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TPIC44L03 データシート(PDF) 11 Page - Texas Instruments |
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TPIC44L03 データシート(HTML) 11 Page - Texas Instruments |
11 / 24 page TPIC44L01, TPIC44L02, TPIC44L03 4CHANNEL SERIAL AND PARALLEL LOW SIDE PREFET DRIVER SLIS062B – NOVEMBER 1996 – REVISED AUGUST 2001 11 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 after CS is transitioned low. The remaining 3 bits of fault data are shifted out in the following three clock cycles. Fault data is latched into the serial register when CS is transitioned low. A fault 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. The rising edge of CS inhibits SDI, puts SDO into a high-impedance state, latches the 4 bits of serial data into the output control register, and clears and reenable the serial fault registers (see Figure 13). When a shorted-load condition occurs with the TPIC44L01 or TPIC44L03, then the controller must disable and reenable the channel to clear the fault register and FLT. The TPIC44L02 automatically retries the output and the fault clears after the fault condition has been corrected. 12 3 4 3-State FLT3 FLT2 FLT1 FLT0 IN3 3-State SCLK CS SDO Figure 13 parallel input data operation In addition to the serial interface, the TPIC44L01, TPIC44L02, and TPIC44L03 also provides a parallel interface to the microcontroller. The output turns on when either the parallel or the serial interface commands it to turn on. The parallel data terminals 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 reenable a gate output after it has been disabled due to a shorted-load fault condition. |
同様の部品番号 - TPIC44L03 |
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同様の説明 - TPIC44L03 |
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