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PDF M95080-A145 Data sheet ( Hoja de datos )

Número de pieza M95080-A145
Descripción Automotive 8-Kbit serial SPI bus EEPROMs
Fabricantes STMicroelectronics 
Logotipo STMicroelectronics Logotipo



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M95080-A125
M95080-A145
Automotive 8-Kbit serial SPI bus EEPROMs
with high-speed clock
Datasheet - production data
SO8 (MN)
150 mil width
TSSOP8 (DW)
169 mil width
WFDFPN8 (MF)
2 x 3 mm
Features
Compatible with the Serial Peripheral Interface
(SPI) bus
Memory array
– 8 Kbit (1 Kbyte) of EEPROM
– Page size: 32 byte
– Write protection by block: 1/4, 1/2 or whole
memory
– Additional Write lockable Page
(Identification page)
Extended temperature and voltage ranges
– Up to 125 °C (VCC from 1.7 V to 5.5 V)
– Up to 145 °C (VCC from 2.5 V to 5.5 V)
High speed clock frequency
– 20 MHz for VCC 4.5 V
– 10 MHz for VCC 2.5 V
– 5 MHz for VCC 1.7 V
Schmitt trigger inputs for noise filtering
Short Write cycle time
– Byte Write within 4 ms
– Page Write within 4 ms
Write cycle endurance
– 4 million Write cycles at 25 °C
– 1.2 million Write cycles at 85 °C
– 600 k Write cycles at 125 °C
– 400 k Write cycles at 145 °C
Data retention
– 50 years at 125 °C
– 100 years at 25 °C
ESD Protection (Human Body Model)
– 4000 V
Packages
– RoHS-compliant and halogen-free
(ECOPACK2®)
February 2016
This is information on a product in full production.
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M95080-A145 pdf
M95080-A125 M95080-A145
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.
Figure 17.
Figure 18.
Figure 19.
Figure 20.
Figure 21.
Figure 22.
Figure 23.
Figure 24.
Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
8-pin package connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
SPI modes supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Hold mode activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Write Enable (WREN) sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Write Disable (WRDI) sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Read Status Register (RDSR) sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Write Status Register (WRSR) sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Read from Memory Array (READ) sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Byte Write (WRITE) sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Page Write (WRITE) sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Read Identification Page sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Write Identification Page sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Read Lock Status sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Lock ID sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Bus master and memory devices on the SPI bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
AC measurement I/O waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Serial input timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Hold timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Serial output timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
SO8N – 8-lead plastic small outline, 150 mils body width, package outline . . . . . . . . . . . . 35
SO8N – 8-lead plastic small outline, 150 mils body width,
package recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
TSSOP8 – 8-lead thin shrink small outline, 3 x 4.4 mm, 0.65 mm pitch,
package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
WFDFPN8 (MLP8) – 8-lead, 2 x 3 mm, 0.5 mm pitch very very thin fine pitch
dual flat package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
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M95080-A145 arduino
M95080-A125 M95080-A145
Operating features
3.3 Hold mode
The Hold (HOLD) signal is used to pause any serial communications with the device without
resetting the clocking sequence.
The Hold mode starts when the Hold (HOLD) signal is driven low and the Serial Clock (C) is
low (as shown in Figure 4). During the Hold mode, the Serial Data output (Q) is high
impedance, and the signals present on Serial Data input (D) and Serial Clock (C) are not
decoded. The Hold mode ends when the Hold (HOLD) signal is driven high and the Serial
Clock (C) is or becomes low.
Figure 4. Hold mode activation
#
(/,$
(OLD
CONDITION
(OLD
#COONNDDIITTIIOONN
-36
Deselecting the device while it is in Hold mode resets the paused communication.
3.4
3.4.1
Protocol control and data protection
Protocol control
The Chip Select (S) input offers a built-in safety feature, as the S input is edge-sensitive as
well as level-sensitive: after power-up, the device is not selected until a falling edge has first
been detected on Chip Select (S). This ensures that Chip Select (S) must have been high
prior to going low, in order to start the first operation.
For Write commands (WRITE, WRSR, WRID, LID) to be accepted and executed:
the Write Enable Latch (WEL) bit must be set by a Write Enable (WREN) instruction
a falling edge and a low state on Chip Select (S) during the whole command must be
decoded
instruction, address and input data must be sent as multiple of eight bits
the command must include at least one data byte
Chip Select (S) must be driven high exactly after a data byte boundary
Write command can be discarded at any time by a rising edge on Chip Select (S) outside of
a byte boundary.
To execute Read commands (READ, RDSR, RDID, RDLS), the device must decode:
a falling edge and a low level on Chip Select (S) during the whole command
instruction and address as multiples of eight bits (byte)
From this step, data bits are shifted out until the rising edge on Chip Select (S).
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