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eltrend
WT8048
DPMS (Display Power Management
Signaling) Detector for Green Monitor
Aug. 31, 1995
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.
2F., No. 24, Ind. E. 9th Rd., Science-Based Ind. Park,
Hsin-Chu, Taiwan, R. O. C.
Tel: 886-35-780241 Fax: 886-35-7704191
eltrend
WT8048
ORDERING INFORMATION
Part No.
WT8048
WT8048N1
Package
P-DIP 8L
P-DIP 8L
WT8048N2
P-DIP 8L
*WT8048N3
P-DIP 8L
*WT8048N4
P-DIP 8L
Note: "*" means "not available".
Description
OSC with 32768Hz Crystal
1. OSC with external resistor
2. With mute function
1. OSC with external resistor
2. Without mute function
1. OSC with 3.58MHz resonator
2. With mute function
1. OSC with 3.58MHz resonator
2. Without mute function
PIN CONFIGURATION
WT8048N1 / N3
WT8048 / N2 / N4
HIN 1
VIN 2
OSC
3
VSS
4
8 VDD
HIN 1
7 OFF
VIN 2
6
STD_BY +
SUSPEND
OSC
3
5 MUTE
VSS
4
8 VDD
7 OFF
6 SUSPEND
5 STD_BY
2
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