TLE7231G Infineon Technologies, TLE7231G Datasheet - Page 22

• Manufacturer Part Number: TLE7231G
• Description: IC DRIVER SPI 4CH LS DSO-14
• Manufacturer: Infineon Technologies
• Type: Low Sider

Specifications of TLE7231G

• Input Type: SPI
• Number Of Outputs: 4
• On-state Resistance: 1 Ohm
• Current - Output / Channel: 320mA
• Current - Peak Output: 950mA
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: DSO-14
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SP000297859; TLE7231G; TLE7231GTR

Figure 11
In the SPI block of each device, there is one shift register where one bit from SI line is shifted in each SCLK. The
bit shifted out can be seen at SO. After 8 SCLK cycles, the data transfer for one device has been finished. In single
chip configuration, the CS line must transit from low to high to make the device accept the transferred data. In
daisy chain configuration the data shifted out at device #1 has been shifted in to device #2. When using three
devices in daisy chain, three times 8 bits have to be shifted through the devices. After that, the MCS line must
transit from low to high (see
Figure 12
9.3
The SPI protocol of the TLE7231G provides two registers. The input register and the diagnosis register. The
diagnosis register contains four pairs of diagnosis flags, the input register contains the input multiplexer
configuration. After power-on reset, all register bits are cleared to 0.
SI
Datasheet
MCLK
MCS
MCLK
time
MO
MCS
MI
MO
7
MI
SO device 3
SI device 3
IN3
Daisy Chain Configuration
Data Transfer in Daisy Chain Configuration
SPI Protocol
SI
6
device 1
SPI
Figure
5
12).
SO
IN2
SO device 2
SI device 2
SI
4
device 2
SPI
22
3
SPI Driver for Enhanced Relay Control
SO
IN1
SO device 1
SI device 1
SI
2
Serial Peripheral Interface (SPI)
device 3
SPI
SPIDER - TLE7231G
SPI_DasyChain.emf
1
Rev. 1.0, 2008-02-28
SPI_DasyChain2.emf
SO
IN0
0