CS1112 ON Semiconductor, CS1112 Datasheet - Page 8

• Manufacturer Part Number: CS1112
• Description: Quad Power Output Driver
• Manufacturer: ON Semiconductor

CS1112.
Bar (CSB) pin. Internal active pulldowns are provided on the
parallel input pins (IN0, IN1, IN2, IN3, and SI pin).
daisy–chained with other parts which follow the SPI
protocol as defined in Figure 1. Figure 4 displays this aspect.
The serial output of each device is fed into the serial input
of the next device. All data bits are clocked into their
respective registers, while the CSB pin is low. The drivers
are switched to the resulting command when the CSB pin is
brought back high.
parallel fashion (Figure 5) instead of the daisy–chained
connection previously shown. The microprocessor controls
the CS1112 in a multiplex fashion allowing the serial data
input to be input to the device when the device is activated
through the CSB pin. This creates a system whose number
of outputs is a multiple of 4. Figure 5 displays a 12 output
setup.
use of its SPI port. Figure 7 displays the device controlling
Serial clock frequencies up to 4.0 MHz can be used by the
Internal pull–up circuitry is provided on the Chip Select
A product highlight of this part is its ability to be
Multiple SPI port devices can also be connected in a
Figure 6 displays the device controlling 4 outputs with the
P
SI
CSB
P
CS1112
SCLK
Figure 5.
SO
Figure 4.
SI
SCLK
CSB
SI
SCLK
CSB
SI
SCLK
CSB
CSB
SI
CS1112
CS1112
CS1112
Any IC using
SPI protocol
OUT3
OUT3
OUT3
OUT0
OUT1
OUT2
OUT0
OUT1
OUT2
OUT0
OUT1
OUT2
SCLK
SO
CSB
SI
Any IC using
SPI protocol
SCLK
http://onsemi.com
SO
CS1112
8
1 output with the SPI port, and 3 outputs being controlled
with the parallel inputs allowing them to run in a PWM
mode.
4 output drivers by minimizing the number of I/O pins
through use of the SPI port, and still provides the flexibility
of pulse width modulating the output drivers where needed.
The use of the SPI also allows the integrated circuit to
communicate directly with the microprocessor.
CS1112 can be used in other applications in the computer
market, industrial market, telecommunications market, or
any other instance where numerous drivers are needed. All
parts are 100% tested and guaranteed to meet all parameters
specified
specifications cover the entire voltage range for V
(9.0 V to 17 V), and V
The CS1112 provides a very efficient way of controlling
While designed for an automotive environment, the
P
P
Parallel Inputs
SPI Port
Control
in
Î Î Î Î
Î Î Î Î
Î Î Î Î
Î Î Î Î
Î Î Î Î
Î Î Î Î
Î Î Î Î
SPI Port
IN0
IN1
IN2
CSB
SCLK
SI
the
CSB
SCLK
SI
DD
electrical
Parallel Controlled Outputs
OUT0
OUT3
OUT1
OUT2
Figure 6.
Figure 7.
(4.5 V to 5.5 V).
OUT0
OUT1
OUT2
OUT3
Z0
SPI Controlled Outputs
V
BAT
Z1
characteristics.
Z0
Z2
V
BAT
Z1
Z3
Z2
SPI Controlled
Outputs
Z3
These
PWR