STM8AF61xx, STM8AF62xx
Product overview
UART mode
● Full duplex, asynchronous communications - NRZ standard format (mark/space)
● High-precision baud rate generator
– A common programmable transmit and receive baud rates up to fMASTER/16
● Programmable data word length (8 or 9 bits) – 1 or 2 stop bits – parity control
● Separate enable bits for transmitter and receiver
● Error detection flags
● Reduced power consumption mode
● Multi-processor communication - enter mute mode if address match does not occur
● Wakeup from mute mode (by idle line detection or address mark detection)
● Two receiver wakeup modes:
– Address bit (MSB)
– Idle line
5.10
Input/output specifications
The product features four different I/O types:
● Standard I/O 2 MHz
● Fast I/O up to 10 MHz
● High sink 8 mA, 2 MHz
● True open drain (I2C interface)
To decrease EMI (electromagnetic interference), high sink I/Os have a limited maximum
slew rate. The rise and fall times are similar to those of standard I/Os.
The analog inputs are equipped with a low leakage analog switch. Additionally, the schmitt-
trigger input stage on the analog I/Os can be disabled in order to reduce the device standby
consumption.
STM8A I/Os are designed to withstand current injection. For a negative injection current of
4 mA, the resulting leakage current in the adjacent input does not exceed 1 µA. Thanks to
this feature, external protection diodes against current injection are no longer required.
Doc ID 14952 Rev 6
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