FM24C64 查看數據表（PDF） - Ramtron International Corporation

零件编号

产品描述 (功能)

生产厂家

FM24C64

64Kb FRAM Serial 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.

FM24C64

Equivalent AC Load Circuit

5.5V

Output

1700 Ω

100 pF

Read Bus Timing

SCL

tSU:STA

SDA

Start

tR

tBUF

Stop

tF

tHIGH

tLOW

Start

Valid

1/fSCL

Valid

tSU:DAT

tAA

tDH

Data bit 7

from FM24C64

Data bit 6

Data bits

from FM24C64 5-0 from FM24C64

Write Bus Timing

tHD:STA

tHD:DAT

tSP

tSP

tHD:DAT

Acknowledge

to FM24C64

SCL

SDA

tSU:STO

tSU:DAT

Valid

tAA

Valid

Start

Stop

Start

Data/Address bit 7 Data/Address bit 6 Data/Address bit 5-0

to FM24C64

to FM24C64

to FM24C64

Acknowledge

from FM24C64

Data Retention (VDD = 4.5V to 5.5V, +85° C)

Parameter

Min

Data Retention

45

Units

Years

Notes

Rev. 3.0

Mar. 2005

10 of 12

Share Link: