Anachip AM24LC16INA 2-wire serial 16k-bits (2048 x 8) cmos electrically erasable prom Datasheet

ATC
AM24LC16
2-Wire Serial 16K-bits (2048 x 8) CMOS Electrically Erasable PROM
General Description
Features
• State- of- the- Art Architecture
- Non-volatile data storage
- Full range Vcc = 2.7V to 5.5V
• 2 wire I2C serial interface
- Provides bi-directional data transfer protocol
• Hard-ware Write Protection
- With WP PIN to disable programming command
• 16 bytes page write mode
- Minimizes total write time per word
• Self-timed write-cycle(including auto-erase)
• Durable and Reliable
- 40 years data retention
- Minimum of 1M write/erase cycles per word
- Unlimited read cycles
- ESD protection
• Low standby current
• Package: PDIP-8L, SOP-8L
The AM24LC16 is a non-volatile, 16384-bit serial
EEPROM with enhanced security device and
conforms to all specifications in I2C 2 wire protocol.
The whole memory can be disabled (Write Protected)
by connecting the WP pin to Vcc. This section of
memory then becomes unalterable unless WP is
switched to Vss. The AM24LC16's communication
protocol uses CLOCK (SCL) and DATA I/O (SDA)
lines to synchronously clock data between the
master (for example: a microcomputer)and the slave
EEPROM devices (s).
Anachip EEPROMs are designed and tested for
application requiring high endurance, high reliability,
and low power consumption.
Pin Assignments
Connection Diagram
NC
1
8
VCC
NC
2
7
WP
NC
3
6
SCL
VSS
4
5
SDA
Name
NC
VSS
SDA
SCL
WP
VCC
Description
No connect
Ground
Data I/O
Clock input
Write protect
Power pin
PDIP / SOP
Ordering Information
AM 24 LC 16 X X X
Operating Voltage
Type
LC: 2.7~5.5V, CMOS
16 =16K
Temp. grade
o
o
Blank : 0 C ~ +70 C
I : − 40 o C ~ +85 o C
V : − 40 o C ~ +125 o C
Package
Packing
S : SOP-8L
N: PDIP-8L
Blank : Tube
A: Taping
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev.A1 Oct
1/10
20, 2003
ATC
2-Wire Serial 16K-bits (2048 x 8) CMOS Electrically Erasable PROM
AM24LC16
Block Diagrams
WP
SCL
start cycle
CONTROL
LOGIC
START
STOP
LOGIC
SDA
ck
load
SLAVE
ADDRESS
REGISTER
&
COMPARATOR
H.V.
GENERATION
TIMING
&
CONTROL
inc
WORD
ADDRESS
COUNTER
EEPROM
ARRAY
128x16x8
XDEC
YDEC
R/W ~ , device address bit A0
VCC
VSS
DATA
REGISTER
Din
DOUT
ACK
Dout
Absolute Maximum Ratings
Characteristics
Storage Temperature
Voltage with Respect to Ground
Symbol
TS
Values
-65 to + 125
-0.3 to + 6.5
Unit
°C
V
NOTE: These are STRESS rating only. Appropriate conditions for operating these devices given elsewhere may permanently damage
the part. Prolonged exposure to maximum ratings may affect device reliability.
Operating Conditions
Temperature under bias
AM24LC16
AM24LC16I
AM24LC16V
Values
0 to + 70
-40 to + 85
-40 to +125
Anachip Corp.
www.anachip.com.tw
Unit
°C
°C
°C
Rev. A1 Oct
2/10
20, 2003
ATC
2-Wire Serial 16K-bits (2048 x 8) CMOS Electrically Erasable PROM
AM24LC16
Electrical Characteristics
DC Electrical Characteristics (Vcc =2.7~5.5V, Ta = 25oC )
Parameter
Symbol
Operating Current (Program) **
Operating Current (Read) **
Standby Current
Standby Current
Input Leakage
Output Leakage
Input Low Voltage**
Input High Voltage**
Output Low Voltage
Output Low Voltage
ICC1
ICC2
ISB1
ISB2
IIL
IOL
VIL
VIH
VOL1
VOL2
VCC Lockout Voltage
VLK
AM24LC16
Units
Min
Max
SCL = 100KHZ CMOS Input Levels
—
3
mA
SCL = 100KHZ CMOS Input Levels
—
200
µA
SCL=SDA=0V, Vcc=5V
—
10
µA
SCL=SDA=0V, Vcc=3V
—
1
µA
VIN = 0 V to VCC
-1
+1
µA
VOUT = 0 V to Vcc
-1
+1
µA
-0.1
Vcc x 0.3
V
Vcc x 0.7 VCC+ 0.2
V
IOL = 2.1mA TTL
—
0.4
V
IOL = 10uA CMOS
—
0.2
V
Programming Command Can Be
Default
—
V
Executed
Conditions
Note ** : ICC1, ICC2, VIL min and VIH max are for reference only and are not tested.
