OM6274,598 NXP Semiconductors, OM6274,598 Datasheet - Page 2

• Manufacturer Part Number: OM6274,598
• Description: DEMO BOARD I2C TO SPI SC18IS602
• Manufacturer: NXP Semiconductors

Specifications of OM6274,598

• Main Purpose: Interface, I2C to SPI Master
• Embedded: No
• Utilized Ic / Part: SC18IS602, SC18IS603
• Primary Attributes: I2C to GPIO & SPI Master
• Secondary Attributes: Up to 4 SPI Chip Selects
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-4705; 935283429598; OM6274; OM6274

The block diagram below shows an example of the SC18IS602/603 as I2C-to-SPI bus
Bridge for a serial interface application between a host processor with I2C master
interface capability and multiple SPI slave devices
The Usage Scenario of SC18IS602/603 (I
The host with I2C master interface capability sends I2C messages to the
SC18IS602/603 via I2C bus. Then, the SC18IS602/603 convert the I2C messages
to SPI messages and pass them to the SPI bus controller of SC18IS602/603,
which controls the communication between SPI slave devices,
The SC18IS602/603 receives messages from the SPI slave devices and generate
an interrupt signal so the host can retrieve the messages via I2C bus interface
The host can also send I2C messages to the SC18IS602/603 to program the GPIO
register for turning on/off the LEDs as output and detecting on/off the switches as
input
Processor
Host
Master
I
2
C
-INT
Bus
I
2
C
I
Slave
2
I
SC18IS602/603
C-to-SPI Bridge
2
C
Master
GPIO
SPI
2
C-to-SPI) Bridge
Bus
SPI
SPI Slave Devices
Peripheral
SPI EEPROM
SPI LCD
LED