MPC9446 Просмотр технического описания (PDF) - Freescale Semiconductor

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MPC9446

LOW VOLTAGE SINGLE OR DUAL SUPPLY 2.5 V AND 3.3 V LVCMOS CLOCK DISTRIBUTION BUFFER

Freescale Semiconductor 

Table 1. Pin Configuration

Pin

CCLK0,1

FSELA, FSELB, FSELC

MR/OE

GND

VCCA, VCCB(1), VCCC

VCC

QA0 – QA2

QB0 – QB2

QC0 – QC3

I/O

Input

Input

Input

Output

Output

Output

Type

LVCMOS

LVCMOS

LVCMOS

Supply

Supply

Supply

LVCMOS

LVCMOS

LVCMOS

Function

LVCMOS clock inputs

Output bank divide select input

Internal reset and output (high impedance) control

Negative voltage supply (GND)

Positive voltage supply for output banks

Positive voltage supply for core (VCC)

Bank A outputs

Bank B outputs

Bank C outputs

1. VCCB is internally connected to VCC.

Table 2. Supported Single and Dual Supply Configurations

Supply Voltage Configuration

3.3 V

Mixed Voltage Supply

2.5 V

VCC(1)

3.3 V

3.3 V

2.5 V

VCCA(2)

3.3 V

3.3 V or 2.5 V

2.5 V

VCCB(3)

3.3 V

3.3 V

2.5 V

VCCC(4)

3.3 V

3.3 V or 2.5 V

2.5 V

GND

0V

0V

0V

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

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

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.

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

Table 3. Function Table (Controls)

Control

CCLK_SEL

FSELA

FSELB

FSELC

MR/OE

Default

0

0

0

0

0

0

CCLK0

fQA0:2 = fREF

fQB0:2 = fREF

fQC0:3 = fREF

Outputs enabled

1

CCLK1

fQA0:2 = fREF ÷ 2

fQB0:2 = fREF ÷ 2

fQC0:3 = fREF ÷ 2

Internal reset outputs disabled (tristate)

Table 4. Absolute Maximum Ratings(1)

Symbol

Characteristics

Min

Max

Unit

Condition

VCC

VIN

VOUT

IIN

IOUT

TS

Supply Voltage

DC Input Voltage

DC Output Voltage

DC Input Current

DC Output Current

Storage Temperature

–0.3

3.6

V

–0.3

–0.3

VCC+0.3

V

VCC+0.3

V

±20

mA

±50

mA

–65

125

°C

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.

Advanced Clock Drivers Devices

Freescale Semiconductor

MPC9446

3

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