PIN CONNECTIONS
PIN CONNECTIONS
Transparent Top View of Package
13 12 11 10
9
8
7
6
5
4
3
2
1
SO
16
17
24
FSI
14
GND
GND
23
GND
22
HS2
HS3
18
15
VPWR
19
20
21
HS0
HS1
NC
Figure 3. 33874 Pin Connections
Table 1. 33874 Pin Definitions
A functional description of each pin can be found in the Functional Pin Description section beginning on page 15.
Pin
Number
Pin
Function
Pin Name
Formal Name
Definition
1
CSNS
Output
Input
Output Current
Monitoring
The Current Sense pin sources a current proportional to the designated
HS0:HS3 output.
2
3
5
6
IN0
IN1
IN2
IN3
Parallel Inputs
The IN0:IN3 high side input pins are used to directly control HS0:HS3 high
side output pins, respectively.
4
TEMP
Output
Output
Input
Temperature
Feedback
This pin reports an analog value proportional to the temperature of the GND
flag (pins 14, 17, 23). It is used by the MCU to monitor board temperature.
7
FS
Fault Status
(Active Low)
This pin is an open drain configured output requiring an external pull-up
resistor to VDD for fault reporting.
8
WAKE
RST
CS
Wake
This input pin controls the device mode and watchdog timeout feature if
enabled.
9
Input
Reset
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.
10
11
12
13
Input
Chip Select
(Active Low)
This input pin is connected to a chip select output of a master microcontroller
(MCU).
SCLK
SI
Input
Serial Clock
This input pin is connected to the MCU providing the required bit shift clock for
SPI communication.
Input
Serial Input
This pin 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.
VDD
Power
Digital Drain Voltage This pin is an external voltage input pin used to supply power to the SPI circuit.
(Power)
33874
Analog Integrated Circuit Device Data
Freescale Semiconductor
3
FREESCALE [ Freescale ]
