E981.18A39FB ELMOS Semiconductor, E981.18A39FB Datasheet - Page 20

• 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
Each transmission starts with a falling edge on LDB and ends with the rising edge. During the
transmission command and data shift is controlled by SCK and LDB according to the following rules:
•
•
•
•
•
The 981.18 allows a 8 or 16 Bit data transfer. In case of a 16 Bit transfer, the last 8 bits are decoded
and the first 8 bits are rejected. The 8 bit MISO output will be sent two times in this case.
5.4.2
5.4.3
5.4.4
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
1
2
3
1
2
3
1
2
3
No.
No.
No.
Commands and data are shifted with MSB first and LSB last.
Each bit on the MOSI line is sampled on the rising edge of SCK
Each bit on the MISO line is shifted out on the falling edge of SCK
A command is only executed on the rising edge of LDB when 8 or 16 clock-cycles are counted
during the last transmission.
MISO becomes active during LDB='0' and is Tristate during LDB='1'
Input Low voltage
Input high voltage
Internal pull down resistor
Input low voltage
Input high voltage
Internal pull up resistor
Output Low voltage
Output High voltage
High impedance output current
during high level at pin LDB
SPI Terminal MOSI,SCK, DC
SPI Terminal LDB, DC
SPI Terminal MISO, DC
Description
Description
Description
Table 15: SPI Terminals MOSI,SCK
Table 17: SPI Terminal MISO
Table 16: SPI Terminal LDB
4.5V<V
4.5V<V
4.5V<V
4.5V<V
4.5V<V
4.5V<V
I
4.5V<V
I
4.5V<V
4.5V<V
0<V
MISO
MISO
Condition
Condition
Condition
MISO
= +500uA;
= -200uA,
Page 20 of 63
<V
5
5
5
5
5
5
5
5
5
Data Sheet
<5.5V
<5.5V
<5.5V;
<5.5V
<5.5V
<5.5V,
<5.5V
<5.5V
<5.5V,
5
V
V
R
V
V
R
V
V
I
LEAK
Di,L,MOSI,SCK
Di,H, MOSI,SCK
Di,L
Di,H
Do,L
Do,H
PD,MOSI/SCK
PU_LDB
Symbol
Symbol
Symbol
LDB,
MISO
LDB
MISO
MISO
V
Min
Min
Min
-2.5
5
0.8
0.8
90
90
-0.4
-
-
-
QM-No.: 25DS0072E.00
Typ
Typ
Typ
150
150
-
-
-
-
-
-
Max
Max
Max
+2.5
210
210
E981.18
0.4
2
2
-
-
-
Unit
Unit
Unit
k
k
µA
V
V
V
V
V
V