AT24C16C Automotive - Complete

Atmel AT24C16C
I2C Automotive Temperature Serial EEPROM
16K (2048 x 8)
DATASHEET
Features
 Standard-voltage operation

VCC = 2.5V to 5.5V
 Automotive temperature range –40C to 125C
 Internally organized 2048 x 8 (16K)
 2-wire serial interface compatible with I2C
 Schmitt Trigger, filtered inputs for noise suppression
 Bidirectional data transfer protocol
 400kHz compatibility
 Write protect pin for hardware data protection
 16-byte page write modes
 Partial page writes are allowed
 Self-timed write cycle (5ms max)
 High-reliability


Endurance: 1 million write cycles
Data retention: 100 years
 8-lead JEDEC SOIC and 8-lead TSSOP packages
Description
The Atmel® AT24C16C provides 16384 bits of Serial Electrically Erasable and
Programmable Read-Only Memory (EEPROM) organized as 2048 words of eight bits
each. The device is optimized for use in many automotive applications where
low-power and low-voltage operation are essential. AT24C16C is available in space
saving 8-lead JEDEC SOIC and 8-lead TSSOP packages and is accessed via a 2-wire
serial interface. This device operates from 2.5V to 5.5V.
Figure 1.
Pin Configurations
Pin Name
Function
SDA
Serial Data
SCL
Serial Clock Input
WP
Write Protect
NC
No Connect
8-lead TSSOP
8-lead SOIC
NC
NC
NC
GND
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
NC
NC
NC
GND
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
8799B–SEEPR–8/12
Absolute Maximum Ratings*
Operating Temperature  55C to +125C
Storage Temperature  65C to +150C
Voltage on any pin
with respect to ground 1.0V to +7.0V
Maximum Operating Voltage . . . . . . . . . . . . .6.25V
DC Output Current. . . . . . . . . . . . . . . . . . . . 5.0mA
2.
*Notice: Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent damage
to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect device
reliability.
Block Diagram
VCC
GND
WP
Start
Stop
Logic
SCL
SDA
Serial
Control
Logic
LOAD
Device
Address
Comparator
R/W
EN
COMP
LOAD
Data Word
Addr/Counter
Y DEC
H.V. Pump/Timing
Data Recovery
INC
X DEC
1.
EEPROM
Serial MUX
DOUT/ACK
Logic
DIN
DOUT
Atmel AT24C16C Automotive [DATASHEET]
8799B–SEEPR–8/12
2
3.
Pin Description
Serial Clock (SCL): The SCL input is used to positive edge clock data into each EEPROM device and negative edge
clock data out of each device.
Serial Data (SDA): The SDA pin is bi-directional for serial data transfer. This pin is open-drain driven and may be
wire-ORed with any number of other open-drain or open-collector devices.
Device/Page Addresses (A2, A1, A0): I2C signals A0, A1, and A2 (device package pins 1, 2, and 3) are no connects.
AT24C16C does not use the device address pins, which limits the number of devices on a single bus to one.
Write Protect (WP): AT24C16C has a Write Protect pin that provides hardware data protection. The Write Protect pin
allows normal read/write operations when connected to ground (GND). When the Write Protect pin is connected to VCC,
the write protection feature is enabled and operates as shown in the following table.
Table 3-1.
WP Pin
Status
Write Protect
Part of the Array Protected
Atmel AT24C16C
At VCC
Full (16K) Array
At GND
Normal Read/Write Operations
Atmel AT24C16C Automotive [DATASHEET]
8799B–SEEPR–8/12
3
4.
Memory Organization
AT24C16C, 16K Serial EEPROM: Internally organized with 128 pages of 16 bytes each, the 16K requires an 11-bit data
word address for random word addressing.
4.1
Pin Capacitance(1)
Symbol
Test Condition
CI/O
CIN
Note:
4.2
1.
