.. _acsip_s76s:

AcSIP S76S
##########

========
Overview
========

The `AcSIP S76S`_  is an SiP from AcSIP_ containing an `STMicro STM32L073RZ`_ MCU,
a `Semtech SX1276`_ LoRaWAN transceiver, and a +20 dBm power amplifier.  Refer to the
`AcSIP S76S Product Information Brief`_ for details.  Further information is available
from the `AcSIP Product Data Download`_ site (may need login). The parts are `available through TechShip`_.

Zephyr applications may use the **acsip_s76s** configuration to use this SiP.

.. figure:: img/acsip_s76s.png
     :width: 189px
     :align: center
     :height: 115px
     :alt: AcSIP S76S system on a chip, containing STMicro STM32L073RZ and Semtech SX1276

     AcSIP S76S

================
Device Resources
================

The embedded `STMicro STM32L073RZ`_ has some GPIOs and SPI2 internally committed to the LoRaWAN
transceiver operation.  See `internally committed table`_ for a list of resources committed to this function.

As a result, some functions, ports and features of the `STMicro STM32L073RZ`_ are not available.
See `unavailable table`_ for a list of resources not available due to a lack of pin-out.

Available pinned-out resources are listed in `this table`_.  The actual `S76S pinout table`_ is below.

These tables are STM32L07x generic - some pinned-out resources may be unavailable due to limitations
on the `STMicro STM32L073RZ`_ processor itself.  Consult with the `STMicro STM32L073RZ`_ documentation.

===========
Development
===========

The Ronoth_ LoDev_ board is an open source development board, see its board description files.

=========
Debugging
=========

Programming and debugging uses the SWD port, as on any STM32 processor.  An ST-LINK/V2 adapter
may be used with the appropriate software (*st-utils* package on Linux).

.. _S76S pinout table:

==================================
Pin Assignments and Available Pins
==================================

-------------------
S76S Pin Assignment
-------------------

=== ================ === ================
Pin Function         Pin Function
=== ================ === ================
1   NC               32  GND
2   GND              33  RF_ANT
3   GND              34  GND
4   PC1              35  GND
5   PC2              36  PA1\_RF\_FEM_CPS
6   PC3              37  GND
7   NC               38  NC
8   NC               39  GND
9   NC               40  NC
10  NC               41  GND
11  NC               42  NC
12  nReset           43  VDD
13  PA0              44  VDD
14  GND              45  PA8\_USART1\_CK
15  GND              46  PA10\_USART1\_RX
16  PA2\_TxD\_A      47  PA9\_USART1\_TX
17  PA3\_RxD\_A      48  PA11\_USART1\_CTS
18  PA4\_SPI1\_NSS   49  PA12\_USART1\_RTS
19  PA5\_SPI1\_SCK   50  PA13_SWDIO
20  PA6\_SPI1\_MISO  51  PA14_SWCLK
21  PA7\_SPI1\_MOSI  52  PC10
22  PC4              53  PC11
23  PC5              54  PC12
24  PB0\_IO\_INT1    55  PD2
25  PB1\_IO\_INT2    56  PB5
26  PC6              57  PB6_SCL
27  PC7              58  PB7_SDA
28  PC8              59  BOOT0
29  PC9              60  PB8\_IO\_LED_FCT
30  RXTX/RFMOD       61  GND
31  GND              62  GND
=== ================ === ================

.. _this table:

--------------------------------
Ports Connected to External Pins
--------------------------------

