FM24C256 – 256K-Bit Standard 2-Wire Bus Interface Serial EEPROM
Connection Diagram
Dual-in-Line Package (N) and SO Package (M8)
A0
A1
A2
V
SS
1
2
8
7
V
CC
WP
SCL
SDA
FM24C256
3
4
6
5
See Package Number N08E and M08A
Pin Names
V
SS
SDA
SCL
WP
V
CC
A0, A1, A2
Ground
Serial Data I/O
Serial Clock Input
Write Protect
Power Supply
Device Address Inputs
2
FM24C256 Rev. D.1
www.fairchildsemi.com
FM24C256 – 256K-Bit Standard 2-Wire Bus Interface Serial EEPROM
Ordering Information
FM
24
C
XX
F
LZ
E
YY
X
Letter
Blank
X
Package
Temp. Range
N
M8
Blank
E
V
Blank
L
LZ
Blank
F
256
C
Interface
24
FM
Description
Tube
Tape and Reel
8-pin DIP
8-pin SOIC
0 to 70
°C
-40 to +85
°C
-40 to +125
°C
4.5V to 5.5V
2.7V to 5.5V
2.7V to 5.5V and
<1µA Standby Current
100KHz
400KHz
256K with write protect
CMOS
IIC - 2 Wire
Fairchild Non-Volatile
Memory
Voltage Operating Range
SCL Clock Frequency
Density
3
FM24C256 Rev. D.1
www.fairchildsemi.com
FM24C256 – 256K-Bit Standard 2-Wire Bus Interface Serial EEPROM
Product Specifications
Absolute Maximum Ratings
Ambient Storage Temperature
All Input or Output Voltages
with Respect to Ground
Lead Temperature
(Soldering, 10 seconds)
ESD Rating
–65°C to +150
°C
6.5V to –0.3V
+300°C
2000V min.
Operating Conditions
Ambient Operating Temperature
FM24C256
FM24C256E
FM24C256V
Positive Power Supply
FM24C256
FM24C256L
FM24C256LZ
0°C to +70
°C
-40°C to +85
°C
-40°C to +125
°C
4.5V to 5.5V
2.7V to 5.5V
2.7V to 5.5V
Standard V
CC
(4.5V to 5.5V) DC Electrical Characteristics
Symbol
Parameter
Test Conditions
Min
I
CCA
I
SB
I
LI
I
LO
V
IL
V
IH
V
OL
Active Power Supply Current
Standby Current
Input Leakage Current
Output Leakage Current
Input Low Voltage
Input High Voltage
Output Low Voltage
I
OL
= 2.1 mA
f
SCL
= 400 KHz
f
SCL
= 100 KHz
V
IN
= GND or V
CC
V
IN
= GND to V
CC
V
OUT
= GND to V
CC
–0.3
V
CC
x 0.7
Limits
Typ
(Note 1)
0.5
10
0.1
0.1
Units
Max
1.0
50
1
1
V
CC
x 0.3
V
CC
+ 0.5
0.4
mA
µA
µA
µA
V
V
V
Low V
CC
(2.7V to 5 .5V) DC Electrical Characteristics
Symbol
Parameter
Test Conditions
Min
I
CCA
I
SB
(Note 3)
I
LI
I
LO
V
IL
V
IH
V
OL
Active Power Supply Current
Standby Current
f
SCL
= 400 KHz
f
SCL
= 100 KHz
V
IN
= GND
or V
CC
V
CC
= 2.7V - 4.5V (L)
V
CC
= 2.7V - 4.5V (LZ)
V
CC
= 4.5V - 5.5V
Limits
Typ
(Note 1)
0.5
1
0.1
10
0.1
0.1
Units
Max
1.0
10
1
50
1
1
V
CC
x 0.3
V
CC
+ 0.5
0.4
mA
µA
µA
µA
µA
µA
V
V
V
Input Leakage Current
Output Leakage Current
Input Low Voltage
Input High Voltage
Output Low Voltage
V
IN
= GND to V
CC
V
OUT
= GND to V
CC
–0.3
V
CC
x 0.7
I
OL
= 2.1 mA
Capacitance
T
A
= +25°C, f = 100/400 KHz, V
CC
= 5V
(Note 2)
Symbol
C
I/O
C
IN
Test
Input/Output Capacitance (SDA)
Input Capacitance (A0, A1, A2, SCL)
A
= 25°C and nominal supply voltage (5V).
Conditions
V
I/O
= 0V
V
IN
= 0V
Max
8
6
Units
pF
pF
Note 1:
Typical values are T
Note 2:
This parameter is periodically sampled and not 100% tested.
Note 3:
The "L" and "LZ" versions can be operated in the 2.7V to 5.5V V
CC
range. However the I
SB
values for L and LZ are applicable only when V
CC
is in the 2.7V to 4.5V range.
4
FM24C256 Rev. D.1
www.fairchildsemi.com
FM24C256 – 256K-Bit Standard 2-Wire Bus Interface Serial EEPROM
AC Test Conditions
Input Pulse Levels
Input Rise and Fall Times
Input & Output Timing Levels
Output Load
V
CC
x 0.1 to V
CC
x 0.9
10 ns
V
CC
x 0.3 to V
CC
x 0.7
1 TTL Gate and C
L
= 100 pF
AC Testing Input/Output Waveforms
0.9V
CC
0.1V
CC
0.7V
CC
0.3V
CC
Read and Write Cycle Limits (Standard and Low V
CC
Range 2.7V - 5.5V)
Symbol
f
SCL
T
I
Parameter
SCL Clock Frequency
Noise Suppression Time Constant at
SCL, SDA Inputs (Minimum V
IN
Pulse width)
SCL Low to SDA Data Out Valid
Time the Bus Must Be Free before
a New Transmission Can Start
Start Condition Hold Time
Clock Low Period
Clock High Period
Start Condition Setup Time
(for a Repeated Start Condition)
Data in Hold Time
Data in Setup Time
SDA and SCL Rise Time
SDA and SCL Fall Time
Stop Condition Setup Time
Data Out Hold Time
Write Cycle Time
100 KHz
Min
Max
100
100
0.3
4.7
4.0
4.7
4.0
4.7
0
250
1
300
4.7
`100
6
3.5
400 KHz
Min
Max
400
50
0.1
1.3
0.6
1.5
0.6
0.6
0
120
0.3
300
0.6
50
6
0.9
Units
KHz
ns
µs
µs
µs
µs
µs
µs
ns
ns
µs
ns
µs
ns
ms
t
AA
t
BUF
t
HD:STA
t
LOW
t
HIGH
t
SU:STA
t
HD:DAT
t
SU:DAT
t
R
t
F
t
SU:STO
t
DH
t
WR
Note 4:
The write cycle time (t
WR
) is the time from a valid stop condition of a write sequence to the end of the internal erase/program cycle. During the write cycle,
the FM24C256 bus interface circuits are disabled, SDA is allowed to remain high per the bus-level pull-up resistor, and the device does not respond to its slave
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