Max
Units
Conditions
Input/Output Capacitance (SDA)
8
pF
VI/O = 0V
Input Capacitance (SCL)
6
pF
VIN = 0V
This parameter is characterized and is not 100% tested.
DC Characteristics
Applicable over recommended operating range from: TA = -40°C to +125°C,
VCC = +2.5V to +5.5V (unless otherwise noted).
Symbol
Parameter
Max
Units
VCC1
Supply Voltage
5.5
V
ICC
Supply Current VCC = 5.0V
Read at 100kHz
0.4
1.0
mA
ICC
Supply Current VCC = 5.0V
Write at 100kHz
2.0
3.0
mA
ISB1
Standby Current VCC = 2.5V
VIN = VCC or VSS
1.6
4.0
μA
ISB2
Standby Current VCC = 5.0V
VIN = VCC or VSS
4.0
6.0
μA
ILI
Input Leakage Current
VIN = VCC or VSS
0.10
3.0
μA
ILO
Output Leakage Current
VOUT = VCC or VSS
0.05
3.0
μA
VIL
Input Low Level(1)
0.6
VCC x 0.3
V
VIH
Input High Level(1)
VCC x 0.7
VCC + 0.5
V
VOL2
Output Low Level VCC = 3.0V
IOL = 2.1mA
0.4
V
VOL1
Output Low Level VCC = 1.8V
IOL = 0.15mA
0.2
V
Note:
1.
Test Condition
Min
Typ
2.5
VIL min and VIH max are reference only and are not tested.
Atmel AT24C16C Automotive [DATASHEET]
8799B–SEEPR–8/12
4
4.3
AC Characteristics
Applicable over recommended operating range from TA = -40°C to +125°C, VCC = +2.5V to +5.5V, CL = 1 TTL Gate and
100pF (unless otherwise noted).
Atmel AT24C16C
Symbol
Parameter
fSCL
Clock Frequency, SCL
tLOW
Clock Pulse Width Low
1.2
μs
tHIGH
Clock Pulse Width High
0.6
μs
tI
Noise Suppression Time(1)
tAA
Clock Low to Data Out Valid
0.1
tBUF
Time the bus must be free before
a new transmission can start(2)
1.2
μs
tHD.STA
Start Hold Time
0.6
μs
tSU.STA
Start Set-up Time
0.6
μs
tHD.DAT
Data In Hold Time
0
μs
tSU.DAT
Data In Set-up Time
100
ns
tR
Inputs Rise Time(2)
300
ns
tF
Inputs Fall Time(2)
300
ns
tSU.STO
Stop Set-up Time
0.6
μs
tDH
Data Out Hold Time
50
ns
tWR
Write Cycle Time
Endurance(2)
5.0V, 25C, Page Mode
Note:
Min
Max
Units
400
kHz
50
ns
0.9
μs
5
1M
1.
This parameter is characterized and is not 100% tested (TA = 25C).
2.
This parameter is characterized.
ms
Write Cycles
Atmel AT24C16C Automotive [DATASHEET]
8799B–SEEPR–8/12
5
5.
Device Operation
Clock and Data Transitions: The SDA pin is normally pulled high with an external device. Data on the SDA pin may
change only during SCL low time periods (see Figure 5-4 on page 7). Data changes during SCL high periods will indicate
a start or stop condition as defined below.
Start Condition: A high-to-low transition of SDA with SCL high is a start condition which must precede any
other command (see Figure 5-5 on page 7).
Stop Condition: A low-to-high transition of SDA with SCL high is a stop condition. After a read sequence, the stop
command will place the EEPROM in a standby power mode (see Figure 5-5 on page 7).
Acknowledge: All addresses and data words are serially transmitted to and from the EEPROM in 8-bit words. The
EEPROM sends a zero to acknowledge that it has received each word. This happens during the ninth clock cycle.
Standby Mode: AT24C16C features a low-power standby mode which is enabled:

Upon power-up.

After the receipt of the stop bit and the completion of any internal operations.