======== ======== ============= ==== ========================================================================================================== =======================================
Pin name Pin Type I/O Structure Note Alternate functions                                                                                        Additional functions
======== ======== ============= ==== ========================================================================================================== =======================================
BOOT0    I                      -    -                                                                                                          -
NRST     I/O      -             -    -                                                                                                          -
PA0      I/O      TC            -    TIM2_CH1, TSC_G1_IO1, USART2_CTS, TIM2_ETR, USART4_TX, COMP1_OUT                                           COMP1_INM, ADC_IN0, RTC_TAMP2/WKUP1
PA1      I/O      FT            -    EVENTOUT, LCD_SEG0, TIM2_CH2, TSC_G1_IO2, USART2_RTS/USART2_DE, TIM21_ETR, USART4_RX                       COMP1_INP, ADC_IN1
PA2      I/O      FT            -    TIM21_CH1, LCD_SEG1, TIM2_CH3, TSC_G1_IO3, USART2_TX, LPUART1_TX, COMP2_OUT                                COMP2_INM, ADC_IN2
PA3      I/O      FT            -    TIM21_CH2, LCD_SEG2, TIM2_CH4, TSC_G1_IO4, USART2_RX, LPUART1_RX                                           COMP2_INP, ADC_IN3
PA4      I/O      TC            (1)  SPI1_NSS, TSC_G2_IO1, USART2_CK, TIM22_ETR                                                                 COMP1_INM, COMP2_INM, ADC_IN4, DAC_OUT1
PA5      I/O      TC            -    SPI1_SCK, TIM2_ETR, TSC_G2_IO2, TIM2_CH1                                                                   COMP1_INM, COMP2_INM, ADC_IN5, DAC_OUT2
PA6      I/O      FT            -    SPI1_MISO, LCD_SEG3, TIM3_CH1, TSC_G2_IO3, LPUART1_CTS, TIM22_CH1, EVENTOUT, COMP1_OUT                     ADC_IN6
PA7      I/O      FT            -    SPI1_MOSI, LCD_SEG4, TIM3_CH2, TSC_G2_IO4, TIM22_CH2, EVENTOUT, COMP2_OUT                                  ADC_IN7
PA8      I/O      FTf           -    MCO, LCD_COM0, USB_CRS_SYNC, EVENTOUT, USART1_CK, I2C3_SCL                                                 -
PA9      I/O      FTf           -    MCO, LCD_COM1, TSC_G4_IO1, USART1_TX, I2C1_SCL, I2C3_SMBA                                                  -
PA10     I/O      FTf           -    LCD_COM2, TSC_G4_IO2, USART1_RX, I2C1_SDA                                                                  -
PA11     I/O      FT            (2)  SPI1_MISO, EVENTOUT, TSC_G4_IO3, USART1_CTS, COMP1_OUT                                                     USB_DM
PA12     I/O      FT            (2)  SPI1_MOSI, EVENTOUT, TSC_G4_IO4, USART1_RTS/USART1_DE, COMP2_OUT                                           USB_DP
PA13     I/O      FT            -    SWDIO, USB_NOE, LPUART1_RX                                                                                 -
PA14     I/O      FT            -    SWCLK, USART2_TX, LPUART1_TX                                                                               -
PB0      I/O      FT            -    EVENTOUT, LCD_SEG5, TIM3_CH3, TSC_G3_IO2                                                                   LCD_VLCD3, ADC_IN8, VREF_OUT
PB1      I/O      FT            -    LCD_SEG6, TIM3_CH4, TSC_G3_IO3, LPUART1_RTS/LPUART1_DE                                                     ADC_IN9, VREF_OUT
PB5      I/O      FT            -    SPI1_MOSI, LCD_SEG9, LPTIM1_IN1, I2C1_SMBA, TIM3_CH2/TIM22_CH2, USART1_CK, USART5_CK, USART5_RTS/USART5_DE COMP2_INP
PB6      I/O      FTf           -    USART1_TX, I2C1_SCL, LPTIM1_ETR, TSC_G5_IO3                                                                COMP2_INP
PB7      I/O      FTf           -    USART1_RX, I2C1_SDA, LPTIM1_IN2, TSC_G5_IO4, USART4_CTS                                                    COMP2_INP, PVD_IN
PB8      I/O      FTf           -    LCD_SEG16, TSC_SYNC, I2C1_SCL                                                                              -
PC1      I/O      FTf           -    LPTIM1_OUT, LCD_SEG19, EVENTOUT, TSC_G7_IO2, LPUART1_TX, I2C3_SDA                                          ADC_IN11
PC2      I/O      FTf           -    LPTIM1_IN2, LCD_SEG20, SPI2_MISO/I2S2_MCK, TSC_G7_IO3                                                      ADC_IN12
PC3      I/O      FT            -    LPTIM1_ETR, LCD_SEG21, SPI2_MOSI/I2S2_SD, TSC_G7_IO4                                                       ADC_IN13
PC4      I/O      FT            -    EVENTOUT, LCD_SEG22, LPUART1_TX                                                                            ADC_IN14
PC5      I/O      FT            -    LCD_SEG23, LPUART1_RX, TSC_G3_IO1                                                                          ADC_IN15
PC6      I/O      FT            -    TIM22_CH1, LCD_SEG24, TIM3_CH1, TSC_G8_IO1                                                                 -
PC7      I/O      FT            -    TIM22_CH2, LCD_SEG25, TIM3_CH2, TSC_G8_IO2                                                                 -
PC8      I/O      FT            -    TIM22_ETR, LCD_SEG26, TIM3_CH3, TSC_G8_IO3                                                                 -
PC9      I/O      FTf           -    TIM21_ETR, LCD_SEG27, USB_NOE/TIM3_CH4, TSC_G8_IO4, I2C3_SDA                                               -
PC10     I/O      FT            -    LPUART1_TX, LCD_COM4/LCD_SEG2 8/LCD_SEG48, USART4_TX                                                       -
PC11     I/O      FT            -    LPUART1_RX, LCD_COM5/LCD_SEG2 9/LCD_SEG49, USART4_RX                                                       -
PC12     I/O      FT            -    LCD_COM6/LCD_SEG3 0/LCD_SEG50, USART5_TX, USART4_CK                                                        -
PD2      I/O      FT            -    LPUART1_RTS/LPUART1_DE, LCD_COM7/LCD_SEG3 1/LCD_SEG51, TIM3_ETR, USART5_RX                                 -
======== ======== ============= ==== ========================================================================================================== =======================================

