MPC9446 datasheet(3/12 Pages) FREESCALE

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Advanced Clock Drivers Devices

Freescale Semiconductor

MPC9446

Table 1. Pin Configuration

I/O

Type

Function

CCLK0,1

Input

LVCMOS

LVCMOS clock inputs

FSELA, FSELB, FSELC

Input

LVCMOS

Output bank divide select input

MR/OE

Input

LVCMOS

Internal reset and output (high impedance) control

GND

Supply

Negative voltage supply (GND)

VCCA, VCCB(1), VCCC

1. VCCB is internally connected to VCC.

Supply

Positive voltage supply for output banks

VCC

Supply

Positive voltage supply for core (VCC)

QA0 – QA2

Output

LVCMOS

Bank A outputs

QB0 – QB2

Output

LVCMOS

Bank B outputs

QC0 – QC3

Output

LVCMOS

Bank C outputs

Table 2. Supported Single and Dual Supply Configurations

Supply Voltage Configuration

VCC(1)

1. VCC is the positive power supply of the device core and input circuitry. VCC voltage defines the input threshold and levels.

VCCA(2)

2. VCCA is the positive power supply of the bank A outputs. VCCA voltage defines bank A output levels.

VCCB(3)

3. VCCB is the positive power supply of the bank B outputs. VCCB voltage defines bank B output levels. VCCB is internally connected to VCC.

VCCC(4)

4. VCCC is the positive power supply of the bank C outputs. VCCC voltage defines bank C output levels.

GND

3.3 V

0 V

Mixed Voltage Supply

3.3 V

3.3 V or 2.5 V

3.3 V

3.3 V or 2.5 V

0 V

2.5 V

0 V

Table 3. Function Table (Controls)

Control

Default

CCLK_SEL

CCLK0

CCLK1

FSELA

fQA0:2 = fREF

fQA0:2 = fREF ÷ 2

FSELB

fQB0:2 = fREF

fQB0:2 = fREF ÷ 2

FSELC

fQC0:3 = fREF

fQC0:3 = fREF ÷ 2

MR/OE

Outputs enabled

Internal reset outputs disabled (tristate)

Table 4. Absolute Maximum Ratings(1)

1. Absolute maximum continuous ratings are those maximum values beyond which damage to the device may occur. Exposure to these

conditions or conditions beyond those indicated may adversely affect device reliability. Functional operation under absolute-maximum-rated

conditions is not implied.

Symbol

Characteristics

Min

Max

Unit

Condition

VCC

Supply Voltage

–0.3

3.6

VIN

DC Input Voltage

–0.3

VCC+0.3

VOUT

DC Output Voltage

–0.3

VCC+0.3

IIN

DC Input Current

±20

IOUT

DC Output Current

±50

Storage Temperature

–65

125

°C

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