User Manual

Apollo3 Blue Datasheet
DS-A3-0p9p1 Page 57 of 909 2019 Ambiq Micro, Inc.
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C9 A1 22
0 UART0TX UART0 Transmit Output
1 NCE22
IO Master N Chip Select 22
Table 564, “NCE Encoding Table,” on page 382
Output
2CT12
Timer/Counter Interface Signal 12
See “Implementing Counter/Timer Connections” on
page 397.
Output
3 GPIO22 General Purpose I/O
Input/
Output
4 PDMCLK PDM Output Clock Output
5RSVReserved
6MSPI0
MSPI Master Interface Signal 0
See “MSPI Connection” on page 393.
Input/
Output
7 SWO Serial Wire Debug Output Output
D8 B1 23
0 UART0RX UART0 Receive Input
1 NCE23
IO Master N Chip Select 23
Table 564, “NCE Encoding Table,” on page 382
Output
2CT14
Timer/Counter Interface Signal 14
See “Implementing Counter/Timer Connections” on
page 394.
Output
3 GPIO23 General Purpose I/O
Input/
Output
4 I2SWCLK I2S Word Clock Input
5 CMPOUT Voltage Comparator Output Output
6MSPI3
MSPI Master Interface Signal 3
See “MSPI Connection” on page 393.
Input/
Output
7RSVReserved
C8 B2 24
0 UART1TX UART1 Transmit Output
1 NCE24
IO Master N Chip Select 24
Table 564, “NCE Encoding Table,” on page 382
Output
2MSPI8
MSPI Master Interface Signal 8
See “MSPI Connection” on page 393.
Input/
Output
3 GPIO24 General Purpose I/O
Input/
Output
4 UA0CTS UART0 Clear To Send (CTS) Input
5CT21
Timer/Counter Interface Signal 21
See “Implementing Counter/Timer Connections” on
page 394.
Output
6 32kHzXT 32kHz Clock Output Output
7 SWO Serial Wire Debug Output Output
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