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PDF M24C08 Data sheet ( Hoja de datos )

Número de pieza M24C08
Descripción 16/8/4/2/1 Kbit Serial IC Bus EEPROM
Fabricantes STMicroelectronics 
Logotipo STMicroelectronics Logotipo



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No Preview Available ! M24C08 Hoja de datos, Descripción, Manual

M24C16, M24C08
M24C04, M24C02, M24C01
16Kbit, 8Kbit, 4Kbit, 2Kbit and 1Kbit Serial I²C bus EEPROM
Feature summary
Two-wire I²C serial interface
Supports 400kHz protocol
Single supply voltage:
– 2.5 to 5.5V for M24Cxx-W
– 1.8 to 5.5V for M24Cxx-R
Write Control input
Byte and Page Write (up to 16 Bytes)
Random and Sequential Read modes
Self-timed programming cycle
Automatic address incrementing
Enhanced ESD/latch-up protection
More than 1 million Write cycles
More than 40-year data retention
Packages
– ECOPACK® (RoHS compliant)
Table 1. Product list
Reference
M24C16
M24C08
M24C04
M24C02
M24C01
Part Number
M24C16-W
M24C16-R
M24C08-W
M24C08-R
M24C04-W
M24C04-R
M24C02-W
M24C02-R
M24C01-W
M24C01-R
PDIP8 (BN)
SO8 (MN)
150 mil width
TSSOP8 (DW)
169 mil width
TSSOP8 (DS)
3x3mm² body size
UFDFPN8 (MB)
2x3mm² (MLP)
September 2006
Rev 8
1/33
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1

1 page




M24C08 pdf
M24C16, M24C08, M24C04, M24C02, M24C01
List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
8-pin package connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Device select code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Maximum RP value versus bus parasitic capacitance (C) for an I²C bus . . . . . . . . . . . . . . 9
I²C bus protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Write mode sequences with WC = 1 (data write inhibited) . . . . . . . . . . . . . . . . . . . . . . . . . 13
Write mode sequences with WC = 0 (data write enabled) . . . . . . . . . . . . . . . . . . . . . . . . . 14
Write cycle polling flowchart using ACK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Read mode sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
AC measurement I/O waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
PDIP8 – 8 pin Plastic DIP, 0.25mm lead frame, package outline . . . . . . . . . . . . . . . . . . . . 25
SO8 narrow – 8 lead Plastic Small Outline, 150 mils body width, package outline . . . . . . 26
UFDFPN8 (MLP8) 8-lead Ultra thin Fine pitch Dual Flat Package No lead
2x3mm², outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
TSSOP8 – 8 lead Thin Shrink Small Outline, package outline . . . . . . . . . . . . . . . . . . . . . . 28
TSSOP8 3x3mm² – 8 lead Thin Shrink Small Outline, 3x3mm² body size,
package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
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M24C08 arduino
M24C16, M24C08, M24C04, M24C02, M24C01
3 Device operation
Device operation
The device supports the I²C protocol. This is summarized in Figure 5. Any device that sends
data on to the bus is defined to be a transmitter, and any device that reads the data to be a
receiver. The device that controls the data transfer is known as the bus master, and the
other as the slave device. A data transfer can only be initiated by the bus master, which will
also provide the serial clock for synchronization. The M24Cxx device is always a slave in all
communication.
3.1 Start condition
Start is identified by a falling edge of Serial Data (SDA) while Serial Clock (SCL) is stable in
the High state. A Start condition must precede any data transfer command. The device
continuously monitors (except during a Write cycle) Serial Data (SDA) and Serial Clock
(SCL) for a Start condition, and will not respond unless one is given.
3.2 Stop condition
Stop is identified by a rising edge of Serial Data (SDA) while Serial Clock (SCL) is stable
and driven High. A Stop condition terminates communication between the device and the
bus master. A Read command that is followed by NoAck can be followed by a Stop condition
to force the device into the Stand-by mode. A Stop condition at the end of a Write command
triggers the internal Write cycle.
3.3 Acknowledge Bit (ACK)
The acknowledge bit is used to indicate a successful byte transfer. The bus transmitter,
whether it be bus master or slave device, releases Serial Data (SDA) after sending eight bits
of data. During the 9th clock pulse period, the receiver pulls Serial Data (SDA) Low to
acknowledge the receipt of the eight data bits.
3.4 Data input
During data input, the device samples Serial Data (SDA) on the rising edge of Serial Clock
(SCL). For correct device operation, Serial Data (SDA) must be stable during the rising edge
of Serial Clock (SCL), and the Serial Data (SDA) signal must change only when Serial Clock
(SCL) is driven Low.
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