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PDF M24C08-125 Data sheet ( Hoja de datos )

Número de pieza M24C08-125
Descripción serial I2C bus EEPROM
Fabricantes STMicroelectronics 
Logotipo STMicroelectronics Logotipo



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No Preview Available ! M24C08-125 Hoja de datos, Descripción, Manual

M24C16-125 M24C08-125
M24C04-125 M24C02-125
Automotive 16-Kbit, 8-Kbit, 4-Kbit and 2-Kbit
serial I²C bus EEPROM
Datasheet production data
Features
Compatible with I²C bus modes:
– 400 kHz Fast mode
)– 100 kHz Standard mode
t(sMemory array:
c– 2 Kb, 4 Kb, 8 Kb, 16 Kb of EEPROM
u– Page size: 16 bytes
rodWrite
P– Byte Write within 5 ms
te– Page Write within 5 ms
leSingle supply voltage:
o– 2.5 V to 5.5 V
bsOperating temperature range: -40°C up to
+125°C
- ORandom and sequential Read modes
t(s)Automatic address incrementing
Write protect of the whole memory array
ucEnhanced ESD/Latch-Up protection
rodMore than 1 million Write cycles
PMore than 40-year data retention
tePackages
le– RoHS-compliant and halogen-free
Obso(ECOPACK2®)
SO8 (MN)
150 mils width
TSSOP8 (DW)
169 mils width
March 2012
This is information on a product in full production.
Doc ID 022564 Rev 1
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www.st.com
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M24C08-125 pdf
M24C16-125 M24C08-125 M24C04-125 M24C02-125
List of figures
List of figures
Figure 1. Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 2. 8-pin package connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3.
Figure 4.
Figure 5.
Device select code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
I2C Fast mode (fC = 400 kHz): maximum Rbus value versus bus parasitic
capacitance (Cbus) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
I²C bus protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 6. Write mode sequences with WC = 1 (data write inhibited) . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 7. Write mode sequences with WC = 0 (data write enabled) . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 8.
)Figure 9.
t(sFigure 10.
Figure 11.
ucFigure 12.
Obsolete Product(s) - Obsolete ProdFigure 13.
Write cycle polling flowchart using ACK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Read mode sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
AC measurement I/O waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
SO8 narrow – 8 lead plastic small outline, 150 mils body width, package outline . . . . . . . 26
TSSOP8 – 8 lead thin shrink small outline, package outline . . . . . . . . . . . . . . . . . . . . . . . 27
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M24C08-125 arduino
M24C16-125 M24C08-125 M24C04-125 M24C02-125
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 device is always a slave in all
communication.
3.1 Start condition
t(s)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
ccontinuously monitors (except during a Write cycle) Serial Data (SDA) and Serial Clock
u(SCL) for a Start condition.
Prod3.2 Stop condition
leteStop is identified by a rising edge of Serial Data (SDA) while Serial Clock (SCL) is stable
oand driven High. A Stop condition terminates communication between the device and the
sbus master. A Read command that is followed by NoAck can be followed by a Stop condition
bto force the device into the Standby mode. A Stop condition at the end of a Write command
Otriggers the internal Write cycle.
t(s) -3.3 Acknowledge bit (ACK)
ucThe acknowledge bit is used to indicate a successful byte transfer. The bus transmitter,
dwhether it be bus master or slave device, releases Serial Data (SDA) after sending eight bits
roof data. During the 9th clock pulse period, the receiver pulls Serial Data (SDA) Low to
Packnowledge the receipt of the eight data bits.
olete3.4 Data input
bs During data input, the device samples Serial Data (SDA) on the rising edge of Serial Clock
O (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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