PC87365 datasheet(206/215 Pages) NSC

Nome de Peças	PC87365

Descrição Electrónicos	128-Pin LPC SuperI/O with System Hardware Monitoring

PDF	215 Pages

Scroll/Zoom	100%

Fabricante Electrônico	NSC [National Semiconductor (TI)]

Página de início	http://www.national.com

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12.0 Device Characteristics (Continued)

206

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12.5 AC ELECTRICAL CHARACTERISTICS

12.5.1

AC Test Conditions

Figure 41. AC Test Conditions, TA =0 °Cto70 °C, VDD = 5.0V ±10%

Notes:

1. CL = 100 pF for all output pins except OPCI, and CL = 50pF for outputs of type OPCI. These values include both jig and

scope capacitance.

2. S1 = Open for push-pull output pins.

S1 = VDD for high impedance to active low and active low to high-impedance measurements.

S1 = GND for high impedance to active high and active high to high-impedance measurements.

RL = 1.0KΩ for µP interface pins.

3. For the FDC open-drive interface pins, S1 = VDD and RL = 150Ω.

12.5.2

Clock Timing

Symbol

Parameter

48 MHz

Min

Max

Unit

tCH

Clock High Pulse Width1

1. Not tested. Guaranteed by design.

8.4

tCL

Clock Low Pulse Width1

8.4

tCP

Clock Period1

21.5

Device

Under

Test

0.1

µf

Input

Output

Load Circuit (Notes 1, 2, 3)

AC Testing Input, Output Waveform

VDD

2.4

0.4

2.0

0.8

Test Points

2.0

0.8

CLKIN

tCL

tCP

tCH

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