STLC1502 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STLC1502' PDF : 81 Pages View PDF
STLC1502
The offset of any particular register from the base address is the following.
Address
SPI_regBase+ 0x04
SPI_regBase+ 0x08
SPI_regBase+ 0x0C
Register Name
SPIDR
SPICR
SPISR
R/W Notes
R/W SPI Data I/O register.
R/W SPI configuration register
R/W SPI status register
7.6 I2C bus interface
The I2C Bus Interface serves as an interface between the microcontroller and the serial I2C bus. It pro-
vides both multimaster and slave functions, and controls all I2C bus-specific sequencing, protocol, arbi-
tration and timing. It supports fast I2C mode (400kHz).
7.6.1 Main Features
• Parallel-bus/I2C protocol converter
• Multi-master capability
• 7-bit/10-bit Addressing
• Transmitter/Receiver flag
• End-of-byte transmission flag
• Transfer problem detection
I2C Master Features:
• Clock generation
• I2C bus busy flag
• Arbitration Lost Flag
• End of byte transmission flag
• Transmitter/Receiver Flag
• Start bit detection flag
• Start and Stop generation
I2C Slave Features:
• Stop bit detection
• I2C bus busy flag
• Detection of misplaced start or stop condition
• Programmable I2C Address detection
• Transfer problem detection
• End-of-byte transmission flag
• Transmitter/Receiver flag
7.6.2 General Description
In addition to receiving and transmitting data, this interface converts it from serial to parallel format and
vice versa, using either an interrupt or polled by software. The interface is connected to the I2C bus by a
data pin (SDAI) and by a clock pin (SCLI). It can be connected both with a standard I2C bus and a Fast
I2C bus. This selection is made by software.
The interface can operate in the following modes:
– Slave transmitter/receiver
– Master transmitter/receiver
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