Motorola 33996 Data Sheet/Manual
Summary
The 33996 is a professional-grade, high-reliability 16-output low-side switch designed as an expander buffer for microcontrollers. It features comprehensive fault management, PWM control, and uses a 24-bit SPI interface for precise serial input and diagnostic reporting. This manual provides full technical specifications, pinout diagrams, operational parameters, and application guidance for system integration. Ideal for electrical engineers designing complex embedded systems requiring robust power switching capability for diverse loads like LEDs or inductive components while maintaining MCU efficiency.
Page 1 Text Content
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查询PC33996EK/R2供应商 Freescale Semiconductor, Inc.
MOTOROLA Document order number: MC33996
Rev 1.0, 01/2004
SEMICONDUCTOR TECHNICAL DATA
Preliminary Information
16-Output Switch with SPI Control The 33996 is a 16-output low-side switch with a 24-bit serial input control. It is designed for a variety of applications including inductive, incandescent,
and LED loads. The Serial Peripheral Interface (SPI) provides both input DUAL OCTAL SERIAL SWITCH
control and diagnostic readout. A Pulse Width Modulation (PWM) control input WITH SERIAL PERIPHERAL is provided for pulse width modulation of multiple outputs at the same duty
INTERFACE I/O
cycle. A dedicated reset input provides the ability to clear all internal registers and turn all outputs off. The 33996 directly interfaces with microcontrollers and is compatible with both 3.3 V and 5.0 V CMOS logic levels. The 33996, in effect, serves as a bus expander and buffer with fault management features that reduce the MCU’s fault management burden. Features Designed to Operate 5.0 V < VPWR < 27 V 24-Bit SPI for Control and Fault Reporting, 3.3 V/5.0 V Compatible
EK (Pb-FREE) SUFFIX
Outputs Are Current Limited (0.9 A to 2.5 A) to Drive Incandescent
CASE 1454-01
Lamps
32-LEAD SOICW EXPOSED PAD
Output Voltage Clamp of +50 V During Inductive Switching On/Off Control of Open Load Detect Current (LED Application) VPWR Standby Current < 10 µA ORDERING INFORMATION RDS(ON) of 0.55 Ω at 25°C Typical
Temperature
Device Package
Independent Overtemperature Protection Range (TA)
Output Selectable for PWM Control
PC33996EK/R2 -40°C to 125°C SOICW-EP
Output ON Short-to-VBAT and OFF Short-to-Ground/Open Detection 32-Pin Exposed Pad Package for Thermal Performance Pb-Free Packaging Designated by Suffix Code EK
Simplified Application Diagram 33996 Simplified Application Diagram
VPWR VBAT
VDD SOPWR VPWR MCU
SCLKSCLK OUT0
CSCS OUT1 Solenoid/Relay SIMISO OUT2 OUT3
SOMOSI
PWMPWM
RSTRST
OUT6 OUT7 OUT8 LED OUT9 OUT10 OUT11 OUT12 OUT13 OUT14 OUT15
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.
For More Information On This Product,
© Motorola, Inc. 2004
Go to: www.freescale.com
Page Summary Contents For Motorola 33996 Data Sheet/Manual
Manual Details
| Brand | Motorola |
|---|---|
| Pages | 16 |
| File Size | 508.97 KB |
| Published | May 29, 2026 |
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Frequently Asked Questions
What logic voltages can the 33996 interface with?
It is compatible with both 3.3 V and 5.0 V CMOS logic levels.
How does the chip manage multiple outputs simultaneously?
A dedicated PWM control input allows for pulse width modulation across multiple outputs.
What diagnostic information can the user read via SPI?
The 24-bit SPI provides comprehensive diagnostic readout and fault reporting features.
What is the limited current range of the outputs?
The outputs are current limited in the range of 0.9 A to 2.5 A.