Switching Characteristics (Under Operating Conditions)
AC Electrical Characteristics (Vcc =2.7~5.5V)
Parameter
Symbol
Clock frequency
Clock high time
Clock low time
SDA and SCL rise time**
SDA and SCL fall time**
START condition hold time
START condition setup time
Data input hold time
Data input setup time
STOP condition setup time
Output valid from clock
Bus free time **
Data out hold time
Write cycle time
5V, 25ºC, Byte Mode
Fscl
Thigh
Tlow
Tr
Tf
Thd:Sta
Tsu:Sta
Thd:Dat
Tsu:Dat
Tsu:Sto
Taa
Tbuf
Tdh
Twr
Endurance**
AM24LC16
Min
0
4000
4700
—
—
4000
4700
0
250
4000
300
4700
300
—
1M
Max
100
—
—
1000
300
—
—
—
—
—
3500
—
—
10
—
Units
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
write cycles
Note **: This parameter is characterized and is not 100% tested.
Capacitance TA= 25°C , f=250KHz
Parameter
Output capacitance
Input capacitance
AC. Conditions of Test
Input Pulse Levels
Input Rise and Fall times
Input and Output Timming level
Output Load
Symbol
COUT
CIN
Max
5
5
Units
pF
pF
Vcc x 0.1 to Vcc x 0.9
10 ns
Vcc x 0.5
1 TTL Gate and
Anachip Corp.
www.anachip.com.tw
CL = 100pf
Rev. A1 Oct
3/10
20, 2003
ATC
2-Wire Serial 16K-bits (2048 x 8) CMOS Electrically Erasable PROM
AM24LC16
Pin Descriptions
Table A
Device
A0
A1
A2
AM24LC02
ADR
ADR
ADR
AM24LC04
XP
ADR
ADR
AM24LC08
XP
XP
ADR
AM24LC16
XP
XP
XP
ADR indicates the device address pin.
XP indicates that device address pin don’t care but
refers to an internal PAGE BLOCK memory
segment.
Serial Clock (SCL)
The SCL input is used to clock all data into and out
of the device.
Serial Data (SDA)
SDA is a bidirection pin used to transfer data or
security bit into and out of the device.
It is an open drain output and may be wire-ORed
with any number of open drain or open collector
outputs. Thus, the SDA bus requires a pull-up
resistor to Vcc (typical 4.7KΩ for 100KHz, 1 KΩ
for 400KHz).
Write Protection (WP)
If WP is connected to Vcc, PROGRAM operation
onto the whole memory will not be executed. READ
operations are possible. If WP is connected to Vss,
normal memory operation is enabled, READ/WRITE
over the entire memory is possible.
Device Address Inputs (A0, A1, A2)
The following table (Table A) shows the active pins
across the AM24LCXX device family.
Functional Description
are reserved for indicating start and stop conditions.
(Shown in Figures 1 and 2)
Applications
ATC’s electrically erasable programmable read only
memories (EEPROMs) offer valuable security
features including write protect function , two write
modes ,three read modes, and a wide variety of
2
memory size. Typical applications for the I C bus
and AM24LCXX memories are included in
SANs(small-area-networks), stereos, televisions,
automobiles and other scaled-down systems that
don't require tremendous speeds but instead cost
efficiency and design simplicity.
Start Condition
A HIGH to LOW transition of the SDA line while the
clock (SCL) is HIGH determines a START condition.
