E981.18A39FB ELMOS Semiconductor, E981.18A39FB Datasheet - Page 17

• Manufacturer Part Number: E981.18A39FB
• Description: Motor / Motion / Ignition Controllers & Drivers 8ch squib driver
• Manufacturer: ELMOS Semiconductor
• Type: Airbag Squib Driverr

Specifications of E981.18A39FB

• Rohs: yes
• Product: Electromechanical Drivers
• Operating Supply Voltage: 5 V
• Supply Current: 4.3 mA
• Operating Temperature: - 40 C to + 95 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-44
• Number Of Outputs: 8
• Power Dissipation: 3.2 W

8-Channel Airbag Squib Driver
PRELIMINARY INFORMATION - AUG 01, 2011
5.3
The principle of the Power_on Reset concept and the supply monitoring is shown in Fig. 7.
There exist several 4 ways to reset the ASIC.
1) internal Global Power on Reset with pulse length T
2.) external Global Power on Reset by MRB
3.) CODELOCK Reset (0x70 or 0x71). Codelock close/open command generates a reset pulse
4.) SPI Reset (0x4B) generates a reset pulse (T
The reset values of all SPI-CMD registers, depending on the reset mechanism (POR/ SPI-Reset/
UNLOCK↑↓) is described in chapter 5.14.
This document contains information on a pre-production product. ELMOS Semiconductor AG reserves the right to change specifications and information herein without notice.
ELMOS Semiconductor AG
under voltage condition at:
•
•
•
For both global reset mechanisms, all internal registers are set to default values. Also the FUSE
Array read out procedure is restarted again.
(T
Codelock register itself, the SPI register, the AMX-switch S1 and the Deployment current mode
adjustment (LCM/HCM). This is needed to be able to diagnosis the UNLOCK during application and
to maintain the programmed Current Mode for the activation sequences.
command all internal registers are reset by internal signal SPI_RSTB except the SPI registers and
the Deployment current mode adjustment (HCM/LCM)
RES_CDL
V
V
V
Global Reset and voltage monitoring
5
DIG
ANL
(external supply)
(internal supply)
(internal supply)
, see chapter 5.5.1) . All internal registers are reset by internal signal CDL_RSTB except the
Fig. 7: Reset and supply monitoring
Page 17 of 63
Data Sheet
RES_SPI
, see chapter 5.3.2). With the help of this
POR
(see chapter 5.3.2) is triggered in case of
QM-No.: 25DS0072E.00
E981.18