wt8048 ETC-unknow, wt8048 Datasheet
wt8048
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wt8048 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 designers in designing Power Saving Monitor. FEATURES { Accepting two seperated H&V synchronous signals with positive/ negative polarity. ...
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... 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 WT8048 / HIN 1 VDD VIN OFF 2 STD_BY + OSC 3 ...
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... Synchronous Input Voltage High SYMBOL VALUE V 5 (5)+0 (5)+0 0¡ ã OPT ã -40¡ STG SYMBOL MIN. TYP. V ( WT8048 UNIT ¢ J ¢ J MAX. UNIT ...
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... DD OPT OSC ITEM Input Current ( when Open Drain Output Low, when I Open Drain Sink Current, when V Input Current (OSC), when WT8048N3 / N4 =24¢ =5V 3.58MHz) DD OPT OSC ITEM Input Current ( when Open Drain Output Low, when I ...
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... Ground Indicate in Stand_By mode Indicate in Mute mode Indicate in Suspend mode Indicate in Suspend and stand_By mode Indicate in Off mode 5 volts power supply WT8048 Structure of Terminal Input, TTL compatible Input, TTL compatible Input Output, open drain Output, open drain ...
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... Pulse No Pulses Off No Pulses No Pulses * "No Pulse" represents the frequency of Hsin or Vsin less than or equal to 10Hz, but "Pulses" represents that frequency of Hsin greater than or equal to 15KHz (WT8048), 10KHz (WT8048N1 / N4) and Vsin greater than or equal to 40Hz. DPMS Power Compliance Video Savings ...
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... 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 requirement: the minimum 5 seconds delay to avoid unintentionally entering a power saving state during display resolution and timing mode changes. If during this delay time period, H_SYN and V_SYN signals return to ON state, then all three power management pins will remain ON state ...
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... NO PULSES No pulses is defined as less than 10Hz repetition frequency with less than 25% duty cycle Please refer to the Fig. 1 for the way WT8048 Implement pulses/ no pulses state, between 10Hz and 15KHz / 10KHz, 10Hz and 40Hz. WT8048 use hystersis technique to stable state in between. STATE ...
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... OFF and Suspend states, so you have three states total, including ON state. TYPICAL APPLICATION CIRCUIT WT8048: HSIN 680 5V VSIN 680 3.3M 10K 945 10K 1 2 470P 32768Hz NOTE: 1. Transistor: 2SC945¡ 2. VDD: +5V ± 10 10K 2 7 10K 3 6 10K £ ] > 300¡ C WT8048 VCC 9 ...
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... 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 with 3.58MHz resonator have good precision of delay time, frequency division point. ...