L9678P datasheet(17/203 Pages) STMICROELECTRONICS

Nome de Peças	L9678P

Descrição Electrónicos	Automotive user configurable airbag IC

PDF	203 Pages

Scroll/Zoom	100%

Fabricante Electrônico	STMICROELECTRONICS [STMicroelectronics]

Página de início	http://www.st.com

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17 / 203 page

DocID029274 Rev 3

17/203

L9678P, L9678P-S

Overview and block diagram

202

Overview and block diagram

The L9678P is a unique solution specifically targeted for entry level airbag systems while

permitting the system designer significant flexibility in configuring the system power and

management block. The configurable methodology allows cost versus performance trade-

off without changing devices or circuit board designs. The L9678P contains the base

functionality required for entry level systems and can complete a system design with a

microcontroller and acceleration sensor. The high level block diagram is shown below

Figure 2.

Basic features include a configurable power supply & management block, 4 channel squib

drivers, 2 channel HS/LS GPO drivers, 4 channel sensor interface, safing logic, watchdog

timer, ISO9141 communications and temperature sensor. The L9678P-S device is pin

compatible to the L9678P and includes two PSI-5 remote sensor interface channels and a

dedicated regulator for remote sensor.

L9678P Folha de dados(PDF) 17 Page - STMicroelectronics