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TC55VEM208ASTN40 데이터시트(PDF) 1 Page - Toshiba Semiconductor |
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TC55VEM208ASTN40 데이터시트(HTML) 1 Page - Toshiba Semiconductor |
1 / 11 page TC55VEM208ASTN40,55 2002-08-07 1/11 (Normal) 17 32 16 1 TENTATIVE TOSHIBA MOS DIGITAL INTEGRATED CIRCUIT SILICON GATE CMOS 524,288-WORD BY 8-BIT STATIC RAM DESCRIPTION The TC55VEM208ASTN is a 4,194,304-bit static random access memory (SRAM) organized as 524,288 words by 8 bits. Fabricated using Toshiba's CMOS Silicon gate process technology, this device operates from a single 2.3 to 3.6 V power supply. Advanced circuit technology provides both high speed and low power at an operating current of 3 mA/MHz (typ) and a minimum cycle time of 40 ns. It is automatically placed in low-power mode at 0.7 µA standby current (typ) when chip enable ( CE ) is asserted high. There are two control inputs. CE is used to select the device and for data retention control, and output enable ( OE ) provides fast memory access. This device is well suited to various microprocessor system applications where high speed, low power and battery backup are required. The TC55VEM208ASTN is available in a plastic 32-pin thin-small-outline package (TSOP). FEATURES • Low-power dissipation Operating: 9 mW/MHz (typical) • Single power supply voltage of 2.3 to 3.6 V • Power down features using CE • Data retention supply voltage of 1.5 to 3.6 V • Direct TTL compatibility for all inputs and outputs • Wide operating temperature range of −40° to 85°C • Standby Current (maximum): 3.6 V 10 µA 3.0 V 5 µA PIN ASSIGNMENT (TOP VIEW) 32 PIN TSOP PIN NAMES A0~A18 Address Inputs R/W Read/Write Control OE Output Enable CE Chip Enable I/O1~I/O8 Data Inputs/Outputs VDD Power GND Ground Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin Name A11 A9 A8 A13 R/W A17 A15 VDD A18 A16 A14 A12 A7 A6 A5 A4 Pin No. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Pin Name A3 A2 A1 A0 I/O1 I/O2 I/O3 GND I/O4 I/O5 I/O6 I/O7 I/O8 CE A10 OE • Access Times: TC55VEM208ASTN 40 55 Access Time 40 ns 55 ns CE Access Time 40 ns 55 ns OE Access Time 25 ns 30 ns • Package: TSOPⅠ32-P-0.50 (Weight:0.22 g typ) |
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