All commands must be preceded by a START
condition. (Shown in Figure 2)
Stop Condition
A LOW to HIGH transition of the SDA line while the
clock (SCL) is HIGH determines a STOP condition.
All operations must be ended with a STOP condition.
(Shown in Figure 2)
Endurance and Data Retention
The AM24LC16 is designed for applications
requiring up to 1KK programming cycles (BYTE
WRITE and PAGE WRITE). It provides 40 years of
secure data retention without power.
Acknowledge
Each receiving device, when addressed, is obliged
to generate an acknowledge after the reception of
each byte. The master device must generate an
extra clock pulse which is associated with this
acknowledge bit. The device that acknowledges,
has to pull down the SDA line during the
acknowledge clock pulse in such a way that the
SDA line is stable LOW during the HIGH period of
the acknowledge related clock pulse. Of course,
setup and hold times must be taken into account. A
master must signal an end of data to the slave by
not generating an acknowledge bit on the last byte
that has been clocked out of the slave. In this case,
the slave must leave the data line HIGH to enable
the master to generate the STOP condition. (Shown
in Figure 3)
Device Operation
The AM24LC16 supports a bidirectional bus
oriented protocol. The protocol defines any device
that sends data onto the bus as a transmitter and
the receiving device as the receiver. The device
controlling the transfer is the master and the device
that is controlled is the slave. The master will always
initiate data transfers and provide the clock for both
transmit and receive operations. Therefore, the
AM24LC16 is considered a slave in all applications.
Clock and Data Conventions
Data states on the SDA line can change only during
SCL LOW. SDA state changes during SCL HIGH
Anachip Corp.
www.anachip.com.tw
Rev. A1 Oct
4/10
20, 2003
ATC
2-Wire Serial 16K-bits (2048 x 8) CMOS Electrically Erasable PROM
AM24LC16
Functional Description (Continued)
The AM24LC16 monitors the bus for its
corresponding slave address all the time. It
generates an acknowledge bit if the slave address
was true and it is not in a programming mode.
Devices Addressing
After generating a START condition, the bus master
transmits the slave address consisting of a 4-bit
device code (1010) for the AM24LC16, 3-bit page
address (A2 A1 A0) and 1-bit value indicating the
read or write mode. All I2C EEPROMs use and
internal protocol that defines a PAGE BLOCK size of
16K bits. The eighth bit of slave address determines
if the master device wants to read or write to the
AM24LC16. (Refer to table B).
Table B
Operation
Control Code
Read
1010
Write
1010
A0, A1, A2 is no connect
Chip
Select
A2 A1 A0
A2 A1 A0
R/W
1
0
Write Operations
Byte Write
Following the start signal from the master, the slave
address is placed onto the bus by the master
transmitter. This indicates to the addressed slave
receiver that a byte with a word address will follow
after it has generated an acknowledge bit during the
ninth clock cycle.
Acknowledge Polling
Since the device will not acknowledge during a write
cycle, this can be used to determine when the cycle
is complete (this feature can be used to maximize
bus throughout). Once the stop condition for a write
command has been issued from the master, the
device initiates the internally timed write cycle. ACK
polling can be initiated immediately. This involves
the master sending a start condition followed by the
control byte for a write command (R/W = 0). If the
device is still busy with the write cycle, then no ACK
will returned. If the cycle is complete then the device
will return the ACK and the master can then proceed
with the next read or write commands.
Therefore the next byte transmitted by the master is
the word address and will be written into the address
pointer of the AM24LC16. After receiving another
acknowledge signal from the AM24LC16 the master
device will transmit the data word to be written into
the addressed memory location. The AM24LC16
acknowledges again and the master generates a
stop condition. This initiates the internal write cycle,
and during this period the AM24LC16 will not
generate acknowledge signals. (Shown in Figure 4)
Page Write
The write control byte, word address and the first
data byte are transmitted to the AM24LC16 in the
same way as in a byte write. But instead of
generating a stop condition the master transmit up
to 16 data bytes to the AM24LC16 which are
temporarily stored in the on-chip page buffer and will
be written into the memory after the master has
transmitted a stop condition. If the master transmits
more than 16 bytes prior to generating the stop
condition, the address counter will roll over and the
previously received data will be overwritten. As with
the byte write operation, once the stop condition is
received an internal write cycle will begin. (Shown in
Figure 5).
