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TC55V040AFT-55 |TC55V040AFT55TOSHIBAN/a1400avai524,288-WORD BY 8-BIT FULL CMOS STATIC RAM
TC55V040AFT-70 |TC55V040AFT70TOSHIBAN/a1400avai524,288-WORD BY 8-BIT FULL CMOS STATIC RAM


TC55V040AFT-55 ,524,288-WORD BY 8-BIT FULL CMOS STATIC RAMfeatures using CE1 and CE2  Data retention supply voltage of 1.5 to 3.6 V Access Time 55 ns 70 ns ..
TC55V040AFT-70 ,524,288-WORD BY 8-BIT FULL CMOS STATIC RAMTC55V040AFT-55,-70 TOSHIBA MOS DIGITAL INTEGRATED CIRCUIT SILICON GATE CMOS 524,288-WORD BY 8-BIT ..
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TC55V040AFT-55-TC55V040AFT-70
524,288-WORD BY 8-BIT FULL CMOS STATIC RAM
TC55V040AFT-55,-70 TOSHIBA MOS DIGITAL INTEGRATED CIRCUIT SILICON GATE CMOS�
524,288-WORD BY 8-BIT FULL CMOS STATIC RAM
DESCRIPTION

The TC55V040AFT 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 and a minimum cycle time of 55 ns. It is automatically placed in low-power mode at 0.5 �A standby
current (at VDD � 3 V, Ta � 25°C, maximum) when chip enable (CE1 ) is asserted high or (CE2) is asserted low.
There are three control inputs. CE1 and CE2 are 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. And, with a guaranteed operating
extreme temperature range of �40° to 85°C, the TC55V040AFT can be used in environments exhibiting extreme
temperature conditions. The TC55V040AFT is available in normal and reverse pinout plastic 40-pin
thin-small-outline package (TSOP).
FEATURES
Low-power dissipation
Operating: 10.8 mW/MHz (typical) Single power supply voltage of 2.3 to 3.6 V Power down features usingCE1 and CE2 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):
PIN ASSIGNMENT (TOP VIEW)

40 PIN TSOP PIN NAMES Access Times (maximum): Package:
TSOPⅠ40-P-1014-0.50 (AFT) (Weight: 0.32 g typ)
(Normal)
21
40
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