README: update securechip model and other small fixes

README.md

@@ -3,9 +3,9 @@
 ![CI](https://github.com/digitalbitbox/bitbox02-firmware/workflows/ci/badge.svg?branch=master)
 
 The BitBox02 is a hardware wallet that simplifies secure handling of crypto coins through storing
-private keys and signing transactions. The content of this repository is the bootloader and
-firmware used on the device. The BitBox02 is meant to be used primarily with the [BitBox
-App](https://github.com/digitalbitbox/bitbox-wallet-app), although third party integration is
+private keys and signing transactions. The content of this repository is the bootloader and firmware
+used on the device. The BitBox02 is meant to be used primarily with the
+[BitBoxApp](https://github.com/digitalbitbox/bitbox-wallet-app), although third party integration is
 possible through the BitBox02 API.
 
 The main functionality of the firmware is the following:
@@ -24,25 +24,23 @@ The main functionality of the firmware is the following:
 * Display the receive address, transaction amount and network fee and sign each input after
   confirmation.
 
-
 ## Architecture
 
 <p align="center"><img src="./doc/bb02-firmware-arch.svg" width="80%" /></p>
 
-The main chip on the device is the microcontroller from Microchip (atsamd51j20a). This chip is used
+The main chip on the device is the microcontroller from Microchip (ATSAMD51J20A). This chip is used
 for communication to the BitBoxApp via USB, to the user via the sliders and to the secure element
-(atecc608a) via I2C.
+(ATECC608B) via I2C.
 
 ### Sliders
 
-The sliders along the edges of the device are used for user input.  There are three input gestures:
+The sliders along the edges of the device are used for user input. There are three input gestures:
 * Tap
 * Slide
 * Hold to confirm
 
 <p align="center"><img src="./doc/bb02PwEntry.gif" /></p>
 
-
 ### USB
 
 The USB communication is implemented using the request-response pattern with encrypted protobuf