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68K1MSI-7

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68K1MSI-7 数据手册

T68 K/S/R 1M Family

Low Power 1M (128Kx8)-Bits Static RAM

DESCRIPTION

The T68K1M, T68S1M, and T68R1M device family is a low power and high performance

CMOS SRAM organized as 131,072 words by 8 bits. It operates from 2.7V to 3.6V, 2.2V to

2.7V, and 1.65V to 2.2V. Easy memory expansion is provided by an active LOW chip enable 1

(/CE1), active HIGH chp enable 2 (CE2) and active LOW output enable (/OE) and three-state

I/O drivers. Four control pins (/CE1, CE2, /OE, and /WE) fully control the operation mode of the

T68 K/S/R 1M device family. An active LOW write enable signal (/WE active low) controls the

write/read operation of the memory. When /CE1 and /WE inputs go LOW and CE2 input goes

HIGH simultaneously, the device is in write mode and data on the 8 data pins (IO1~IO8) is

written into the memory location specified by the address on address pins (A0~A16). When

/CE1 and /OE inputs go LOW and CE2 and /WE input stay in HIGH state, the device is in read

mode and data in the specified memory address is driven onto the 8 data pins. The 8 data pins

will be in high-impedance state if both /OE and /WE pins are in HIGH (inactive) state. The T68

K/S/R 1M device family has an automatically power-down feature when the chip is deselected

(/CE1 pin HIGH or CE2 pin LOW). The T68 K/S/R 1M device family is available in JEDEC

standard 32-pin 450-mil SOP, 32-pin 8mmx20mm plastic TSOP, 32-pin 8mmx13.4mm plastic

STSOP, and 36-ball 6mmx8mm BGA package, also for DICE.

FEATURES

—

Operation voltage……………… T68K1M…………………………….................2.7V ~ 3.6V

T68S1M……………………………………….. 2.2V ~ 2.7V

T68R1M………………………….................. 1.65V ~ 2.2V

Low active power and standby power

—

High access times: 70ns/85ns/100ns

TTL-compatible inputs and outputs

Easy memory expansion with /CE1, CE2 and /OE

Low data retention voltage…………………………..2.0V (for K), 1.5V (for S), 1.0V (for R)

Auto power down when deselected

2003-REV 090

TIWIN Semiconductor · www.tiwin.com.tw · Tel :(886)-3-5636031 · Fax:(886)-3-5644823

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