PIN CONNECTIONS
Table 1. 33800 Pin Definitions(continued)
A functional description of each pin can be found in the Functional Pin Description section beginning on page 16.
Pin Number Pin Name Pin Function
Formal Name
Definition
Input control of OSS output 7. When configured via the SPI, P7 input may
be used to control OSS output 7 and output 8 in parallel.
15
P7
Input
Input
Input Seven
The PWMX input pin is used for direct parallel control of the GDX (Gate
Drive Output X) predriver or as on/off control of the internal PWM
controller. Control strategy is programmed via the SPI.
16,17, 18, 19,
20, 21
PWMX
Pulse Width
Modulated Input
The CCD2_GND pin provides a dedicated ground for the CCD2 constant
current controller
22
23
CCD2_GND
CCD2_OUT
Ground
Output
CCD2 Ground
The CCD2_OUT pin is connected to a series internal sense resistor and
power MOSFET driver. The CCD2_OUT has a pull up and pull down
current source and is used for fault threshold monitoring.
Current Controlled
Driver 2 Output
The CCD2_REC pin provides a recirculation path for the load current.
The CCD2_REC pin is connected to the node between the internal sense
resistor and power MOSFET driver. The device uses the differential
voltage between CCD2_REC and CCD2_OUT to determine the load
solenoid current.
24
CCD2_REC
Input
Current Controlled
Driver 2 Recirculation
Input
The EN pin is an active high input.
25
26
EN
Input
ENABLE
The RI_REF pin is used to generate a reference current. The reference
is used in the regulation of the constant current controller. The constant
current controller regulation current is inversely proportional to the
reference current through the external resistor. A 39.2kΩ 1% resistor to
ground will set the 1FF programmed current value of the CCD1 to
1075mA and the CCD2 to be 232mA.
RI_REF
Output
Resistor for Current
Reference
The CCD1_OUT pin is connected to a series internal sense resistor and
power MOSFET driver. The CCD1_OUT has a pull up and pull down
current source and is used for fault threshold monitoring.
27
28
CCD1_OUT
CCD1_REC
Output
Input
Current Controlled
Driver 1 Output
The CCD1_REC pin provides a recirculation path for the load current.
The CCD1_REC pin is connected to the node between the internal sense
resistor and power MOSFET driver. The device uses the differential
voltage between CCD1_REC and CCD1_OUT to determine the load
solenoid current.
Current Controlled
Driver 1 Recirculation
Input
The CCD1_GND pin provides a dedicated ground for the CCD1 constant
current controller
29
30
31
32
CCD1_GND
VPWR
Ground
CCD1 Ground
The VPWR pin provides power to all pre-driver, driver and output circuits
and other internal functions such as the oscillator and SPI circuits.
Power Input Analog Voltage Supply
Analog ground for the internal control circuits of the IC. This ground
should be used for decoupling of VDD and VPWR supply.
GND
Ground
Input
Ground
VCAL input is a precision (2.5V, +8.0mV, -20mV over temperature)
reference input, used in several internal circuits. A 1.0nF to 10nF
decoupling capacitor is required on the VCAL input pin to ground.
VCAL
Voltage Calibrated
Input
The VDD pin supplies power to the Serial Output (SO) buffer along with
the pull up current sources for the chip select (CS) and DEFAULT inputs.
33
34
VDD
SO
Power Input Digital Voltage Supply
The SO output pin is used to transmit serial data from the device to the
MCU. The SO pin remains tri-stated until selected by the active low CS.
The serial output data is available to be latched by the MCU on the rising
edge of SCLK. The SO data transitions on falling edge of the SCLK.
Output
Serial Output Data
The DEFAULT pin is an active high input.
35
DEFAULT
Input
Default Mode Enable
OSS Output 1-8
Octal Serial Switch (OSS) low side driver output 1-8.
36-38, 40, OUT1-OUT8
41-43, 45
Output
33800
Analog Integrated Circuit Device Data
Freescale Semiconductor
4
FREESCALE [ Freescale ]
