EEPROM, Serial, 8-Kb I
2
C,
Low Voltage Automotive
Grade 1
NV24C08LV
Description
The NV24C08LV are 8−Kb CMOS Serial EEPROM devices that
operate at a minimum 1.7 V supply voltage. They are organized
internally as 32 and 128 pages respectively of 16 bytes each. All
devices support the Standard (100 kHz), Fast (400 kHz) and Fast−Plus
(1 MHz) I
2
C protocol.
Data is written by providing a starting address, then loading 1 to 16
contiguous bytes into a Page Write Buffer, and then writing all data to
non−volatile memory in one internal write cycle. Data is read by
providing a starting address and then shifting out data serially while
automatically incrementing the internal address count.
External address pins make it possible to address up to two
NV24C08 device on the same bus.
Features
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US8
U SUFFIX
CASE 493
TSSOP−8
DT SUFFIX
CASE 948AL
•
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•
•
•
•
•
•
•
•
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•
Automotive AEC−Q100 Grade 1 (−40°C to +125°C) Qualified
Supports Standard, Fast and Fast−Plus I
2
C Protocol
1.7 V to 5.5 V Supply Voltage Range
16−Byte Page Write Buffer
Fast Write Time (4 ms max)
Hardware Write Protection for Entire Memory
Schmitt Triggers and Noise Suppression Filters on I
2
C Bus Inputs
(SCL and SDA)
Low power CMOS Technology
More than 1,000,000 Program/Erase Cycles
100 Year Data Retention
Automotive Grade 1 Temperature Range
SOIC, TSSOP, US 8−Lead, TSOP−5 Lead and Wettable Flank UDFN
8−pad Packages
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
TSOP−5
SN SUFFIX
CASE 483
UDFN−8
MUW3 SUFFIX
CASE 517DH
SOIC8
DW SUFFIX
CASE 751BD
ORDERING INFORMATION
See detailed ordering, marking and shipping information in the
package dimensions section on page 9 of this data sheet.
PIN CONFIGURATION (SOIC−8,US−8,UNFN−8 ,TSSOP−8)
NV24C08
NC / NC / NC
NC / NC / A
1
NC / A
2
/ A
2
V
SS
2
3
4
1
8
7
6
5
V
CC
WP
SCL
SDA
PIN CONFIGURATION (TSOP−5)
SCL
V
SS
SDA
1
2
3
5
WP
4
V
CC
©
Semiconductor Components Industries, LLC, 2018
May, 2020
−
Rev. 0
1
Publication Order Number:
NV24C08LV/D
NV24C08LV
V
CC
Table 1. PIN FUNCTION
Pin Name
Function
Device Address Input
Serial Data Input/Output
Serial Clock Input
Write Protect Input
Power Supply
Ground
No Connect
A0, A1, A2
SDA
SCL
A
2
, A
1
, A
0
WP
NV24C08LV
SDA
SCL
WP
V
CC
V
SS
NC
V
SS
Figure 1. Functional Symbol
Table 2. ABSOLUTE MAXIMUM RATINGS
Parameters
Storage Temperature
Voltage on any pin with respect to Ground (Note 1)
Ratings
−65
to +150
−0.5
to +6.5
Units
°C
V
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. During input transitions, voltage undershoot on any pin should not exceed
−1
V for more than 20 ns. Voltage overshoot on pins A
0
, A
1
, A
2
and WP should not exceed V
CC
+ 1 V for more than 20 ns, while voltage on the I
2
C bus pins, SCL and SDA, should not exceed the absolute
maximum ratings, irrespective of V
CC
.
Table 3. RELIABILITY CHARACTERISTICS
Symbol
N
END
(Note 2)
T
DR
(Note 2)
Endurance
Data Retention
Parameter
Min
1,000,000
100
Units
Write Cycles (Note 3)
Years
2. T
A
= 25°C
3. A Write Cycle refers to writing a Byte or a Page.
Table 4. D.C. OPERATING CHARACTERISTICS
(V
CC
= 1.7 V to 5.5 V, T
A
=
−40°C
to +125°C, unless otherwise specified.*)
Symbol
I
CCR
I
CCW
I
SB
I
L
V
IL1
V
IL2
V
IH1
V
IH2
V
OL1
V
OL2
Parameter
Read Current
Write Current
Standby Current
Test Conditions
Read, f
SCL
= 1 MHz
Write
All I/O Pins at GND or V
CC
Pin at GND or V
CC
2.2 V
≤
V
CC
≤
5.5 V
1.7 V
≤
V
CC
< 2.2 V
2.2 V
≤
V
CC
≤
5.5 V
1.7 V
≤
V
CC
< 2.2 V
V
CC
≥
2.2 V, I
OL
= 6.0 mA
V
CC
< 2.2 V, I
OL
= 2.0 mA
−0.5
−0.5
0.7 V
CC
0.8 V
CC
T
A
=
−40°C
to +85°C
T
A
=
−40°C
to +125°C
I/O Pin Leakage
Input Low Voltage
Input Low Voltage
Input High Voltage
Input High Voltage
Output Low Voltage
Output Low Voltage
Min
Max
0.3
0.5
1
2
2
0.3 V
CC
0.2 V
CC
V
CC
+ 0.5
V
CC
+ 0.5
0.4
0.2
mA
V
V
V
V
V
V
Units
mA
mA
mA
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
*V
CC(min)
= 1.6 V for Read operations, T
A
=
−20°C
to +85°C.
