Before opening the Iono RP D16 Base case, disconnect all power sources and any
connection to external devices, including USB cables.
Use a non-conductive pin or small tool to help extract the battery from its holder. Insert the
new battery with a gentle push. You don't need tools to insert the battery. The battery is
held into place by a spring contact.
Be sure to insert the battery so that the positive (+) terminal of the battery is in contact with
the outer body of the battery holder, and the negative (-) terminal is in contact with the
contact pad of the circuit board, as shown in the photo below.
Reversing the battery polarity may damage the product.
The real time clock will reset its time immediately when the RTC backup battery is
disconnected.
ATECC608 secure element
Iono RP D16 can be shipped with an optional, factory-installed hardware secure element
chip, the ATECC608 from Microchip. The ATECC608 is connected to the to the RP2040
via the I
2
C bus I2C0, GPIO0 (SDA) and GPIO1 (SCL), address: 0x60.
Its key features are:
✓
Cryptographic co-processor with secure hardware-based key storage
✓
Protected storage for up to 16 Keys, certificates or data
✓
Hardware support for asymmetric sign, verify, key agreement – ECDSA: FIPS186-3
Elliptic Curve Digital Signature
✓
ECDH: FIPS SP800-56A Elliptic Curve Diffie-Hellman
✓
NIST standard P256 elliptic curve support
✓
Hardware support for symmetric algorithms
✓
SHA-256 & HMAC hash including off-chip context save/restore
✓
AES-128: encrypt/decrypt, Galois field multiply for GCM
✓
Networking key management support
✓
Turnkey PRF/HKDF calculation for TLS 1.2 & 1.3
✓
Ephemeral key generation and key agreement in SRAM – Small message
encryption with keys entirely protected
✓
Secure boot support
✓
Full ECDSA code signature validation, optional stored digest/signature –
optional communication key disablement prior to secure boot
✓
Encryption/Authentication for messages to prevent on-board attacks
✓
Internal high-quality FIPS 800-90 A/B/C Random Number Generator (RNG)
✓
Two high-endurance monotonic counters
✓
Guaranteed unique 72-bit serial number.
NOTICE
21
Iono RP D16 User Guide
