EFM8SB2 Datasheet, PDF (9/49 Pages) Silicon Laboratories – The EFM8SB2 highlighted features are listed below

EFM8SB2 Data Sheet
System Overview
External Memory Interface (EMIF0)
The External Memory Interface (EMIF) enables access of off-chip memories and memory-mapped devices connected to the GPIO
ports. The external memory space may be accessed using the external move instruction (MOVX) with the target address specified in
either 8-bit or 16-bit formats.
• Supports multiplexed memory access.
• Four external memory modes:
• Internal only.
• Split mode without bank select.
• Split mode with bank select.
• External only
• Configurable ALE (address latch enable) timing.
• Configurable address setup and hold times.
• Configurable write and read pulse widths.
16/32-bit CRC (CRC0)
The cyclic redundancy check (CRC) module performs a CRC using a 16-bit or 32-bit polynomial. CRC0 accepts a stream of 8-bit data
and posts the result to an internal register. In addition to using the CRC block for data manipulation, hardware can automatically CRC
the flash contents of the device.
The CRC module is designed to provide hardware calculations for flash memory verification and communications protocols. The CRC
module includes the following features:
• Support for CCITT-16 polynomial (0x1021).
• Support for CRC-32 polynomial (0x04C11DB7).
• Byte-level bit reversal.
• Automatic CRC of flash contents on one or more 1024-byte blocks.
• Initial seed selection of 0x0000/0x00000000 or 0xFFFF/0xFFFFFFFF.
3.7 Analog
Programmable Current Reference (IREF0)
The programmable current reference (IREF0) module enables current source or sink with two output current settings: Low Power Mode
and High Current Mode. The maximum current output in Low Power Mode is 63 µA (1 µA steps) and the maximum current output in
High Current Mode is 504 µA (8 µA steps).
The IREF module includes the following features:
• Capable of sourcing or sinking current in programmable steps.
• Two operational modes: Low Power Mode and High Current Mode.
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