mc33984 Freescale Semiconductor, Inc, mc33984 Datasheet - Page 3

• Manufacturer Part Number: mc33984
• Description: Dual Intelligent High-current Self-protected Silicon High-side Switch 4.0 M
• Manufacturer: Freescale Semiconductor, Inc

Table 1. Pin Definitions
Analog Integrated Circuit Device Data
Freescale Semiconductor
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
IN0
FSI
CS
FS
SI
Function
Output
Output
Input
Input
Input
Input
Input
Input
Input
Input
Pin
Figure 3. 33984 Pin Connections (Transparent Top View)
Output Current Monitoring
Fault Status (Active Low)
Chip Select (Active Low)
Digital Drain Voltage
Reset (Active Low)
Fail-Safe Input
Formal Name
Direct Input 0
Serial Clock
Serial Input
12
(Power)
Wake
PIN CONNECTIONS
11 10 9 8
HS1
15
VPWR
GND
7
13
14
This pin is used to output a current proportional to the designated
HS0-1 output.
This pin is used to input a Logic [1] signal so as 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.
This input pin is used to directly control the output HS0.
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 outputs 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 of a daisy
chain of devices.
This is an external voltage input pin used to supply power to the SPI
circuit.
6 5
4
16
HS0
DD
3 2
for fault reporting.
1
Definition
TRANSPARENT
TOP VIEW
PIN CONNECTIONS
page
33984
16.
3