Memory Reset: After an interruption in protocol, power loss or system reset, any 2-wire part can be reset by following
these steps:
1.
Clock up to nine cycles,
2.
Look for SDA high in each cycle while SCL is high,
3.
Create a start condition.
Figure 5-1. Memory Reset
Dummy Clock Cycles
1
SCL
2
3
8
9
Start
Bit
Start
Bit
Stop
Bit
SDA
Figure 5-2. Bus Timing
SCL: Serial Clock, SDA: Serial Data I/O
tHIGH
tF
tR
tLOW
tLOW
SCL
tSU.STA
tHD.STA
tHD.DAT
tSU.DAT
tSU.STO
SDA In
tAA
tDH
tBUF
SDA Out
Atmel AT24C16C Automotive [DATASHEET]
8799B–SEEPR–8/12
6
Figure 5-3. Write Cycle Timing
SCL: Serial Clock, SDA: Serial Data I/O
SCL
8th bit
SDA
ACK
WORDn
twr(1)
Start
Condition
Stop
Condition
Note:
1.
The write cycle time tWR is the time from a valid stop condition of a write sequence to the end of the internal
clear/write cycle.
Figure 5-4. Data Validity
SDA
SCL
Data Stable
Data Stable
Data
Change
Figure 5-5. Start and Stop Definition
SDA
SCL
Start
Stop
Atmel AT24C16C Automotive [DATASHEET]
8799B–SEEPR–8/12
7
Figure 5-6. Output Acknowledge
1
SCL
8
9
Data In
Data Out
Start
6.
Acknowledge
Device Addressing
The 16K EEPROM requires an 8-bit device address word following a start condition to enable the chip for a read or write
operation (see Figure 8-1 on page 9).
The device address word consists of a mandatory one, zero sequence for the first four most significant bits as shown.
This is common to all the Serial EEPROM devices.
The next three bits are used for memory page addressing. These page addressing bits on the 16K devices should be
considered the most significant bits of the data word address which follows.
The eighth bit of the device address is the read/write operation select bit. A read operation is initiated if this bit is high and
a write operation is initiated if this bit is low.
If the device address meets the requirements listed above, the device will acknowledge with a zero by pulling the SDA
signal low. If the comparison is not made, the device will return to a standby state and the SDA signal will float high.
7.
Write Operations
Byte Write: A write operation requires an 8-bit data word address following the device address word and
acknowledgment. Upon receipt of this address, the EEPROM will again respond with a zero and then clock in the first
8-bit data word. Following receipt of the 8-bit data word, the EEPROM will output a zero and the addressing device, such
as a microcontroller, must terminate the write sequence with a stop condition. At this time the EEPROM enters an
internally timed write cycle, tWR, to the nonvolatile memory. All inputs are disabled during this write cycle and the
EEPROM will not respond until the write is complete (see Figure 8-2 on page 9).
Page Write: The EEPROM is capable of 16-byte page writes.
A Page Write is initiated the same as a Byte Write, but the microcontroller does not send a stop condition after the first
data word is clocked in. Instead, after the EEPROM acknowledges receipt of the first data word, the microcontroller can
transmit up to fifteen more data words. The EEPROM will respond with a zero after each data word received. The
microcontroller must terminate the page write sequence with a stop condition (see Figure 8-3 on page 10).
The data word address lower four bits are internally incremented following the receipt of each data word. The higher data
word address bits are not incremented, retaining the memory page row location. When the word address, internally
generated, reaches the page boundary, the following byte is placed at the beginning of the same page. If more than
sixteen data words are transmitted to the EEPROM, the data word address will roll-over and previous data will be
overwritten.
Atmel AT24C16C Automotive [DATASHEET]
8799B–SEEPR–8/12
8
Acknowledge Polling: Once the internally timed write cycle has started and the EEPROM inputs are disabled,
acknowledge polling can be initiated. This involves sending a start condition followed by the device address word. The
read/write bit is representative of the operation desired. Only if the internal write cycle has completed will the EEPROM
respond with a zero, allowing the read or write sequence to continue.
