User Manual

Apollo3 Blue Datasheet
DS-A3-0p9p1 Page 49 of 909 2019 Ambiq Micro, Inc.
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Table 1: Pin List and Function Table
BGA
Pin
Number
CSP Pin
Number
GPIO Pad
Number
Function
Select
Number
Pad Function
Name
Description Pin Type
POWER
B2 B8 - - VDDP VDD Supply for SIMO Buck Converter Power
B1 B9 - - VDDB VDD Supply for BLE/Burst Buck Converter Power
F3 F5 - - VDDH VDD Supply for I/O Pads Power
C4 C5 - - VDDA Analog Voltage Supply Power
J4 H6 - - VCC RF Voltage Supply Power
E1 D6 - - VDDS High Voltage Digital Supply Power
G2 F9 - - VDCDCRF RF Voltage Supply Power
B3 B7 - - VSSP Ground Connection for SIMO Buck Converter Ground
E3 D5 - - VSSA Ground for Analog Supply Ground
C2 C7 - - VSSB Ground Connection for BLE/Burst Buck Converter Ground
E2 F7 - - VSS Ground for Digital Ground
F2 G7 - - VSSBA Ground for BLE Analog Supply Ground
H1 E9 - - VSSVCO Ground for BLE VCO Supply Ground
H2 H7 - - VSSS Ground for BLE RF Supply Ground
A6 A4 - - ADCVREF Analog to Digital Converter Reference Voltage Analog
H3 E7 - - DVDD Deoupling Cap for BLE digital supply Power
E4 - - - NC No Connect
BUCK
A3 A7 - - VDDC SIMO Buck Converter Voltage Core Output Supply Power
D2 C6 - - VDDF
SIMO Buck Converter Voltage Flash/Memory Out-
put Supply
Power
A1 A9 - -
SIMO-
BUCK_SW
SIMO Buck Converter Inductor Switch Output Power
A2 A8 - -
SIMO-
BUCK_SWSEL
SIMO Buck Converter Inductor Switch Input Power
D1 C8 - - VDDBH_SW BLE/Burst Buck Converter Inductor Switch Power
C1 C9 - - VDDBH BLE/Burst Buck Converter Voltage Output Supply Power
OSCILLATOR
A4 A6 - - XO 32.768 kHz Crystal Output XT
B4 B6 - - XI 32.768 kHz Crystal Input XT
G1 D9 - - XO32MM 32 MHz Crystal Input XT
F1 D8 - - XO32MP 32 MHz Crystal Output XT
RESET