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PDF MR45V064B Data sheet ( Hoja de datos )
| Número de pieza | MR45V064B | |
| Descripción | FeRAM | |
| Fabricantes | LAPIS | |
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MR45V064B
64k(8,192-Word × 8-Bit) FeRAM (Ferroelectric Random Access Memory) SPI
FEDR45V064B-01
Issue Date: Jan 08, 2016
GENERAL DESCRIPTION
The MR45V064B is a nonvolatile 8,192-word x 8-bit ferroelectric random access memory (FeRAM) developed
in the ferroelectric process and silicon-gate CMOS technology. The MR45V064B is accessed using Serial
Peripheral Interface.Unlike SRAMs, this device, whose cells are nonvolatile, eliminates battery backup required
to hold data. This device has no mechanisms of erasing and programming memory cells and blocks, such as
those used for various EEPROMs. Therefore, the write cycle time can be equal to the read cycle time and the
power consumption during a write can be reduced significantly.
The MR45V064B can be used in various applications, because the device is guaranteed for the write/read
tolerance of 1012 cycles per bit and the rewrite count can be extended significantly.
FEATURES
• 8,192-word × 8-bit configuration (Serial Peripheral Interface : SPI)
• A single 1.8V to 3.6V （3.3 V typ） power supply
• Operating frequency:
• Read/write tolerance
40MHz
1012 cycles/bit
• Data retention
10 years
• Guaranteed operating temperature range
−40 to 85°C (Extended temperature version)
• Package options:
8-pin plastic SOP (P-SOP8-200-1.27-T2K)
1/20
1 page  
FEDR45V064B-01
MR45V064B
COMMANDS
WREN (Write Enable)
It is necessary to set Write Enable Latch WEL bit before write-operation (WRITE and WRSR).
WREN command sets WEL bit.
CS#
WP# Fixed “H”
01234567
SCK
SI
SO
High-Z
WRDI (Write Disable)
WRDI command resets WEL bit.
CS#
WP# Fixed “H”
01234567
SCK
SI
SO
High-Z
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5 Page 
FEDR45V064B-01
MR45V064B
ELECTRICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
The application of stress (voltage, current, or temperature) that exceeds the absolute maximum rating may
damage the device. Therefore, do not allow actual characteristics to exceed any one parameter ratings
PIN VOLTAGES
Parameter
Pin Voltage (Input Signal)
Pin Voltage (Input/Output Voltage)
Power Supply Voltage
Symbol
VIN
VINQ, VOUTQ
VCC
Min.
–0.5
–0.5
–0.5
Rating
Max.
VCC + 0.5
VCC + 0.5
4.0
Unit
V
V
V
TEMPERATURE RANGE
Parameter
Rating
Symbol
Unit Note
Min. Max.
Storage Temperature
(Extended Temperature Version)
Tstg
–55
125 °C
Operating Temperature
(Extended Temperature Version)
Topr
–40
85 °C
OTHERS
Parameter
Power Dissipation
Symbol
PD
Rating
1,000mW
Note
Ta=25°C
11/20
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet MR45V064B.PDF ] | |
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