sc18is602b NXP Semiconductors, sc18is602b Datasheet - Page 14

• Manufacturer Part Number: sc18is602b
• Description: I2c-bus To Spi Bridge
• Manufacturer: NXP Semiconductors

NXP Semiconductors
9. Limiting values
Table 11.
In accordance with the Absolute Maximum Rating System (IEC 60134).
[1]
[2]
[3]
SC18IS602B
Product data sheet
Symbol
T
T
V
I
I
I
P
OH(I/O)
OL(I/O)
I/O(tot)(max)
amb(bias)
stg
n
tot
/pack
This product includes circuitry specifically designed for the protection of its internal devices from the damaging effects of excessive static
charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying greater than the rated maximum.
Parameters are valid over the operating temperature range unless otherwise specified. All voltages are with respect to V
otherwise noted.
Based on package heat transfer, not device power consumption.
Limiting values
Parameter
bias ambient temperature
storage temperature
voltage on any other pin
HIGH-level output current per input/output pin
LOW-level output current per input/output pin
maximum total I/O current
total power dissipation per package
6. Read the 8 bytes from the EEPROM. Note that we are writing a command, even
7. The interrupt can be cleared, if needed.
8. Read back the data buffer. Note that we will actually need to read back 11 data bytes
though we are going to perform a read from the SPI port. The Function ID is again
04h, indicating that we are going to use SS2. The EEPROM requires that you send a
03h for a read, followed by the subaddress you would like to read. We are going to
read back the same data previously written, so this means that the subaddress should
be 0030h. We would like to read back 8 bytes so we can send eight bytes of FFh to
tell the SC18IS602B to send eight more bytes on MOSI. While it is sending these
eight data bytes, it is also reading the MISO pin and saving the data in the buffer.
since the first three bytes sent on the SPI port were the read code (03h) and the two
subaddress bytes.
You can see that on the I
SPI bus. The first byte is the SC18IS602B address, followed by three dummy data
bytes. These dummy data bytes correspond to the three bytes sent to the EEPROM
before it actually places data on the bus (command 03h, subaddress 0030h).
ST,50,04,03,00,30,FF,FF,FF,FF,FF,FF,FF,FF,SP
ST,50,F1,SP
ST,50,00,00,00,01,02,03,04,05,06,07,08,SP
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 3 August 2010
Clear interrupt
2
C-bus the first four bytes do not contain the data from the
referenced to V
Conditions
operating
[1][2]
SS
[3]
Min
−55
−65
−0.5
-
-
-
-
Read 8 bytes using SS2
Read the data buffer
SC18IS602B
I
2
C-bus to SPI bridge
Max
+125
+150
+5.5
8
20
120
1.5
© NXP B.V. 2010. All rights reserved.
SS
unless
Unit
°C
°C
V
mA
mA
mA
W
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