8.
Read Operations
Read operations are initiated the same way as write operations with the exception that the read/write select bit in the
device address word is set to one. There are three read operations: Current Address Read, Random Address Read, and
Sequential Read.
Current Address Read: The internal data word address counter maintains the last address accessed during the last
read or write operation, incremented by one. This address stays valid between operations as long as the chip power is
maintained. The address roll-over during read is from the last byte of the last memory page to the first byte of the first
page. The address roll-over during write is from the last byte of the current page to the first byte of the same page.
Once the device address with the read/write select bit set to one is clocked in and acknowledged by the EEPROM, the
current address data word is serially clocked out. The microcontroller does not respond with an input zero but does
generate a following stop condition (see Figure 8-4 on page 10).
Random Read: A Random Read requires a dummy byte write sequence to load in the data word address. Once the
device address word and data word address are clocked in and acknowledged by the EEPROM, the microcontroller must
generate another start condition. The microcontroller now initiates a current address read by sending a device address
with the read/write select bit high. The EEPROM acknowledges the device address and serially clocks out the data word.
The microcontroller does not respond with a zero but does generate a following stop condition (see Figure 8-5 on page
10).
Sequential Read: Sequential Reads are initiated by either a Current Address Read or a Random Address Read. After
the microcontroller receives a data word, it responds with an acknowledge. As long as the EEPROM receives an
acknowledge, it will continue to increment the data word address and serially clock out sequential data words. When the
memory address limit is reached, the data word address will roll-over and the Sequential Read will continue. The
Sequential Read operation is terminated when the microcontroller does not send an acknowledge (pull the SDA signal
low), but does generate the stop condition. (see Figure 8-6 on page 10).
Figure 8-1. Device Address
16K
1
0
1
0
P2 P1 P0 R/W
Figure 8-2. Byte Write
S
T
A
R
T
Device Address
W
R
I
T
E
Word Address
S
T
O
P
Data
SDA Line
M
S
B
L R A
S / C
B W K
M
S
B
L A
S C
B K
A
C
K
Atmel AT24C16C Automotive [DATASHEET]
8799B–SEEPR–8/12
9
Figure 8-3. Page Write
S
T
A
R
T
W
R
I
T
E
Device Address
Word Address (n)
Data (n)
Data (n + 1)
S
T
O
P
Data (n + x)
SDA Line
M
S
B
L R A
S / C
B W K
A
C
K
A
C
K
A
C
K
A
C
K
Figure 8-4. Current Address Read
S
T
A
R
T
R
E
A
D
Device
Address
S
T
O
P
Data
SDA Line
M
S
B
N
O
L R A
S / C
B WK
A
C
K
Figure 8-5. Random Read
S
T
A
R
T
Device Address
W
R
I
T
E
S
T
A
R
T
Word Address (n)
R
E
A
Device Address D
S
T
O
P
Data (n)
SDA Line
M
S
B
L R A
S / C
B W K
M
S
B
L A
S C
B K
M
S
B
L
S
B
A
C
K
N
O
A
C
K
Dummy Write
Figure 8-6. Sequential Read
Device
Address
R
E
A
D
Data (n)
A
C
K
Data (n + 1)
A
C
K
Data (n + 2)
A
C
K
S
T
O
P
Data (n + x)
SDA Line
R A
/ C
WK
8.1
N
O
A
C
K
Power Recommendation
The device internal POR (Power-On Reset) threshold is just below the minimum operating voltage of the device. Power
shall rise monotonically from 0.0Vdc to full VCC in less than 1ms. Hold at full VCC for at least 100μs before the first
operation. Power shall drop from full VCC to 0.0Vdc in less than 1ms. Power dropping to a non-zero level and then slowly
going to zero is not recommended. Power shall remain off (0.0Vdc) for 0.5s minimum. Please consult Atmel if your power
conditions do not meet the above recommendations.
