W215B Просмотр технического описания (PDF) - Cypress Semiconductor

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W215B

Notebook PC System Frequency Generator for K6 Processors

Cypress Semiconductor 

PRELIMINARY

W215B

48-/24-MHz Clock Output (Test Load: R = 33Ω; C = 22 pF)

Parameter

Description

m/n

PLL Ratio

tR

Output Rise Edge Rate

tF

Output Fall Edge Rate

tD

Duty Cycle

fST

Frequency Stabilization

from Power-up (cold start)

Zo

AC Output Impedance

Test Condition/Comments

Measured on rising and falling edge at 1.5V

Assumes full supply voltage reached within 1 ms

from power-up. Short cycles exist prior to fre-

quency stabilization.

Average value during switching transition. Used

for determining series termination value.

CPU = 100 MHz

Min. Typ. Max.

57/17

0.5

2

0.5

2

45

50

55

3

25

Unit

V/ns

V/ns

%

ms

Ω

Ordering Information

Ordering Code

W215B

Package

Name

X

Package Type

48-pin TSSOP (6.1 mm)

Document #: 38-00886

11

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