User Manual

Apollo3 Blue Datasheet
DS-A3-0p9p1 Page 10 of 909 2019 Ambiq Micro, Inc.
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19.2.1 Register Memory Map .................................................................................. 765
19.2.2 VCOMP Registers ........................................................................................ 766
20. Voltage Regulator Module ............................................................................................. 771
20.1 Functional Overview .............................................................................................. 771
20.2 SIMO Buck ............................................................................................................ 771
20.3 BLE/Burst Buck ..................................................................................................... 772
20.3.1 BLE/Burst Buck Ton Adjustment ................................................................. 772
20.3.2 BLE/Burst Buck zero length detect .............................................................. 773
21. Electrical Characteristics ............................................................................................... 774
21.1 Absolute Maximum Ratings .................................................................................. 774
21.2 Recommended Operating Conditions .................................................................... 776
21.3 Current Consumption ............................................................................................. 776
21.4 Power Mode Transitions ........................................................................................ 778
21.5 Clocks/Oscillators .................................................................................................. 778
21.6 Bluetooth Low Energy (BLE) ................................................................................ 779
21.7 Analog-to-Digital Converter (ADC) ...................................................................... 779
21.8 Buck Converter ...................................................................................................... 783
21.9 Power-On RESET (POR) and Brown-Out Detector (BOD) ................................. 785
21.10 Resets ................................................................................................................... 786
21.11 Voltage Comparator (VCOMP) ........................................................................... 787
21.12 Inter-Integrated Circuit (I2C) Interface .............................................................. 788
21.13 Serial Peripheral Interface (SPI) Master Interface .............................................. 789
21.14 Serial Peripheral Interface (SPI) Slave Interface ................................................. 791
21.15 PDM Interface ...................................................................................................... 793
21.16 I2S Interface ......................................................................................................... 793
21.17 Universal Asynchronous Receiver/Transmitter (UART) .................................... 793
21.18 Counter/Timer (CTIMER) ................................................................................... 794
21.19 Flash Memory ...................................................................................................... 794
21.20 General Purpose Input/Output (GPIO) ................................................................ 794
21.21 Serial Wire Debug (SWD) ................................................................................... 796
22. Package Mechanical Information .................................................................................. 797
22.1 CSP Package ......................................................................................................... 797
22.2 BGA Package ......................................................................................................... 798
23. Appendix 1. FLASH OTP 0 Customer Info Space (Info0) ........................................... 804
23.1 Flash OTP INSTANCE0 INFO0 Words ............................................................... 804
23.1.1 Register Memory Map .................................................................................. 805
23.1.2 Flash OTP INSTANCE0 INFO0 Words ...................................................... 810
24. Ordering Information ..................................................................................................... 907
25. Document Revision History ........................................................................................... 908