Write Protection
Programming will not take place if the WP pin of the
AM24LC16 is connected to Vcc. The AM24LC16 will
accept slave and byte addresses; but if the memory
accessed is write protected by the WP pin, the
AM24LC16 will not generate an acknowledge after
the first byte of data has been received, and thus the
programming cycle will not be started when the stop
condition is asserted.
Read Operations
Read operations are initiated in the same way as
write operations with the exception that the R/W bit
of the slave address is set to one. There are three
basic types of read operations: current address read,
random read, and sequential read.
Anachip Corp.
www.anachip.com.tw
Rev. A1 Oct
2/10
20, 2003
ATC
2-Wire Serial 16K-bits (2048 x 8) CMOS Electrically Erasable PROM
AM24LC16
Write Operations (Continued)
Then the master issues the control byte again but
with R/W bit set to a one. The AM24LC16 will then
issue an acknowledge and transmit the eight bit data
word. The master will not acknowledge the transfer
but does generate a stop condition and the
AM24LC16 discontinues transmission. (Shown in
Figure 7)
Current Address Read
The AM24LC16 contains an address counter that
maintains the address of the last accessed word,
internally incremented by one. Therefore if the
previous access (either a read or write operation )
was to address n, the next current address read
operation would access data from address n + 1.
Upon receipt of the slave address with R/W bit set to
one, the AM24LC16 issues an acknowledge and
transmits the eight bit data word . The master will
not acknowledge the transfer but does generate a
stop condition and the AM24LC16 discontinues
transmission. (Shown in Figure 6)
Sequential Read
Sequential read is initiated in the same way as a
random read except that after the AM24LC16
transmits the first data byte, the master issues an
acknowledge as opposed to a stop condition in a
random read. This directs the AM24LC16 to transmit
the next sequentially addressed 8 bit byte (Shown in
Figure 8). To provide sequential read the
AM24LC16 contains an internal address pointer
which is incremented by one at the completion of
each operation.
Random Read
Random read operations allow the master to access
any memory location in a random manner. To
perform this type of read operation, first the word
address must be set. This is done by sending the
word address to the AM24LC16 as part of a write
operation. After the word address is sent, the master
generates a start condition following the
acknowledge. This terminates the write operation,
but not before the internal address pointer is set.
Noise Protection
The SCL and SDA inputs have filter circuits which
suppress noise spikes to assure proper device
operation even on a noisy bus.
Anachip Corp.
www.anachip.com.tw
Rev. A1 Oct
6/10
20, 2003
ATC
2-Wire Serial 16K-bits (2048 x 8) CMOS Electrically Erasable PROM
AM24LC16
Timing Diagram
Bus Timing
Thigh
Tf
Tr
Tlow
Tlow
SCL
Thd:Sta
SDA
IN
Tsu:Sta
Tsu:Dat
Thd:Dat
Tsu:Sta
Tbuf
Taa
Tdh
SDA
OUT
SDA
SCL
DATA STABLE
DATA
CHANGE
Figure 1. Data Validity
SDA
SCL
START
BIT
STOP
BIT
Figure 2. Definition of Start and Stop
Anachip Corp.
