33899 Datasheet, PDF (3/26 Pages) Freescale Semiconductor, Inc – Programmable H-Bridge Power IC

PIN CONNECTIONS
PIN CONNECTIONS
Tab
VDDQ
1
DO
2
DI
3
SCLK
4
CS
5
CRES
6
REDIS
7
VIGNP
8
VIGNP
9
S0
10
S0
11
GND
12
NC
13
LSCMP
14
EN2
15
30
CSNS
29
VCC
28
VCCL
27
REV
26
FWD
25
PWM
24
RS
23
VIGNP
22
VIGNP
21
S1
20
S1
19
GND
18
NC
17
NC
16
EN1
Tab
Figure 3. 33899 Pin Connections
Table 1. 33899 Pin Definitions
A functional description of each pin can be found in the Functional Pin Description section beginning on page 12.
Pin Number Pin Name
Formal Name
Definition
1
VDDQ
Logic Level Output Bias ^{Sets V}_OH ^{level of DO output and LSCMP.}
2
DO
SPI Data Out
SPI control data output pin from the IC to the MCU.
3
DI
SPI Data In
SPI control data input pin from the MCU to the IC.
4
SCLK
SPI Serial Clock Input ^{The SCLK input is the clock signal input for synchronization of serial data transfer.}
5
CS
Chip Select
This pin is an input connected to a chip select output of an MCU.
(Active Low)
6
CRES
Charge Pump
This pin connects an external capacitor, which is the storage reservoir for the
internal charge pump.
7
REDIS
Automatic Output Re- ^{This input pin is a connection to a capacitor that determines the default time the}
Enable Disable
output will be turned off when the low-side current comparator is tripped, if PWM
has not commanded it. The typical value with a 0.1μF is 100μs. If shorted, the
feature is disabled.
8, 9, 22, 23
10, 11
12, 19
13, 17, 18
14
15
16
20, 21
VIGNP
S0
GND
NC
LSCMP
EN2
EN1
S1
Protected Ignition
Voltage
Bridge Output 0
to Load
Ground
No Connect
Low Side Comparator
Master Enable 2
Master Enable 1
Bridge Output 1
to Load
This input pin is the primary H-Bridge power input.
Note: Not reverse voltage protected.
These output pins drive the bi-directional motor and must be connected together
on the PC board.
These pins must be connected on the PC board to the exposed pad.
These pins have no internal connections.
This output pin pulses high anytime the low side current comparator is tripped.
These input pins determine the mode of the IC; namely, sleep, standby, and run.
These output pins drive the bi-directional motor and must be connected together
on the PC board.
Analog Integrated Circuit Device Data
Freescale Semiconductor
33899
3