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Электронный компонент: M24C04-S

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1/29
October 2003
M24C16, M24C08
M24C04, M24C02, M24C01
16Kbit, 8Kbit, 4Kbit, 2Kbit and 1Kbit Serial IC Bus EEPROM
FEATURES SUMMARY
s
Two Wire I
2
C Serial Interface
Supports 400 kHz Protocol
s
Single Supply Voltage:
4.5V to 5.5V for M24Cxx
2.5V to 5.5V for M24Cxx-W
2.2V to 5.5V for M24Cxx-L
1.8V to 5.5V for M24Cxx-R
s
Write Control Input
s
BYTE and PAGE WRITE (up to 16 Bytes)
s
RANDOM and SEQUENTIAL READ Modes
s
Self-Timed Programming Cycle
s
Automatic Address Incrementing
s
Enhanced ESD/Latch-Up Behavior
s
More than 1 Million Erase/Write Cycles
s
More than 40 Year Data Retention
Figure 1. Packages
PDIP8 (BN)
8
1
SO8 (MN)
150 mil width
8
1
TSSOP8 (DW)
169 mil width
TSSOP8 (DS)
3x3mm body size (MSOP)
M24C16, M24C08, M24C04, M24C02, M24C01
2/29
TABLE OF CONTENTS
SUMMARY DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Logic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Signal Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Power On Reset: VCC Lock-Out Write Protect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
DIP, SO and TSSOP Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SIGNAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Serial Clock (SCL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Serial Data (SDA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Chip Enable (E0, E1, E2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Write Control (WC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Maximum RL Value versus Bus Capacitance (CBUS) for an I2C Bus . . . . . . . . . . . . . . . . . . . . . . . 5
I2C Bus Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Device Select Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
DEVICE OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Start Condition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Stop Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Acknowledge Bit (ACK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Data Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Memory Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Write Mode Sequences with WC=1 (data write inhibited) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Write Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Byte Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Page Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Write Mode Sequences with WC=0 (data write enabled) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Write Cycle Polling Flowchart using ACK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Minimizing System Delays by Polling On ACK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Read Mode Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Read Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Random Address Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Current Address Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Sequential Read. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Acknowledge in Read Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
INITIAL DELIVERY STATE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3/29
M24C16, M24C08, M24C04, M24C02, M24C01
MAXIMUM RATING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
DC and AC PARAMETERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Operating Conditions (M24Cxx-xx6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Operating Conditions (M24Cxx-xx3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Operating Conditions (M24Cxx-Wxx6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Operating Conditions (M24Cxx-Wxx3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Operating Conditions (M24Cxx-Lxx6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Operating Conditions (M24Cxx-Rxx6). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
AC Measurement Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
AC Measurement I/O Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
DC Characteristics (M24Cxx-xx6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
DC Characteristics (M24Cxx-xx3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
DC Characteristics (M24Cxx-Wxx6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
DC Characteristics (M24Cxx-Wxx3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
DC Characteristics (M24Cxx-Lxx6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
DC Characteristics (M24Cxx-Rxx6). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
AC Characteristics (M24Cxx-xx6, M24Cxx-Wxx3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
AC Characteristics (M24Cxx-xx3, M24Cxx-Wxx6, M24Cxx-Lxx6) . . . . . . . . . . . . . . . . . . . . . . . . . 19
AC Characteristics (M24Cxx-Rxx6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
PACKAGE MECHANICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
PDIP8 8 pin Plastic DIP, 0.25mm lead frame, Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . 22
PDIP8 8 pin Plastic DIP, 0.25mm lead frame, Package Mechanical Data . . . . . . . . . . . . . . . . . . 22
SO8 narrow 8 lead Plastic Small Outline, 150 mils body width, Package Outline . . . . . . . . . . . . 23
SO8 narrow 8 lead Plastic Small Outline, 150 mils body width, Package Mechanical Data . . . . 23
TSSOP8 8 lead Thin Shrink Small Outline, Package Outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
TSSOP8 8 lead Thin Shrink Small Outline, Package Mechanical Data . . . . . . . . . . . . . . . . . . . . 24
TSSOP8 3x3mm 8 lead Thin Shrink Small Outline, 3x3mm body size, Package Outline . . . . . 25
TSSOP8 3x3mm 8 lead Thin Shrink Small Outline, 3x3mm body size, Package Mechanical Data
25
PART NUMBERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Ordering Information Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
How to Identify Current and New Products by the Process Identification Letter . . . . . . . . . . . . . . . 27
How to Identify Current and New Products by the Process Identification Letter . . . . . . . . . . . . . 27
Document Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
M24C16, M24C08, M24C04, M24C02, M24C01
4/29
SUMMARY DESCRIPTION
These I
2
C-compatible electrically erasable
programmable memory (EEPROM) devices are
organized as 2048/1024/512/256/128 x 8
(M24C16, M24C08, M24C04, M24C02, M24C01).