Atmel AT24C16C Automotive [DATASHEET]
8799B–SEEPR–8/12
10
9.
Product Marking
8 lead SOIC
8 lead TSSOP
3 Rows of 8 Characters
3 Rows
2 of 6 and 1 of 7 Characters
ATPYWW
16CD @
AAAAAAA
ATMLPYWW
16CD
@
AAAAAAAA
Catalog Truncation: 16C
Catalog Number: AT24C16C
Date Codes
Y = Year
2: 2012
3: 2013
4: 2014
5: 2015
6:
7:
8:
9:
Voltages
2016
2017
2018
2019
M = Month
A: January
B: February
“ ”
“
L: December
WW = Work Week of Assembly
02: Week 2
04: Week 4
”
“ ”
52: Week 52
Trace Code
D: 2.5v min
Grade/Lead Finish Material
XX = Trace Code (ATMEL Lot Numbers to Correspond to Code)
(e.g. XX:
AA, AB...YZ, ZZ)
P: Automotive/NiPdAu
Lot Number
AAAAAAA = ATMEL Wafer Lot Number
ATMEL Truncation
AT: ATMEL
ATM: ATMEL
ATML: ATMEL
Country of Assembly
@ = Country of Assembly
2/3/12
Package Mark Contact:
[email protected]
TITLE
24C16CAM, AT24C16C Automotive Marking Information
for Package Offering
DRAWING NO.
24C16CAM
Atmel AT24C16C Automotive [DATASHEET]
8799B–SEEPR–8/12
REV.
A
11
10.
Ordering Code Details
AT 2 4 C 1 6 C - S S P D - T
Atmel Designator
Shipping Carrier Option
B or blank = Bulk (tubes)
T = Tape and reel
Product Family
Operating Voltage
D = 2.5V to 5.5V
Device Density
16 = 16k
Package Device Grade or
Wafer/Die Thickness
P = Green, NiPdAu lead finish
Automotive Temperature range
(-40°C to +125°C)
Device Revision
Package Option
SS
X
= JEDEC SOIC
= TSSOP
Atmel AT24C16C Automotive [DATASHEET]
8799B–SEEPR–8/12
12
11.
Atmel AT24C16C Ordering Information
Atmel Ordering Code
AT24C16C-SSPD
AT24C16C-SSPD-T(1)
AT24C16C-XPD
AT24C16C-XPD-T(1)
Note:
1.
Package
8S1
8X
Operation Range
NiPdAu
Lead-free/Halogen-free/Automotive Temperature
(40C to 125C)
Tape and reel delivery:

SOIC 4k/reel

TSSOP 5k/reel
Package Type
8S1
8-lead, 0.150" wide, Plastic Gull Wing Small Outline (JEDEC SOIC)
8X
8-lead, 0.170" wide, Thin Shrink Small Outline (TSSOP)
Atmel AT24C16C Automotive [DATASHEET]
8799B–SEEPR–8/12
13
12.
Packaging Information
8S1 — 8-lead JEDEC SOIC
C
1
E
E1
L
N
Ø
TOP VIEW
END VIEW
e
b
COMMON DIMENSIONS
(Unit of Measure = mm)
A
A1
D
SIDE VIEW
Notes: This drawing is for general information only.
Refer to JEDEC Drawing MS-012, Variation AA
for proper dimensions, tolerances, datums, etc.
SYMBOL MIN
A
1.35
NOM
MAX
–
1.75
A1
0.10
–
0.25
b
0.31
–
0.51
C
0.17
–
0.25
D
4.80
–
5.05
E1
3.81
–
3.99
E
5.79
–
6.20
e
NOTE
1.27 BSC
L
0.40
–
1.27
Ø
0°
–
8°
6/22/11
Package Drawing Contact:
[email protected]
TITLE
8S1, 8-lead (0.150” Wide Body), Plastic Gull Wing
Small Outline (JEDEC SOIC)
GPC
SWB
DRAWING NO.
REV.
