mcz33800ek/r2 Freescale Semiconductor, Inc, mcz33800ek/r2 Datasheet - Page 4

• Manufacturer Part Number: mcz33800ek/r2
• Description: Engine Control Integrated Circuit
• Manufacturer: Freescale Semiconductor, Inc

Table 1. 33800 Pin Definitions(continued)
4
33800
PIN CONNECTIONS
16,17, 18, 19,
Pin Number
36-38, 40,
41-43, 45
A functional description of each pin can be found in the Functional Pin Description section beginning on
20, 21
15
22
23
24
25
26
27
28
29
30
31
32
33
34
35
OUT1-OUT8
CCD2_GND
CCD1_GND
CCD2_OUT
CCD2_REC
CCD1_OUT
CCD1_REC
Pin Name
DEFAULT
RI_REF
PWMX
VPWR
VCAL
GND
VDD
EN
SO
P7
Pin Function
Power Input Analog Voltage Supply The VPWR pin provides power to all pre-driver, driver and output circuits
Power Input Digital Voltage Supply
Ground
Ground
Ground
Output
Output
Output
Output
Output
Input
Input
Input
Input
Input
Input
Input
Driver 2 Recirculation
Driver 1 Recirculation
Default Mode Enable
Resistor for Current
Current Controlled
Current Controlled
Current Controlled
Current Controlled
Voltage Calibrated
Serial Output Data
Modulated Input
OSS Output 1-8
Driver 2 Output
Driver 1 Output
Formal Name
CCD2 Ground
CCD1 Ground
Input Seven
Pulse Width
Reference
ENABLE
Ground
Input
Input
Input
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.
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.
The CCD2_GND pin provides a dedicated ground for the CCD2 constant
current controller
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.
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.
The EN pin is an active high input.
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.
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.
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.
The CCD1_GND pin provides a dedicated ground for the CCD1 constant
current controller
and other internal functions such as the oscillator and SPI circuits.
Analog ground for the internal control circuits of the IC. This ground
should be used for decoupling of VDD and VPWR supply.
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.
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.
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.
The DEFAULT pin is an active high input.
Octal Serial Switch (OSS) low side driver output 1-8.
Analog Integrated Circuit Device Data
Definition
Freescale Semiconductor
page
16.