UPD4992GS-E2 Renesas Electronics Corporation., UPD4992GS-E2 Datasheet
UPD4992GS-E2
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UPD4992GS-E2 Summary of contents
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PRELIMINARY DATA SHEET The PD4992 is a CMOS integrated circuit which outputs 8-bit parallel time and calendar data in a system in which a microprocessor is employed. The PD4992 operates at 32.768 kHz and provides year, month, day of month, ...
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PIN CONFIGURATION BLOCK DIAGRAM OSC OUT ...
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ABSOLUTE MAXIMUM RATINGS (V Item Symbol Supply voltage V Input voltage range V Output pin withstand voltage V OUT Low level output current I OUT (N ch Open Drain) Operating temperature range T opt Storage temperature range T ELECTRICAL CHARACTERISTICS ...
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WRITE CYCLE TIMING WAVEFORMS 1 ADDRESS OHZ D OUT D IN WRITE CYCLE TIMING WAVEFORMS 2 ( ADDRESS OUT ...
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READ CYCLE (unless otherwise specified V Item Symbol Cycle time t RC Address access time access time t ACS RD - output delay time output delay time t OLZ RD - output ...
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PIN FUNCTION Pin symbol Pin name CS Chip select input 1 CS Chip select input 2 WR Write signal input RD Read signal input Data input/output Address input Timing ...
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REGISTER – ADDRESS CORRESPONDENCE TABLE ADDRESS HEX BIN 000B 10s second digit 1H 001B 10s minute digit 2H 010B 12/24H AM/PM 3H 011B Leap year control 4H 100B 10s day digit 5H 101B 10s month digit 6H ...
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MODE REGISTER (R/W) HEX CONTROL REGISTER Access mode b3 0 When writing 1 * When reading (Don’t care When TP enable is ...
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TIME COUNTER 1s second digit 10s seocnd digit 1s minute digit 10s minute digit 1s hour digit 10s hour digit Day of week digit Hour 24 hour mode AM 1 o’clock 01H AM 2 o’clock 02H AM 3 o’clock 03H ...
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TYPICAL INT CONTROL EXAMPLES (mode register: INT output mode) (1) Use of INT reset (example 1) T INT reset (2) Use of INT reset (example 2) T INT output INT reset (3) Use of INT stop (example 1) INT output ...
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Use of INT reset, INT stop t 1 INT output (6) Use of TP enable INT output T INT INT Clear stop reset INT stop DISABLE ENABLE PD4992 11 ...
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TP OUTPUT (mode register: TP output mode BUSY SIGNAL Internal counter 1 Hz Busy signal output The time and calendar data read out when BUSY signal is being output may not be correct. This is because, the ...
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OUTLINE DRAWING 20PIN PLASTIC DIP (300 mil NOTES 1) Each lead centerline is located within 0.25 mm (0.01 inch) of its true position (T.P.) at maximum material condition. 2) ltem "K" to ...
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PIN PLASTIC SOP (300 mil NOTE Each lead centerline is located within 0.12 mm (0.005 inch) of its true position (T.P.) at maximum material condition PD4992 detail ...
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RECOMMENDED SOLDERING CONDITIONS The following conditions (see table below) must be met when soldering this product. Please consult with our sales offices in case other soldering process is used case soldering is done under different conditions. TYPES OF ...
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No part of this document may be copied or reproduced in any form or by any means without the prior written consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in this document. ...