Notes:

1. PA4 offers a reduced touch sensing sensitivity. It is thus recommended to use it as sampling capacitor I/O.
2. These pins are powered by VDD_USB. For all characteristics that refer to VDD, VDD_USB must be used instead.

.. _internally committed table:

--------------------------
Internally Dedicated Ports
--------------------------

======== ======== ============= ==== =========================
Pin name Pin Type I/O Structure Note Function
======== ======== ============= ==== =========================
PA15     I/O      FT            -    INTERNAL SX1276 D5
PB3      I/O      FTf           -    INTERNAL SX1276 D4
PB4      I/O      FTf           -    INTERNAL SX1276 D3
PB9      I/O      FTf           -    INTERNAL SX1276 D2
PB10     I/O      FT            -    INTERNAL SX1276 Reset
PB11     I/O      FT            -    INTERNAL SX1276 D0
PB12     I/O      FT            -    INTERNAL SX1276 SPI nCS
PB13     I/O      FTf           -    INTERNAL SX1276 SPI2_SCK
PB14     I/O      FTf           -    INTERNAL SX1276 SPI2_MISO
PB15     I/O      FT            -    INTERNAL SX1276 SPI2_MOSI
PC13     I/O      FT            -    INTERNAL SX1276 D1
======== ======== ============= ==== =========================

.. _unavailable table:

-----------------------------------
Ports Not Available / Not Connected
-----------------------------------

