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ArticlesRecent activity by Andre Belanger
AmbiqSuite SDK - Fixes for Known Defects in Release 2.3.2 (Fixes integrated in 2.4.2 release)
The below table is a running list of known defects in AmbiqSuite SDK release 2.3.2, along with fixes that can be applied to resolve the defect. The affected files for each fix are referenced and at...
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...
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...
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...
Q&A: How much current is consumed when RC and XT are both active during AM18x5 auto-calibration?
Full question(s): I am concerned about a possible voltage drop due to sudden current consumption when auto-calibration is executed. In Table 8 of the AM18x5 Datasheet, Ivcc_acal is specified as t...
Q&A: Is the I2C input threshold voltage for the AM08x5 the same as Vt+ and Vt-?
Full question(s): I am using the AM0805 and planning to operate at 2.4 V power supply voltage. I am concerned about the threshold voltage of the I2C ports when operating at VDD= 2.4 V. Is the I2...
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...
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...
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...
Q&A: What does 0.003 in the bottom view of the "Apollo1 CSP" image refer to?
Full question: This question is about Apollo1's CSP package. A dimension of 0.003 is shown in the BOTTOM VIEW of "Apollo1_CSP" in the Apollo1 datasheet. What is this referring to? Answer: The ...