TC55V400AFT70 ,262,144-WORD BY 16-BIT FULL CMOS STATIC RAMTC55V400AFT-55,-70 TOSHIBA MOS DIGITAL INTEGRATED CIRCUIT SILICON GATE CMOS 262,144-WORD BY 16-BI ..
TC55V400AFT-70 ,262,144-WORD BY 16-BIT FULL CMOS STATIC RAMapplications where high speed, low power and battery backup are required. And, with a guaranteed op ..
TC55V400AFT-70 ,262,144-WORD BY 16-BIT FULL CMOS STATIC RAMTC55V400AFT-55,-70 TOSHIBA MOS DIGITAL INTEGRATED CIRCUIT SILICON GATE CMOS 262,144-WORD BY 16-BI ..
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TC55V400AFT-55-TC55V400AFT70-TC55V400AFT-70
262,144-WORD BY 16-BIT FULL CMOS STATIC RAM
TC55V400AFT-55,-70 TOSHIBA MOS DIGITAL INTEGRATED CIRCUIT SILICON GATE CMOS�
262,144-WORD BY 16-BIT FULL CMOS STATIC RAM
DESCRIPTION The TC55V400AFT is a 4,194,304-bit static random access memory (SRAM) organized as 262,144 words by 16
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. Data byte control pin (LB, UB ) provides lower and upper byte
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
TC55V400AFT can be used in environments exhibiting extreme temperature conditions. The TC55V400AFT is
available in normal and reverse pinout plastic 48-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) PIN NAMES 48 PIN TSOP Access Times (maximum): Package:
TSOPⅠ48-P-1214-0.50 (AFT) (Weight: 0.38 g typ)
(Normal)
25
48
