参数资料
型号: MC33780EG
厂商: Freescale Semiconductor
文件页数: 1/37页
文件大小: 0K
描述: IC DBUS MASTER DUAL DIFF 16-SOIC
标准包装: 47
系列: *
类型: *
应用: *
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.295",7.50mm 宽)
供应商设备封装: 16-SOIC W
包装: 管件
Document Number: MC33780
Rev 4.0, 11/2006
Freescale Semiconductor
Advance Information
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
Freescale Semiconductor, Inc., 2006. All rights reserved.
Dual DBUS Master with
Differential Drive and
Frequency Spreading
The 33780 is a master device for two differential DBUS buses. It
contains the logic to interface the buses to a standard serial
peripheral interface (SPI) port and the analog circuitry to drive data
and power over the bus as well as receive data from the remote slave
devices.
The differential mode of the 33780 generates lower electro-
magnetic interference (EMI) in situations where data rates and wiring
make this a problem. Frequency spreading further reduces in-
terference by spreading the energy across many channels, reducing
the energy in any single channel.
Features
Two Independent DBUS I/Os
Common SPI Interface for All Operations
Open-Drain Interrupt Output with Pull-up
Maskable Interrupts for Send and Receive Data Status
Automatic Message Cyclical Redundancy Checking (CRC)
Generation and Checking
Four-Stage Transmit and Receive Buffers
8- to 16-Bit Messages with 0- to 8-Bit CRC
Independent Frequency Spreading for Each Channel
Pb-Free Packaging Designated by Suffix Code EG
Figure 1. 33780 Simplified Application Diagram
DIFFERENTIAL DBUS MASTER
33780
ORDERING INFORMATION
Device
Temperature
Range (TA)
Package
MC33780EG/R2
-40°C to 85°C
16 SOICW
MCZ33780EG/R2
EG (PB-FREE SUFFIX)
98ASB42567B
16-PIN SOICW
MCU
SCLK
VCC
INT
MISO
MOSI
CLK
D0L
VSUP
D0H
D1L
D1H
CS
RST
GND
33780
VCC
SCLK
CS
MOSI
MISO
RST
INT
CLK
GND
Twisted Pair
DSI/DBUS SLAVE
+5.0 V
+25 V
33793
DSI/DBUS SLAVE
33793
4.7 nF capacitors from D0H, D0L, D1H
and D1L to circuit ground are required
for proper operation.
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