Figure 2. Logic Diagram
I
2
C uses a two wire serial interface, comprising a
bi-directional data line and a clock line. The devic-
es carry a built-in 4-bit Device Type Identifier code
(1010) in accordance with the I
2
C bus definition.
The device behaves as a slave in the I
2
C protocol,
with all memory operations synchronized by the
serial clock. Read and Write operations are initiat-
ed by a Start condition, generated by the bus mas-
ter. The Start condition is followed by a Device
Select Code and RW bit (as described in Table 2),
terminated by an acknowledge bit.
When writing data to the memory, the device in-
serts an acknowledge bit during the 9
th
bit time,
following the bus master's 8-bit transmission.
When data is read by the bus master, the bus
master acknowledges the receipt of the data byte
in the same way. Data transfers are terminated by
a Stop condition after an Ack for Write, and after a
NoAck for Read.
Table 1. Signal Names
Power On Reset: V
CC
Lock-Out Write Protect
In order to prevent data corruption and inadvertent
Write operations during Power-up, a Power On
Reset (POR) circuit is included. At Power-up, the
internal reset is held active until V
CC
has reached
the POR threshold value, and all operations are
disabled the device will not respond to any
command. In the same way, when V
CC
drops from
the operating voltage, below the POR threshold
value, all operations are disabled and the device
will not respond to any command.
A stable and valid V
CC
(as defined in Tables 7 and
10) must be applied before applying any logic sig-
nal.
Figure 3. DIP, SO and TSSOP Connections
Note: 1. NC = Not Connected
2. See page 22 (onwards) for package dimensions, and how to identify pin-1.
AI02033
3
E0-E2
SDA
VCC
M24Cxx
WC
SCL
VSS
E0, E1, E2
Chip Enable
SDA
Serial Data
SCL
Serial Clock
WC
Write Control
V
CC
Supply Voltage
V
SS
Ground
SDA
VSS
SCL
WC
VCC
/ E2
AI02034E
M24Cxx
1
2
3
4
8
7
6
5
/ E2
/ E2
/ E2
NC
/ E1
/ E1
/ E1
/ NC
NC
/ E0
/ E0
/ NC
/ NC
NC
/1Kb
/2Kb
/4Kb
/8Kb
16Kb
5/29
M24C16, M24C08, M24C04, M24C02, M24C01
SIGNAL DESCRIPTION
Serial Clock (SCL).
This input signal is used to
strobe all data in and out of the device. In applica-
tions where this signal is used by slave devices to
synchronize the bus to a slower clock, the bus
master must have an open drain output, and a
pull-up resistor can be connected from Serial
Clock (SCL) to V
CC
. (Figure 4 indicates how the
value of the pull-up resistor can be calculated). In
most applications, though, this method of synchro-
nization is not employed, and so the pull-up resis-
tor is not necessary, provided that the bus master
has a push-pull (rather than open drain) output.
Serial Data (SDA). This bi-directional signal is
used to transfer data in or out of the device. It is an
open drain output that may be wire-OR'ed with
other open drain or open collector signals on the
bus. A pull up resistor must be connected from Se-
rial Data (SDA) to V
CC
. (Figure 4 indicates how the
value of the pull-up resistor can be calculated).
Chip Enable (E0, E1, E2). These input signals
are used to set the value that is to be looked for on
the three least significant bits (b3, b2, b1) of the 7-
bit Device Select Code. These inputs must be tied
to V
CC
or V
SS
, to establish the Device Select
Code.
Write Control (WC). This input signal is useful
for protecting the entire contents of the memory
from inadvertent write operations. Write opera-
tions are disabled to the entire memory array when
Write Control (WC) is driven High. When uncon-
nected, the signal is internally read as V
IL
, and
Write operations are allowed.
When Write Control (WC) is driven High, Device
Select and Address bytes are acknowledged,
Data bytes are not acknowledged.
Figure 4. Maximum R
L
Value versus Bus Capacitance (C
BUS
) for an I
2
C Bus
AI01665
VCC
CBUS
SDA
RL
MASTER
RL
SCL
CBUS
100
0
4
8
12
16
20
CBUS (pF)
Maximum RP value (k
)
10
1000
fc = 400kHz
fc = 100kHz