TLE7234EM Infineon Technologies, TLE7234EM Datasheet - Page 28

• Manufacturer Part Number: TLE7234EM
• Description: IC DRIVER SPI RELAY CTRL 24SSOP
• Manufacturer: Infineon Technologies
• Series: -r
• Type: High Side/Low Side Driverr

Specifications of TLE7234EM

• Input Type: SPI
• Number Of Outputs: 8
• On-state Resistance: 900 mOhm, 1.6 Ohm
• Current - Output / Channel: 250mA, 500mA
• Current - Peak Output: 500mA, 1A
• Voltage - Supply: 9 V ~ 16 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 24-LSSOP (0.154", 3.90mm Width)
• Packages: PG-SSOP-24
• Channels: 8.0
• Rds (on) (typ): 0.9 Ohm
• Vdd: 3.0 - 5.5 V
• Vds(cl): 41.0 - 52.0 V
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Figure 11
9.3
The control and diagnosis function of the TLE7234EM is based on two register banks which are accessed via
following SPI protocol. The control register bank contains eight registers (with 4 bit each) addressed by a 3 bit
pointer. The diagnosis register bank contains four registers (with 4 bit each) addressed by a 2 bit pointer. An
additional indication bit is available to differentiate between standard diagnosis information and data read from a
register bank.
Control and Diagnosis Mode
SI
SI
SI
S
O
S
O
S
O
1) This bit is valid between CS hi -> lo and first SCLK lo -> hi transition.
Note: Reading a register needs two SPI frames. In the first frame the RD command is sent. In the second frame,
Data Sheet
MCLK
MCS
Write Register Command
Read Register Command
Read Standard Diagnosis
Standard Diagnosis
Second Frame of Read Command
time
MO
the output at SPI signal SO will contain the requested information. Any command can be executed in the
second frame.
MI
CS
TER
TER
TER
1)
Data Transfer in Daisy Chain Configuration
SPI Protocol
SO device 3
SI device 3
7
1
0
0
0
0
1
6
x
1
ADDR (Control)
ADDR (Diagnosis)
ADDR
ADDR
SO device 2
SI device 2
AWK
5
x
28
4
x
0
SPI Driver for Enhanced Relay Control
D67
3
x
x
SO device 1
SI device 1
Serial Peripheral Interface (SPI)
D45
2
x
x
DATA
DATA
DATA
Rev. 1.1, 2011-04-05
D23
1
0
1
SPI_DasyChain2.emf
TLE7234EM
D01
RB
0
x