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NV24C08LV
Table 5. PIN IMPEDANCE CHARACTERISTICS
V
CC
= 1.7 V to 5.5 V, T
A
=
−40°C
to +125°C, unless otherwise specified.*)
Symbol
C
IN
(Note 4)
C
IN
(Note 4)
I
WP
, I
A
(Note 5)
Parameter
SDA I/O Pin Capacitance
Input Capacitance (other pins)
WP Input Current, Address Input
Current (A0, A1, A2)
V
IN
= 0 V
V
IN
= 0 V
V
IN
< V
IH
, V
CC
= 5.5 V
V
IN
< V
IH
, V
CC
= 3.3 V
V
IN
< V
IH
, V
CC
= 1.7 V
V
IN
> V
IH
Conditions
Max
8
6
50
35
25
2
Units
pF
pF
mA
4. These parameters are tested initially and after a design or process change that affects the parameter according to appropriate AEC−Q100
and JEDEC test methods.
5. When not driven, the WP, A0, A1 and A2 pins are pulled down to GND internally. For improved noise immunity, the internal pull−down is relatively
strong; therefore the external driver must be able to supply the pull−down current when attempting to drive the input HIGH. To conserve power,
as the input level exceeds the trip point of the CMOS input buffer (~ 0.5 x V
CC
), the strong pull−down reverts to a weak current source.
*V
CC(min)
= 1.6 V for Read operations, T
A
=
−20°C
to +85°C.
Table 6. A.C. CHARACTERISTICS
V
CC
= 1.7 V to 5.5 V, T
A
=
−40°C
to +125°C, unless otherwise specified.*) (Note 6)
Standard
Symbol
F
SCL
t
HD:STA
t
LOW
t
HIGH
t
SU:STA
t
HD:DAT
t
SU:DAT
t
R
(Note 7)
t
F
(Note 7)
t
SU:STO
t
BUF
t
AA
t
DH
(Note 7)
T
i
(Note 7)
t
SU:WP
t
HD:WP
t
WR
t
PU
(Notes 7, 8)
Parameter
Clock Frequency
START Condition Hold Time
Low Period of SCL Clock
High Period of SCL Clock
START Condition Setup Time
Data In Hold Time
Data In Setup Time
SDA and SCL Rise Time
SDA and SCL Fall Time
STOP Condition Setup Time
Bus Free Time Between
STOP and START
SCL Low to Data Out Valid
Data Out Hold Time
Noise Pulse Filtered at SCL
and SDA Inputs
WP Setup Time
WP Hold Time
Write Cycle Time
Power-up to Ready Mode
0
2.5
4
0.35
100
50
0
2.5
4
0.35
4
4.7
3.5
100
50
0
1
4
0.35
4
4.7
4
4.7
0
250
1,000
300
0.6
1.3
0.9
50
50
Min
Max
100
0.6
1.3
0.6
0.6
0
100
300
300
0.26
0.5
0.45
Min
Fast
Max
400
0.26
0.50
0.26
0.26
0
50
120
120
Fast−Plus
Min
Max
1,000
Units
kHz
ms
ms
ms
ms
ms
ns
ns
ns
ms
ms
ms
ns
ns
ms
ms
ms
ms
6. Test conditions according to “A.C. Test Conditions” table.
7. Tested initially and after a design or process change that affects this parameter.
8. t
PU
is the delay between the time V
CC
is stable and the device is ready to accept commands.
*V
CC(min)
= 1.6 V for Read operations, T
A
=
−20°C
to +85°C.
Table 7. A.C. TEST CONDITIONS
Input Levels
Input Rise and Fall Times
Input Reference Levels
Output Reference Levels
Output Load
0.2 x V
CC
to 0.8 x V
CC
for V
CC
≥
2.2 V
0.15 x V
CC
to 0.85 x V
CC
for V
CC
< 2.2 V
≤
50 ns
0.3 x V
CC
, 0.7 x V
CC
0.3 x V
CC
, 0.7 x V
CC
Current Source: I
OL
= 6 mA (V
CC
≥
2.2 V); I
OL
= 2 mA (V
CC
< 2.2 V); C
L
= 100 pF
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NV24C08LV
Power−On Reset (POR)
Each NV24C08LV incorporates Power−On Reset (POR)
circuitry which protects the internal logic against powering
up in the wrong state.
