mc33912 Freescale Semiconductor, Inc, mc33912 Datasheet - Page 4

• Manufacturer Part Number: mc33912
• Description: Lin System Basis Chip With Dc Motor Pre-driver And Current Sense
• Manufacturer: Freescale Semiconductor, Inc

Table 1. 33912 Pin Definitions
4
33912
PIN CONNECTIONS
Notes
1.
2.
3.
4.
5.
A functional description of each pin can be found in the
Pin
12
13
14
15
16
17
19
18
20
21
22
23
24
25
26
27
29
30
31
32
When used as digital input, a series 33kΩ resistor must be used to protect against automotive transients.
Reverse battery protection series diodes must be used externally to protect the internal circuitry.
This pin can be connected directly to the battery line for voltage measurements. The pin is self protected against reverse battery
connections. It is strongly recommended to connect a 10kΩ resistor in series with this pin for protection purposes.
External capacitor (1µF < C < 10µF; 0.1Ω < ESR < 5Ω) required.
External capacitor (2µF < C < 100µF; 0.1Ω < ESR < 10Ω) required.
Pin Name
WDCONF
ISENSEH
ISENSEL
VSENSE
PGND
HVDD
AGND
LGND
VDD
HS2
HS1
VS2
VS1
LS2
LS1
LIN
L4
L3
L2
L1
Current Sense Pins
Hall Sensor Supply
Analog Ground Pin
Power Ground Pin
High Side Outputs
Voltage Sense Pin
Voltage Regulator
Low Side Outputs
Power Supply Pin
Configuration Pin
Wake-Up Inputs
LIN Ground Pin
Formal Name
Watchdog
LIN Bus
Output
Output
This input pin is for configuration of the watchdog period and allows the
disabling of the watchdog.
This pin represents the single-wire bus transmitter and receiver.
This pin is the device LIN ground connection. It is internally connected to the
PGND pin.
Current Sense differential inputs.
Relay drivers low side outputs.
This pin is the device low side ground connection. It is internally connected to
the LGND pin.
These pins are the wake-up capable digital inputs
can be sensed analog via the analog multiplexer.
High side switch outputs.
These pins are device battery level power supply pins.VS2 is supplying the
HSx drivers while VS1 supplies the remaining blocks.
Battery voltage sense input.
+5.0V switchable supply output pin.
+5.0V main voltage regulator output pin.
This pin is the device analog ground connection.
Functional Pin Description
(3)
section beginning on
Definition
Analog Integrated Circuit Device Data
(4)
(5)
Freescale Semiconductor
(1)
. In addition, all Lx inputs
(2)
page
21.