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TPIC46L01 Folha de dados(PDF) 10 Page - Texas Instruments

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Nome de Peças TPIC46L01
Descrição Electrónicos  6-CHANNEL SERIAL AND PARALLEL LOW-SIDE PRE-FET DRIVER
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Fabricante Electrônico  TI [Texas Instruments]
Página de início  http://www.ti.com
Logo TI - Texas Instruments

TPIC46L01 Folha de dados(HTML) 10 Page - Texas Instruments

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TPIC46L01, TPIC46L02, TPIC46L03
6-CHANNEL SERIAL AND PARALLEL LOW-SIDE PRE-FET DRIVER
SLIS055A – NOVEMBER 1996 - REVISED SEPTEMBER 1997
10
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
serial data operation (continued)
Data is shifted out of SDO on the falling edge of SCLK. The MSB of fault data is available when CS is transitioned
low. The remaining 7 bits of fault data are shifted out on the following seven clock cycles. Fault data is latched
into the serial register when CS is transitioned low. Fault data must be present on the high-to-low transition of
CS to be captured by the device. The CS input must be transitioned to a high state after the last bit of serial data
has been clocked into the device. CS puts SDO in a high-impedance state, inhibits SDI, latches the 6 bits of
serial data into the output control register, and clears and re-enables the serial fault registers (see Figure 13).
When a shorted-load condition occurs with the TPIC46L01 or TPIC46L03, the controller must disable and
re-enable the channel to clear the fault register and fault flag. The TPIC46L02 automatically retries the output
and FLT clears after the fault condition has been corrected.
12
3
4
5
6
7
8
OV
Over-Battery-Voltage Fault Bit
UV
Under-Battery-Voltage Fault Bit
FLT5
Shorted- or Open-Load Fault on Channel 5
FLT4
Shorted- or Open-Load Fault on Channel 4
FLT3
Shorted- or Open-Load Fault on Channel 3
FLT2
Shorted- or Open-Load Fault on Channel 2
FLT1
Shorted- or Open-Load Fault on Channel 1
FLT0
Shorted- or Open-Load Fault on Channel 0
N/A
Unknown Data
SCLK
CS
SDO
3-State
UV
FLT5
FLT4
FLT3
FLT2
FLT1
FLT0
N/A
O V
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit8
Figure 13
parallel input data operation
In addition to the serial input interface, the TPIC46L01 and TPIC46L02 also provides a parallel input interface
to the microcontroller. The output turns on if either the parallel or the serial interface commands it to turn on.
The parallel data pins are real-time control inputs for the output drivers. SCLK and CS are not required to transfer
parallel input data to the output buffer. Fault data must be read over the serial data bus as described in the serial
data operation section of this data sheet. The parallel input must be transitioned low and then high to clear and
re-enable a gate output that has been disabled due to a shorted-load fault condition.


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