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AT52BR1672 Datasheet(PDF) 31 Page - ATMEL Corporation |
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AT52BR1672 Datasheet(HTML) 31 Page - ATMEL Corporation |
31 / 39 page 31 AT52BR1672(T)/1674(T) 2604B–STKD–09/02 Note: 1. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is stress rating only and the functional operation of the device under these or any other conditions above those indicated in the operation of this specification is not implied. Exposure to the absolute maximum rating conditions for extended period may affect reliability. Notes: 1. H = VIH,L = VIL,X = Don'tCare (VIL or VIH) 2. SUB,SLB (Upper, Lower Byte Enable). These active LOW inputs allow individual bytes to be written or read. When SLB is LOW, data is written or read to the lower byte, I/O0 - I/O7. When SUB is LOW, data is written or read to the upper byte, I/O8 - I/O15. Note: 1. Undershoot: V IL = -1.5V for pulse width less than 30 ns. Undershoot is sampled, not 100% tested. Absolute Maximum Ratings (1) Symbol Parameter Rating Unit VIN,VOUT Input/Output Voltage -0.3 to 3.6 V VCC Power Supply -0.3 to 4.6 V TA Operating Temperature -40 to 85 °C TSTG Storage Temperature -55 to 150 °C P D Power Dissipation 1.0 W Truth Table SCS1 SCS2 SWE SOE SLB (2) SUB (2) Mode I/O Pin Power I/O0 - I/O7 I/O8 - I/O15 H (1) X XX XX Deselected High-Z High-Z Standby X (1) L XX H H L (1) HH H LH Output Disabled High-Z High-Z Active HL LL LH L X LH Write D IN High-Z Active HL High-Z D IN LL D IN D IN DIN High-Z LH HL LH Read DOUT High-Z Active HL High-Z DOUT LL DOUT DOUT D OUT High-Z Recommended DC Operating Condition Symbol Parameter Min Typ Max Unit V CC Supply Voltage 2.7 3.0 3.3 V V SS Ground 0 0 0 V VIH Input High Voltage 2.2 VCC +0.3 V VIL (1) Input Low Voltage -0.31 (1) 0.6 V |
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