|
|
PDF M34C02-R Data sheet ( Hoja de datos )
| Número de pieza | M34C02-R | |
| Descripción | (M34C02-x) EEPROM | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de M34C02-R (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
M34C02-W
M34C02-L M34C02-R
2 Kbit Serial I²C Bus EEPROM
for DIMM serial presence detect
Feature summary
■ Software Data Protection for lower 128 Bytes
■ Two Wire I2C Serial Interface
■ 400kHz Transfer Rates
■ Single Supply Voltage:
– 2.5 to 5.5V for M34C02-W
– 2.2 to 5.5V for M34C02-L
– 1.8 to 5.5V for M34C02-R
■ 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)
TSSOP8 (DW)
169 mil width
UFDFPN8 (MB)
2x3mm² (MLP)
April 2006
Rev 9
1/31
www.st.com
1
1 page  
M34C02-W, M34C02-L, M34C02-R
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.
Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
TSSOP and MLP connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Chip Enable input connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Maximum RP value versus bus parasitic capacitance (C) for an I²C Bus . . . . . . . . . . . . . . 9
I2C bus protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Setting the Write Protection Register (WC = 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Result of setting the write protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Write mode sequences in a non write-protected area . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Write cycle polling flowchart using ACK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Read mode sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Serial presence detect block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
AC Measurement I/O Waveform. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
UFDFPN8 (MLP8) 8-lead Ultra thin Fine pitch Dual Flat Package No lead
2x3mm², Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
TSSOP8 – 8 lead Thin Shrink Small Outline, package outline . . . . . . . . . . . . . . . . . . . . . . 28
5/31
5 Page 
M34C02-W, M34C02-L, M34C02-R
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 memory 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 EEPROM 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.
11/31
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet M34C02-R.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| M34C02-L | (M34C02-x) EEPROM | ST Microelectronics |
| M34C02-R | (M34C02-x) EEPROM | ST Microelectronics |
| M34C02-W | (M34C02-x) EEPROM | ST Microelectronics |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |