33800 datasheet(4/39 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

33800

PIN CONNECTIONS

Input

Input Seven

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.

16,17, 18, 19,

20, 21

PWMX

Input

Pulse Width

Modulated Input

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.

CCD2_GND

Ground

CCD2 Ground

The CCD2_GND pin provides a dedicated ground for the CCD2 constant

current controller

CCD2_OUT

Output

Current Controlled

Driver 2 Output

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.

CCD2_REC

Input

Current Controlled

Driver 2 Recirculation

Input

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.

Input

ENABLE

The EN pin is an active high input.

RI_REF

Output

Resistor for Current

Reference

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 39.2k

Ω 1% resistor to

ground will set the 1FF programmed current value of the CCD1 to

1075mA and the CCD2 to be 232mA.

CCD1_OUT

Output

Current Controlled

Driver 1 Output

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.

CCD1_REC

Input

Current Controlled

Driver 1 Recirculation

Input

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.

CCD1_GND

Ground

CCD1 Ground

The CCD1_GND pin provides a dedicated ground for the CCD1 constant

current controller

VPWR

Power Input Analog Voltage Supply

The VPWR pin provides power to all pre-driver, driver and output circuits

and other internal functions such as the oscillator and SPI circuits.

GND

Ground

Analog ground for the internal control circuits of the IC. This ground

should be used for decoupling of VDD and VPWR supply.

VCAL

Input

Voltage Calibrated

Input

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.

VDD

Power Input

Digital Voltage Supply

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.

Output

Serial Output Data

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.

DEFAULT

Input

Default Mode Enable

The DEFAULT pin is an active high input.

36-38, 40,

41-43, 45

OUT1-OUT8

Output

OSS Output 1-8

Octal Serial Switch (OSS) low side driver output 1-8.

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

33800 Datasheet(PDF) 4 Page - Freescale Semiconductor, Inc

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