Datasheet

Product overview STM8S207xx, STM8S208xx
22/103 Doc ID 14733 Rev 12
4.14.4 I
2
C
● I
2
C master features:
– Clock generation
– Start and stop generation
● I
2
C slave features:
– Programmable I
2
C address detection
– Stop bit detection
● Generation and detection of 7-bit/10-bit addressing and general call
● Supports different communication speeds:
– Standard speed (up to 100 kHz)
– Fast speed (up to 400 kHz)
4.14.5 beCAN
The beCAN controller (basic enhanced CAN), interfaces the CAN network and supports the
CAN protocol version 2.0A and B. It has been designed to manage a high number of
incoming messages efficiently with a minimum CPU load.
For safety-critical applications the beCAN controller provides all hardware functions to
support the CAN time triggered communication option (TTCAN).
The maximum transmission speed is 1 Mbit.
Transmission
● Three transmit mailboxes
● Configurable transmit priority by identifier or order request
● Time stamp on SOF transmission
Reception
● 8-, 11- and 29-bit ID
● One receive FIFO (3 messages deep)
● Software-efficient mailbox mapping at a unique address space
● FMI (filter match index) stored with message
● Configurable FIFO overrun
● Time stamp on SOF reception
● Six filter banks, 2 x 32 bytes (scalable to 4 x 16-bit) each, enabling various masking
configurations, such as 12 filters for 29-bit ID or 48 filters for 11-bit ID
● Filtering modes:
– Mask mode permitting ID range filtering
– ID list mode
● Time triggered communication option
– Disable automatic retransmission mode
– 16-bit free running timer
– Configurable timer resolution
– Time stamp sent in last two data bytes