Andre Belanger
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Articles
Recent activity by Andre Belanger-
Q&A: Do Apollo1 support SYS OFF (shutdown) mode?
Full question(s): 1.) Does Apollo1 support shutdown mode? (It is SYS OFF Mode in Apollo2) 2.) Assuming that it supports shutdown mode, is it possible to wake up with an external interrupt? 3.) If w...
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Q&A: What are calibrated RC oscillator frequency min and max in AM18x5 Datasheet?
Full question(s): What are values of min and max for the calibrated RC oscillator frequency of Table 7 in the AM18x5 Datasheet? Only Typ values are shown at TA=-40C to +85C, VCC = 1.7 to 3.6 V. A...
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Q&A: Is there any documentation that explains XTAL calibration procedure for the RTCs?
Full question(s): Is there any documentation that explains the XT oscillator calibration procedure for the RTCs? Not for calibrating RC, but XTAL. Answer(s): There is a detailed description of the...
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Q&A: When to enable MEM LDO and Core LDO to be in LPMODE during DeepSleep?
Full question(s): In the MCU Core Details chapter of the Apollo2 Datasheet, the PWRCTRL_MISCOPT register in the Power Control section enables setting of two bit fields, DIS_LDOLP-MODE_TIMERS and DI...
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Q&A: Are there any changes from the Apollo2 EVB rev 0.4 to rev 1.0?
Full question(s): This question is whether there is any differences between rev 0.4 and rev 1.0 of Apollo2 AMAPH1KK - KBR EVB. After downloading a sample program in SDK v1.2.8 to the rev 1.0 board...
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Q&A: How do you set the UART's baud rate?
Full question(s): 1.) Is "FUART" of the expression "FUART / (16 * BR) = IBRD + FBRD", as described in "13.4 Configuration" of the Apollo2 datasheet, the clock frequency (max. 24 MHz) selected by UA...
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Q&A:Apollo and Apollo2 UART Receive Interrupts
Q: How can the Apollo or Apollo2 be configured to generate an interrupt following UART reception of 1 or 2 bytes of data, since the smallest UART FIFO threshold setting is 4 bytes? Related, how ca...
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Q&A: Does the Apollo2 have DMA?
Apollo2 does not have direct memory access (DMA), which was a conscious decision targeted at providing the lowest power consumption solution possible. Apollo2 instead relies on large low-power Lo...
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Q&A: Does the Apollo1 MCU have DMA?
Apollo1 does not have direct memory access (DMA). This was a conscious decision targeted at providing the lowest power consumption solution possible.Apollo1 instead relies on large low-power Local...
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Q&A: Does Apollo1 or Apollo2 have DMA?
Full question(s): Does Apollo1 or Apollo2 have DMA and, if not, how is that mitigated? Answer(s): Apollo1 and Apollo2 do not have DMA, which was a conscious decision targeted at providing the lowes...