FM24C64B 데이터 시트보기 (PDF) - Ramtron International Corporation

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FM24C64B

64Kb Serial 5V F-RAM Memory

Ramtron International Corporation 

AC Test Conditions

Input Pulse Levels

Input rise and fall times

Input and output timing levels

0.1 VDD to 0.9 VDD

10 ns

0.5 VDD

Diagram Notes

All start and stop timing parameters apply to both read and write

cycles. Clock specifications are identical for read and write cycles.

Write timing parameters apply to slave address, word address, and

write data bits. Functional relationships are illustrated in the relevant

data sheet sections. These diagrams illustrate the timing parameters

only.

FM24C64B

Equivalent AC Load Circuit

5.5V

Output

1700 Ω

100 pF

Read Bus Timing

tR

t F t HIGH

t LOW

t SP

t SP

SCL

SDA

t SU:SDA

t BUF

1/fSCL

t

t HD:DAT

SU:DAT

Start

Stop Start

t AA

t DH

Acknowledge

Write Bus Timing

SCL

SDA

t SU:STO

t HD:STA

t HD:DAT

t SU:DAT

Start

Stop Start

t AA

Acknowledge

Data Retention

Symbol

Parameter

TDR

@ +85ºC

@ +80ºC

@ +75ºC

Min

Max

Units

Notes

10

-

Years

19

-

Years

38

-

Years

Rev. 1.3

Feb. 2011

10 of 12

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