A NV24C08LV device will power up into Standby mode
after V
CC
exceeds the POR trigger level and will power
down into Reset mode when V
CC
drops below the POR
trigger level. This bi−directional POR feature protects the
device against ‘brown−out’ failure following a temporary
loss of power.
Pin Description
SCL:
The Serial Clock input pin accepts the Serial Clock
generated by the Master.
SDA:
The Serial Data I/O pin receives input data and
transmits data stored in EEPROM. In transmit mode, this pin
is open drain. Data is acquired on the positive edge, and is
delivered on the negative edge of SCL.
A0, A1 and A2:
The Address inputs set the device address
when cascading multiple devices. When not driven, these
pins are pulled LOW internally.
WP:
The Write Protect input pin inhibits all write
operations, when pulled HIGH. When not driven, this pin is
pulled LOW internally.
Functional Description
The NV24C08LV supports the Inter−Integrated Circuit
2
C) Bus data transmission protocol, which defines a device
(I
that sends data to the bus as a transmitter and a device
receiving data as a receiver. Data flow is controlled by a
Master device, which generates the serial clock and all
START and STOP conditions. The NV24C08LV acts as a
Slave device. Master and Slave alternate as either
transmitter or receiver.
The I
2
C bus consists of two ‘wires’, SCL and SDA. The
two wires are connected to the V
CC
supply via pull−up
resistors. Master and Slave devices connect to the 2−wire
bus via their respective SCL and SDA pins. The transmitting
device pulls down the SDA line to ‘transmit’ a ‘0’ and
releases it to ‘transmit’ a ‘1’.
Data transfer may be initiated only when the bus is not
busy (see AC Characteristics).
I
2
C Bus Protocol
During data transfer, the SDA line must remain stable
while the SCL line is high. An SDA transition while SCL is
high will be interpreted as a START or STOP condition
(Figure 2). The START condition precedes all commands. It
consists of a HIGH to LOW transition on SDA while SCL
is HIGH. The START acts as a ‘wake−up’ call to all
receivers. Absent a START, a Slave will not respond to
commands. The STOP condition completes all commands.
It consists of a LOW to HIGH transition on SDA while SCL
is HIGH.
NOTE:
The I/O pins of NV24C08LV do not obstruct the SCL
and SDA lines if the VCC supply is switched off. During
power−up, the SCL and SDA pins (connected with pull−up
resistors to VCC) will follow the VCC monotonically from
VSS (0 V) to nominal VCC value, regardless of pull−up
resistor value. The delta between the VCC and the
instantaneous voltage levels during power ramping will be
determined by the relation between bus time constant
(determined by pull−up resistance and bus capacitance) and
actual VCC ramp rate.
Device Addressing
The Master initiates data transfer by creating a START
condition on the bus. The Master then broadcasts an 8−bit
serial Slave address. For normal Read/Write operations, the
first 4 bits of the Slave address are fixed at 1010 (Ah). The
next 3 bits are used as programmable address bits when
cascading multiple devices and/or as internal address bits.
The last bit of the slave address, R/W, specifies whether a
Read (1) or Write (0) operation is to be performed. The 3
address space extension bits are assigned as illustrated in
Figure 3. A
2
, A
1
and A
0
must match the state of the external
address pins, and a
10
, a
9
and a
8
are internal address bits.
Acknowledge
After processing the Slave address, the Slave responds
with an acknowledge (ACK) by pulling down the SDA line
during the 9th clock cycle (Figure 4). The Slave will also
acknowledge the address byte and every data byte presented
in Write mode. In Read mode the Slave shifts out a data byte,
and then releases the SDA line during the 9
th
clock cycle. As
long as the Master acknowledges the data, the Slave will
continue transmitting. The Master terminates the session by
not acknowledging the last data byte (NoACK) and by
issuing a STOP condition. Bus timing is illustrated in
Figure 5.
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NV24C08LV
SCL
SDA
START
CONDITION
STOP
CONDITION
Figure 2. Start/Stop Timing
1
0
1
0
A
2
a
9
a
8
R/W
N24C08
Figure 3. Slave Address Bits
BUS RELEASE DELAY (TRANSMITTER)
SCL FROM
MASTER
DATA OUTPUT
FROM TRANSMITTER
1
8
9
BUS RELEASE DELAY
(RECEIVER)
DATA OUTPUT
FROM RECEIVER
START
ACK DELAY (v t
AA
)
ACK SETUP (w t
SU:DAT
)
Figure 4. Acknowledge Timing
t
F
t
LOW
SCL
t
SU:STA
SDA IN
t
AA
SDA OUT
t
DH
t
BUF
t
HD:STA
t
HD:DAT
t
SU:DAT
t
SU:STO
t
HIGH
t
LOW
t
R
Figure 5. Bus Timing
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Analogue and Mixed Signal
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