====================== ======== ============= ==== ================================================================= ====================
Pin name               Pin Type I/O Structure Note Alternate functions                                               Additional functions
====================== ======== ============= ==== ================================================================= ====================
PC0                    I/O      FTf           -    LPTIM1_IN1, LCD_SEG18, EVENTOUT, TSC_G7_IO1, LPUART1_RX, I2C3_SCL ADC_IN10
PC14- OSC32_IN (PC14)  I/O      FT            -    -                                                                 OSC32_IN
PC15- OSC32_OUT (PC15) I/O      TC            -    -                                                                 OSC32_OUT
PD0                    I/O      FT            -    TIM21_CH1, SPI2_NSS/I2S2_WS                                       -
PD1                    I/O      FT            -    SPI2_SCK/I2S2_CK                                                  -
PD3                    I/O      FT            -    USART2_CTS, LCD_SEG44, SPI2_MISO/I2S2_MCK                         -
PD4                    I/O      FT            -    USART2_RTS/USART2_DE, SPI2_MOSI/I2S2_SD                           -
PD5                    I/O      FT            -    USART2_TX                                                         -
PD6                    I/O      FT            -    USART2_RX                                                         -
PD7                    I/O      FT            -    USART2_CK, TIM21_CH2                                              -
PD8                    I/O      FT            -    LPUART1_TX, LCD_SEG28                                             -
PD9                    I/O      FT            -    LPUART1_RX, LCD_SEG29                                             -
PD10                   I/O      FT            -    LCD_SEG30                                                         -
PD11                   I/O      FT            -    LPUART1_CTS, LCD_SEG31                                            -
PD12                   I/O      FT            -    LPUART1_RTS/LPUART1_DE, LCD_SEG32                                 -
PD13                   I/O      FT            -    LCD_SEG33                                                         -
PD14                   I/O      FT            -    LCD_SEG34                                                         -
PD15                   I/O      FT            -    USB_CRS_SYNC, LCD_SEG35                                           -
PE0                    I/O      FT            -    LCD_SEG36, EVENTOUT                                               -
PE1                    I/O      FT            -    LCD_SEG37, EVENTOUT                                               -
PE2                    I/O      FT            -    LCD_SEG38, TIM3_ETR                                               -
PE3                    I/O      FT            -    TIM22_CH1, LCD_SEG39, TIM3_CH1                                    -
PE4                    I/O      FT            -    TIM22_CH2, TIM3_CH2                                               -
PE5                    I/O      FT            -    TIM21_CH1, TIM3_CH3                                               -
PE6                    I/O      FT            -    TIM21_CH2, TIM3_CH4                                               RTC_TAMP3/WKUP3
PE7                    I/O      FT            -    LCD_SEG45, USART5_CK/USART5_RTS/USART5_DE                         -
PE8                    I/O      FT            -    LCD_SEG46, USART4_TX                                              -
PE9                    I/O      FT            -    TIM2_CH1, LCD_SEG47, TIM2_ETR, USART4_RX                          -
PE10                   I/O      FT            -    TIM2_CH2, LCD_SEG40, USART5_TX                                    -
PE11                   I/O      FT            -    TIM2_CH3, USART5_RX                                               LCD_VLCD1
PE12                   I/O      FT            -    TIM2_CH4, SPI1_NSS                                                LCD_VLCD3
PE13                   I/O      FT            -    LCD_SEG41, SPI1_SCK                                               -
PE14                   I/O      FT            -    LCD_SEG42, SPI1_MISO                                              -
PE15                   I/O      FT            -    LCD_SEG43, SPI1_MOSI                                              -
PH0-OSC_IN (PH0)       I/O      TC            -    USB_CRS_SYNC                                                      OSC_IN
PH1- OSC_OUT (PH1)     I/O      TC            -    -                                                                 OSC_OUT
PH9                    I/O      FT            -    -                                                                 -
PH10                   I/O      FT            -    -                                                                 -
VDD_USB                S                      -    -                                                                 -
VDDA                   S        -             -    -                                                                 -
VLCD                   S                      -    -
VREF-                  S        -             -    -                                                                 -
VREF+                  S        -             -    -                                                                 -
VSSA                   S        -             -    -                                                                 -
====================== ======== ============= ==== ================================================================= ====================

==========
References
==========

.. _AcSIP: http://www.acsip.com.tw

.. _AcSIP S76S: http://www.acsip.com.tw/index.php?action=products-detail&fid1=11&fid2=29&fid3=27&id=79&lang=3

.. _AcSIP S76S Product Information Brief: http://www.acsip.com.tw/upload/product_attach/S76S_Brief_ver02.pdf

.. _AcSIP Product Data Download: http://www.acsip.com.tw/index.php?action=technical

.. _available through TechShip: https://techship.com/products/acsip-lorawan-module-s76s/

.. _Ronoth: https://ronoth.com/

.. _LoDev: https://ronoth.com/products/lodev-s76s-lora-soc-development-board?variant=31608819417220

.. _STMicro STM32L073RZ: STMicro STM32L073RZ

.. _Semtech SX1276: https://www.semtech.com/products/wireless-rf/lora-transceivers/sx1276

=======
License
=======

This document Copyright (c) 2021 Dean Weiten <dmw@weiten.com>

SPDX-License-Identifier: Apache-2.0