Q67006-A9315 Datasheet, PDF (7/17 Pages) Infineon Technologies AG – Smart Quad Low-Side Switch

Data Sheet TLE 6220 GP
SCLK - Serial Clock. The system clock pin clocks the internal shift register of the TLE
6220 GP. The serial input (SI) accepts data into the input shift register on the falling edge of
SCLK while the serial output (SO) shifts diagnostic information out of the shift register on the
rising edge of serial clock. It is essential that the SCLK pin is in a logic low state whenever
chip select CS makes any transition.
SI - Serial Input. Serial data bits are shifted in at this pin, the most significant bit first. SI infor-
mation is read in on the falling edge of SCLK. Input data is latched in the shift register and
then transferred to the control buffer of the output stages.
The input data consists of one byte, made up of four control bits and four data bits. The con-
trol word is used to program the device, to operate it in a certain mode as well as providing
diagnostic information (see page 11). The four data bits contain the input information for the
four channels, and are high active.
SO - Serial Output. Diagnostic data bits are shifted out serially at this pin, the most significant
bit first. SO is in a high impedance state until the CS pin goes to a logic low state. New diag-
nostic data will appear at the SO pin following the rising edge of SCLK.
RESET - Reset pin. If the reset pin is in a logic low state, it clears the SPI shift register and
switches all outputs OFF. An internal pull-up structure is provided on chip. As long as the reset
pin is low the device is in low quiescent current mode and the supply current is reduced to typ.
20µA.
Output Stage Control
The four outputs of the TLE 6220 GP can either be controlled in parallel (IN1...IN4), or via the
Serial Peripheral Interface (SPI).
Parallel Control
A Boolean operation (either AND or OR) is performed on each of the parallel inputs and re-
spective SPI data bits, in order to determine the states of the respective outputs. The type of
Boolean operation performed is programmed via the serial interface.
The parallel inputs are high or low active depending on the PRG pin. If the parallel input pins
are not connected (independent of high or low activity) it is guaranteed that the outputs 1 to 4
are switched OFF. PRG pin itself is internally pulled up when it is not connected.
PRG - Program pin. PRG = High (V_S): Parallel inputs Channel 1 to 4 are high active
PRG = Low (GND): Parallel inputs Channel 1 to 4 are low active.
V1.1
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26.Aug. 2002