WT8048N2 ETC-unknow, WT8048N2 Datasheet

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WT8048N2

Manufacturer Part Number
WT8048N2
Description
Manufacturer
ETC-unknow
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
WT8048N2
Manufacturer:
CATALYST
Quantity:
70
Part Number:
WT8048N2
Manufacturer:
WEITFEND
Quantity:
20 000
DESCRIPTION
The WT8048 is a 8 pin P-DIP package IC, designed for the application of Power Saving
Monitor or Green Monitor.
As per DPMS proposal, the WT8048 provides a detective circuit of monitor power
management for the convenience of designers in designing Power Saving Monitor.
FEATURES
{ Accepting two seperated H&V synchronous signals with positive/ negative polarity.
{ Capable of processing horizontal frequency between 0Hz to 100kHz, and vertical
frequency between 0Hz to 100Hz.
{ Power Saving mode - It can detect the conditions of monitor to decide which will be
selected as following: ON mode / STAND_BY mode / SUSPEND mode / OFF mode.
{ An Override mode is defined to override the DPMS function during the design, test,
burn-in manufacture or diagnostic process if desired.
APPLICATION
{ DPMS mode's detection for Green Monitor
Weltrend Semiconductor, Inc.
eltrend
2F., No. 24, Ind. E. 9th Rd., Science-Based Ind. Park,
Hsin-Chu, Taiwan, R. O. C.
Tel: 886-35-780241
Signaling) Detector for Green Monitor
DPMS (Display Power Management
Fax: 886-35-7704191
WT8048
Aug. 31, 1995

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WT8048N2 Summary of contents

Page 1

DESCRIPTION The WT8048 pin P-DIP package IC, designed for the application of Power Saving Monitor or Green Monitor. As per DPMS proposal, the WT8048 provides a detective circuit of monitor power management for the convenience of ...

Page 2

... ORDERING INFORMATION Part No. Package WT8048 P-DIP 8L WT8048N1 P-DIP 8L WT8048N2 P-DIP 8L *WT8048N3 P-DIP 8L *WT8048N4 P-DIP 8L Note: "*" means "not available". PIN CONFIGURATION WT8048N1 / N3 HIN 1 8 VIN OSC 3 VSS 5 4 Description OSC with 32768Hz Crystal 1. OSC with external resistor 2. With mute function 1 ...

Page 3

ABSOLUTE MAXIMUM RATING ITEM Digital Supply Voltage Horizontal Sync. Input Voltage Vertical Sync. Input Voltage Power dissipation Operating Temperature Range Storage Temperature Range RECOMMENDED OPERATING CONDITIONS ITEM Digital Supply Voltage Supply Current (Stand-by) Synchronous Input Voltage Low Synchronous Input ...

Page 4

ELECTRICAL CHARACTERISTICS A. WT8048 =24¢ =5V, T =32768Hz) DD OPT OSC ITEM Input Current ( when Open Drain Output Low, when I Open Drain Sink Current, when V Input ...

Page 5

PIN DESCRIPTION Pin No. Name WT8048N1 WT8048/ /N3 N2/ SIN SIN 3 3 OSC STD_BY 5 Mute 6 Suspend 6 Suspend + STD_BY 7 7 Off 8 8 ...

Page 6

APPLICATION DESCRIPTION DPMS (Display Power Management Signaling) Dection As per DPMS proposal WT8048 provides Monitor Power Management Detection Circuit for the convenience of monitor designers in designing power saving minitors, or the so called "Green Monitors". Please refer to ...

Page 7

The Way WT8048 implements VESA DPMS As shown on Table 2, when H_SYNC / V_SYNC signals transition from ON state to any one of the three power saving state, WT8048 will delay 5.9 seconds to meet the VESA DPMS ...

Page 8

Synchronization Signals The basis of DPMS standard is the condition of the synchronization signals to the display. Two conditions are defined: pulses and no pulses. { PULSES pulses for the Horizontal Sync. Signal are defined as greater than 10KHz ...

Page 9

OVERRIDE mode To initiate Override, both the horizontal and vertical sync signals shall be in the no pulses condition when the display is manually powered on. This condition should be maintained during the entire time Override is required. As ...

Page 10

WT8048N1 / N2: HSIN 10k VDD 10p 68K VSIN 10k or 100p 75k NOTE: Connect pin 3 with single resistor for RC oscillation. WT8048N3 / N4: HSIN 10k 10p VSIN 10k 100p 3.58 MHz NOTE: 1. Connect pin 3 ...

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