 |
Os motores de busca de Datasheet de Componentes eletrônicos |
|
|
Os motores de busca de Datasheet de Componentes eletrônicos |
|
MC33999 Folha de dados(PDF) 9 Page - Motorola, Inc |
|
||||||||||||||||||||||||||||||
MC33999 Folha de dados(HTML) 9 Page - Motorola, Inc |
|
|
9 / 16 page  MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA 33999 9 SYSTEM/APPLICATION INFORMATION INTRODUCTION The 33999 is designed and developed for automotive and industrial applications. It is a 16-output power switch having 24-bit serial control. The 33999 incorporates SMARTMOS technology having CMOS logic, bipolar/MOS analog circuitry, and independent DMOS power output transistors. Many benefits are realized as a direct result of using this mixed technology. Figure 1, page 2, illustrates a simplified internal block diagram of the 33999. MCU INTERFACE DESCRIPTION In operation the 33999 functions as a 16-output serial switch serving as a microcontroller unit (MCU) bus expander and buffer with fault management and fault reporting features. In doing so, the device directly relieves the MCU of the fault management functions. The 33999 directly interfaces to an MCU, operating at system clock serial frequencies up to 6.0 MHz using a Serial Peripheral Interface (SPI) for control and diagnostic readout. Figure 3 illustrates the basic SPI configuration between an MCU and one 33999. Figure 3. 33999 SPI Interface with Microcontroller All inputs are compatible with 3.3 V/5.0 V CMOS logic levels and incorporate positive logic. An input programmed to a logic low state (< 0.8 V) has the corresponding output OFF. Conversely, an input programmed to a logic high state (> 2.2 V) has the output being controlled ON. Diagnostics is treated in a similar manner—outputs with a fault will feed back (via SO) to the microcontroller a logic [1], while normal operating outputs will provide a logic [0]. The 33999 may be controlled and provide diagnostics using a daisy chain configuration or in parallel mode. Figure 4 shows the daisy chain configuration using the 33999. Data from the MCU is clocked daisy chain through each device while the Chip Select bit (CS) is commanded low by the MCU. During each clock cycle, output status from the daisy-chained 33999s is being transferred back to the MCU via the Master In Slave Out (MISO) line. On rising edge of CS, data stored in the input register is then transferred to the output driver. Daisy chain control of the 33999 requires 24 bits per device. Figure 4. 33999 SPI System Daisy Chain Multiple 33999 devices can be controlled in a parallel input fashion using the SPI. Figure 5, page 10, illustrates potentially 32 loads being controlled by two dedicated parallel MCU ports used for chip select. MC68HCXX Microcontroller 33999 24-Bit Shift Register Shift Register To Logic Receive Buffer Parallel Ports MISO SCLK MOSI SI SO RST CS PWM MC68HCXX Microcontroller 33999 Shift Register Ports Parallel 33999 SI SO SCLK CS RST PWM MISO SCLK PWM1 PWM2 MOSI SI SO SCLK CS RST PWM Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
Nº de peça semelhante - MC33999 |
|
Descrição semelhante - MC33999 |
|
|
|
Ligação URL |
| Privacy Policy |
| ALLDATASHEETPT.COM |
| ALLDATASHEET é útil para você? [ DONATE ] |
Sobre Alldatasheet | Publicidade | Contato conosco | Privacy Policy | roca de Link | Lista de Fabricantes All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Portuguese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
