User Manual

Apollo3 Blue Datasheet
DS-A3-0p9p1 Page 63 of 909 2019 Ambiq Micro, Inc.
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H5 - 42
0 UART1TX UART1 Transmit Output
1 NCE42
IO Master N Chip Select 42
Table 564, “NCE Encoding Table,” on page 382
Output
2CT16
See “Implementing Counter/Timer Connections” on
page 397.
Output
3 GPIO42 General Purpose I/O
Input/
Output
4 M3SCL I2C Master 3 Clock
Open
Drain
5 M3SCK SPI Master 3 Clock Output
6RSVReserved
7RSVReserved
J5 - 43
0 UART1RX UART1 Receive Input
1 NCE43
IO Master N Chip Select 43
Table 564, “NCE Encoding Table,” on page 382
Output
2CT18
Timer/Counter Interface Signal 18
See “Implementing Counter/Timer Connections” on
page 394.
Output
3 GPIO43 General Purpose I/O
Input/
Output
4 M3SDAWIR3
I2C Master 3 I/O
SPI Master 3 3 Wire Data
Bidirec-
tional
Open
Drain
5 M3MISO SPI Master 3 Input Data Input
6RSVReserved
7RSVReserved
J7 H4 44
0 UA1RTS UART1 Request To Send (RTS) Output
1 NCE44
IO Master N Chip Select 44
Table 564, “NCE Encoding Table,” on page 382
Output
2CT20
Timer/Counter Interface Signal 20
See “Implementing Counter/Timer Connections” on
page 394.
Output
3 GPIO44 General Purpose I/O
Input/
Output
4RSVReserved
5 M4MOSI SPI Master 4 Output Data Output
6 UART0TX UART0 Transmit Output
7RSVReserved
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