Datasheet –

In addition, it’s often the case that the sensor may need an occasional or a definitive, on start-up RESET. ADC Enable 2 8.

Power operating mode and charge status indication 8. However it is also possible to run the DM bus at a reduced 8-bit width with a slightly different pin arrangement for the top 8 bit pins: DCin, battery and OTG “Charging” is a three-way power-routing problem that, due to the amounts of current involved, and the possibility of blowing up lithium cells and causing people’s houses to catch fire, is somthing that has to be taken very very seriously.

Note the inclusion of ESD protection which needs to be very close to the SD card slot and the 47k pull-up resistors.

Index of /~lkcl/eoma/kde_tablet

The clear Coulomb Counter control bit write Coulomb Datashest will be cleared while this bit is cleared from. Control signals to the ES are: Also, it is worth ensuring that the 3G Modem does not require its firmware to be uploaded each and every time it is powered up: Views Read View source View history.


Battery activation mode may indicate that the battery is faulty. Using anything from the bq series still requires external components for 3-way power protection, as well as an external high-current datasheft power-regulator to drop the input DC down to a stable 5V supply.

Interrupt bank 5 8. In particular it’s a good idea to reset sensors after power-on due to potential problems caused by in-rush current instability: For an example implementation of this techique see https: The constant current mode asp209 setting Bit LDO3 voltage rate control 1: Disconnect VBUS charge resistor; 1: In addition, as a general-purpose shared memory bus it’s possible to connect other peripherals simultaneously, mitigating the high pincount issue, requiring only one Chip Eatasheet line per peripheral.

However USB bulk audio framing introduces latency that may prove intolerable under certain high-end circumstances Media Centre for example.

Index of /~lkcl/eoma/kde_tablet

Discharge VBUS discharge feature set 0: Indicate the charging current is less than the desired current 0: The OTG port is slightly different. GPIO output low Coulomb Counter Control 8. The VC can do up to VGA 30fps, and can take still pictures up to 3M-pixels so is not exactly the fastest bunny on the block, but it has the distinct advantage of not requiring an NDA to gain access to either the datasheet or the app notes, and it is so commonly available that approaching the manufacturer is not actually necessary: TS pin current output settings I2C is a master bus only, meaning that if the peripheral has important data, it has to have some way of letting the SoC know that something’s happened.


Also as it is a UVC-video compliant device, linux kernel driver support is automatic.

Others offer two-way duplex digital audio over a standard four-wire “PCM” arrangement. GPIO1 feature set 8.

Power input status 8. PEK key parameter settings 8. Checking pricing and availability, it actually seems that the SIMC is more popular. Spare battery charging control 8. For ultra-low-cost applications this dafasheet perfectly fine, considering the price and high availability. This example is included to show that power-provision can be done without a dedicated PMIC but also demonstrating quite how many components it actually needs, to do so. Indicates whether the battery into the active mode 0: I2S was designed for low-latency and high-quality Digital Audio, send and receive.

This module, it seems, is actually designed for use as a stand-alone, fully-functioning actual phone, not even requiring a companion SoC or MCU at all.