8S1
G
Atmel AT24C16C Automotive [DATASHEET]
8799B–SEEPR–8/12
14
8X — 8-lead TSSOP
C
1
Pin 1 indicator
this corner
E1
E
L1
N
L
Top View
End View
A
b
A1
e
COMMON DIMENSIONS
(Unit of Measure = mm)
A2
SYMBOL
D
Side View
Notes:
1. This drawing is for general information only.
Refer to JEDEC Drawing MO-153, Variation AA, for proper
dimensions, tolerances, datums, etc.
2. Dimension D does not include mold Flash, protrusions or gate
burrs. Mold Flash, protrusions and gate burrs shall not exceed
0.15mm (0.006in) per side.
3. Dimension E1 does not include inter-lead Flash or protrusions.
Inter-lead Flash and protrusions shall not exceed 0.25mm
(0.010in) per side.
4. Dimension b does not include Dambar protrusion.
Allowable Dambar protrusion shall be 0.08mm total in excess
of the b dimension at maximum material condition. Dambar
cannot be located on the lower radius of the foot. Minimum
space between protrusion and adjacent lead is 0.07mm.
5. Dimension D and E1 to be determined at Datum Plane H.
MIN
MAX
NOM
A
-
-
1.20
A1
0.05
-
0.15
A2
0.80
1.00
1.05
D
2.90
3.00
3.10
E
NOTE
2, 5
6.40 BSC
E1
4.30
4.40
4.50
3, 5
b
0.19
–
0.30
4
e
L
0.65 BSC
0.45
0.60
0.75
L1
1.00 REF
C
0.09
-
0.20
6/22/11
TITLE
Package Drawing Contact:
[email protected]
GPC
8X, 8-lead 4.4mm Body, Plastic Thin
Shrink Small Outline Package (TSSOP)
TNR
DRAWING NO.
8X
Atmel AT24C16C Automotive [DATASHEET]
8799B–SEEPR–8/12
REV.
D
15
13.
Revision History
Doc. Rev.
Date
8799B
08/2012
8799A
03/2012
Comments
Remove preliminary status.
Update Atmel logos and disclaimer/copy page.
Initial document release
Atmel AT24C16C Automotive [DATASHEET]
8799B–SEEPR–8/12
16
Atmel Corporation
1600 Technology Drive
Atmel Asia Limited
Unit 01-5 & 16, 19F
Atmel Munich GmbH
Business Campus
Atmel Japan G.K.
16F Shin-Osaki Kangyo Bldg
San Jose, CA 95110
BEA Tower, Millennium City 5
Parkring 4
1-6-4 Osaki, Shinagawa-ku
USA
418 Kwun Tong Roa
D-85748 Garching b. Munich
Tokyo 141-0032
Tel: (+1) (408) 441-0311
Kwun Tong, Kowloon
GERMANY
JAPAN
Fax: (+1) (408) 487-2600
HONG KONG
Tel: (+49) 89-31970-0
Tel: (+81) (3) 6417-0300
www.atmel.com
Tel: (+852) 2245-6100
Fax: (+49) 89-3194621
Fax: (+81) (3) 6417-0370
Fax: (+852) 2722-1369
© 2012 Atmel Corporation. All rights reserved. / Rev.: 8799B–SEEPR–8/12
Atmel®, Atmel logo and combinations thereof, Enabling Unlimited Possibilities™, and others are registered trademarks or trademarks of Atmel Corporation or its
subsidiaries. Other terms and product names may be trademarks of others.
Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this
document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN THE ATMEL TERMS AND CONDITIONS OF SALES LOCATED ON THE ATMEL WEBSITE, ATMEL ASSUMES
NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS AND PROFITS, BUSINESS INTERRUPTION, OR LOSS OF
INFORMATION) ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no
representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and products descriptions at any time
without notice. Atmel does not make any commitment to update the information contained herein. Unless specifically provided otherwise, Atmel products are not suitable for, and shall not be used in,
automotive applications. Atmel products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life.