www.anachip.com.tw
Rev. A1 Oct
7/10
20, 2003
ATC
AM24LC16
2-Wire Serial 16K-bits (2048 x 8) CMOS Electrically Erasable PROM
SCL FROM MASTER
1
8
9
DATA OUTPUT FROM
TRANSMITTER
DATA OUTPUT FROM
RECEIVER
ACKNOWLEDGE
START
Figure 3. Acknowledge Response from Receiver
BUS ACTIVITY
MASTER
SLAVE
ADDRESS
START
SDA
LINE
BYTE
ADDRESS
DATA n
STOP
S
P
A
C
K
BUS ACTIVITY
SLAVE
A
C
K
A
C
K
Figure 4. Byte Write for Data
BUS ACTIVITY START
MASTER
SDA
LINE
SLAVE
ADDRESS
BYTE
ADDRESS n
DATA n
DATA n+15
STOP
S
P
A
C
K
A
C
K
BUS ACTIVITY
SLAVE
A
C
K
A
C
K
Figure 5. Page Write for Data
START
BUS ACTIVITY
MASTER
SDA
LINE
SLAVE
ADDRESS
STOP
s
P
NO
A
C
K
BUS ACTIVITY
SLAVE
A
C
K
DATA
Figure 6. Current Address Read for Data
BUS ACTIVITY
START
MASTER
SDA
LINE
SLAVE
ADDRESS
BYTE
ADDRESS n
START
S
SLAVE
ADDRESS
STOP
S
A
C
K
BUS ACTIVITY
SLAVE
P
A
C
K
A
C
K
NO
DATA n
A
C
K
Figure 7. Random Read for Data
BUS ACTIVITY
MASTER
SDA
LINE
BUS ACTIVITY
SLAVE
START
SLAVE
ADDRESS
A
C
K
A
C
K
STOP
S
P
A
C
K
NO
DATA n+1
DATA n
Figure 8. Sequential Read for Data
Anachip Corp.
www.anachip.com.tw
DATA n+x
A
C
K
Rev. A1 Oct
8/10
20, 2003
ATC
2-Wire Serial 16K-bits (2048 x 8) CMOS Electrically Erasable PROM
AM24LC16
Package Diagrams
(1)Plastic Dual-in-line package: PDIP-8L
D
E1
E-PIN O0.118 inch
E
15 (4X)
PIN #1 INDENT O0.025 DEEP 0.006-0.008 inch
C
7 (4X)
A1
L
A
A2
eB
B
S
Symbol
A
A1
A2
B
B1
B2
C
D
E
E1
e
L
eB
S
e
B1
B2
Dimensions in millimeters
Min.
Nom.
Max.
5.33
0.38
3.1
3.30
3.5
0.36
0.46
0.56
1.4
1.52
1.65
0.81
0.99
1.14
0.20
0.25
0.36
9.02
9.27
9.53
7.62
7.94
8.26
6.15
6.35
6.55
2.54
2.92
3.3
3.81
8.38
8.89
9.40
0.71
0.84
0.97
Anachip Corp.
www.anachip.com.tw
Dimensions in inches
Min.
Nom.
Max.
0.210
0.015
0.122
0.130
0.138
0.014
0.018
0.022
0.055
0.060
0.065
0.032
0.039
0.045
0.008
0.010
0.014
0.355
0.365
0.375
0.300
0.313
0.325
0.242
0.250
0.258
0.100
0.115
0.130
0.150
0.330
0.350
0.370
0.028
0.033
0.038
Rev. A1 Oct
9/10
20, 2003
ATC
AM24LC16
2-Wire Serial 16K-bits (2048 x 8) CMOS Electrically Erasable PROM
H
E
(2) JEDEC Small Outline Package: SOP-8L
L
VIEW "A"
D
0.015x45
C
A1
B
e
7 (4X)
A
A2
7 (4X)
VIEW "A"
y
Dimensions In Millimeters
Min.
Nom.
Max.
1.40
1.60
1.75
0.10
0.25
1.30
1.45
1.50
0.33
0.41
0.51
0.19
0.20
0.25
4.80
5.05
5.30
3.70
3.90
4.10
1.27
5.79
5.99
6.20
0.38
0.71
1.27
0.10
8O
0O
Symbol
A
A1
A2
B
C
D
E
e
H
L
y
θ
Dimensions In Inches
Min.
Nom.
Max.
0.055
0.063
0.069
0.040
0.100
0.051
0.057
0.059
0.013
0.016
0.020
0.0075
0.008
0.010
0.189
0.199
0.209
0.146
0.154
0.161
0.050
0.228
0.236
0.244
0.015
0.028
0.050
0.004
0O
8O
Marking Information
Top view
Part Number & grade
X = Blank ( 0 ~ + 70 o C )
=
I
( - 40 ~ + 85 o C )
=
V
( - 40 ~ + 125 o C )
ATC
24LC16 X
XX XX X
Logo
ID code: internal
Nth week: 01~52
Year: "01" = 2001
"02" = 2002
PDIP/SOP
Anachip Corp.
www.anachip.com.tw
Rev. A1 Oct
10/10
20, 2003
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