mc33982b Freescale Semiconductor, Inc, mc33982b Datasheet - Page 3

• Manufacturer Part Number: mc33982b
• Description: Single Intelligent High-current Self-protected Silicon High Side Switch 2.0m
• Manufacturer: Freescale Semiconductor, Inc

Table 1. Pin Definitions
Analog Integrated Circuit Device Data
Freescale Semiconductor
Number
Functional descriptions of many of these pins can be found in the Functional Pin Description section beginning on
Pin
10
1
2
3
4
5
6
7
8
9
Pin Name
WAKE
CSNS
SCLK
VDD
RST
FSI
CS
FS
IN
SI
Function
Output
Output
Input
Input
Input
Input
Input
Input
Input
Input
Pin
Digital Drain Voltage
Reset (Active Low)
Output Current
Fail-Safe Input
Formal Name
12
(Active Low)
(Active Low)
Fault Status
Serial Clock
Direct Input
Chip Select
Serial Input
Figure 3. 33982B Pin Connections
Monitoring
(Power)
Wake
11 10 9
PIN CONNECTIONS
15
HS
8 7 6 5
VPWR
GND
13
14
This pin is used to output a current proportional to the high side output
current and used externally to generate a ground-referenced voltage for
the microcontroller to monitor output current.
This pin is used to input a Logic [1] signal in order to enable the watchdog
timer function.
This input pin is used to initialize the device configuration and fault
registers, as well as place the device in a low current sleep mode.
The Input pin is used to directly control the output.
This is an open drain configured output requiring an external pull-up
resistor to V
The value of the resistance connected between this pin and ground
determines the state of the output after a watchdog timeout occurs.
This input pin is connected to a chip select output of a master
microcontroller (MCU).
This input pin is connected to the MCU providing the required bit shift
clock for SPI communication.
This is a command data input pin connected to the SPI Serial Data
Output of the MCU or to the SO pin of the previous device in a daisy chain
of devices.
This is an external voltage input pin used to supply power to the SPI
circuit.
4
HS
16
DD
3 2
for fault reporting.
1
Definition
TRANSPARENT
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PIN CONNECTIONS
page
33982
15.
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