33970 Datasheet, PDF (3/36 Pages) Freescale Semiconductor, Inc – Dual Gauge Driver Integrated Circuit with Improved Damping Algorithms

PIN CONNECTIONS
PIN CONNECTIONS
COS0+
1
COS0-
2
SIN0+
3
SIN0-
4
GND
5
GND
6
GND
7
GND
8
CS
9
SCLK
10
SO
11
SI
12
24
COS1+
23
COS1-
22
SIN1+
21
SIN1-
20
GND
19
GND
18
GND
17
GND
16
VPWR
15
RST
14
VDD
13
RTZ
Figure 3. 33970 Pin Connections
Table 1. 33970 Pin Definitions
A functional description of each pin can be found in the Functional Pin Description section beginning on page 10.
Pin Number Pin Name Pin Function Formal Name
Definition
1
2
3
4
5 – 8,
17– 20
9
10
COS0+
COS0−
SIN0+
SIN0−
GND
CS
SCLK
Output
H-Bridge Outputs 0 ^{Each pin is the output pin of a half bridge, designed to source or sink}
current.
Ground
Input
Input
Ground
Chip Select
Serial Clock
These pins serve as the ground for the source of the low-side output
transistors as well as the logic portion of the device.
This pin is connected to a chip select output of a LSI IC.
This pin is connected to the SCLK pin of the master device and acts as a
bit clock for the SPI port.
11
SO
Output
Serial Output
This pin is connected to the SPI Serial Data Input pin of the master
device, or to the SI pin of the next device in a daisy chain.
12
SI
Input
Serial Input
This pin is connected to the SPI Serial Data Output pin of the master
device from which it receives output command data.
13
RTZ
Output
Multiplexed Output ^{This is a multiplexed output pin, for the non-driven coil, during a Return to}
Zero (RTZ) event.
14
VDD
Input
Voltage
This SPI and logic power supply input will work with 5.0 V supplies.
15
RST
Input
Reset
This input has an internal active pull-up.
16
VPWR
Input
Battery Voltage
Power supply.
21
SIN1−
Output
H-Bridge Outputs 1 ^{Each of these pins are the output pin of a half bridge, designed to source}
22
SIN1+
or sink current.
23
COS1−
24
COS1+
Analog Integrated Circuit Device Data
Freescale Semiconductor
33970
3