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PDF MB85RC64 Data sheet ( Hoja de datos )
| Número de pieza | MB85RC64 | |
| Descripción | 64 K (8 K x 8) Bit I2C | |
| Fabricantes | Fujitsu | |
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FUJITSU SEMICONDUCTOR
DATA SHEET
Memory FRAM
64 K (8 K × 8) Bit I2C
MB85RC64
DS05–13109–3E
■ DESCRIPTION
The MB85RC64 is a FRAM (Ferroelectric Random Access Memory) Stand-Alone chip in a configuration of
8,192 words × 8 bits, using the ferroelectric process and silicon gate CMOS process technologies for forming
the nonvolatile memory cells.
The MB85RC64 adopts the two-wire serial interface.
Unlike SRAM, the MB85RC64 is able to retain data without using a data backup battery.
The read/write endurance of the nonvolatile memory cells used for the MB85RC64 has improved to be at
least 1010 cycles, significantly out performing Flash memory and E2PROM in the number.
The MB85RC64 does not need a polling sequence after writing to the memory such as the case of Flash
memory nor E2PROM.
■ FEATURES
• Bit configuration
: 8,192 words × 8 bits
• Operating power supply voltage : 2.7 V to 3.6 V
• Operating frequency
: 400 kHz (Max)
• Two-wire serial interface
: I2C-bus specification ver. 2.1 compliant, supports Standard-mode/
Fast-mode.
Fully controllable by two ports: serial clock (SCL) and serial data (SDA).
• Operating temperature range : − 40 °C to +85 °C
• Data retention
: 10 years ( + 75 °C)
• Read/write endurance
: 1010 times
• Package
: Plastic / SOP, 8-pin (FPT-8P-M02)
• Low power consumption
: Operating current 0.15 mA (Max: @400 kHz), Standby current 5 μA (Typ)
Copyright©2010-2011 FUJITSU SEMICONDUCTOR LIMITED All rights reserved
2011.6
www.DataSheet4U.net
1 page  
MB85RC64
■ ACKNOWLEDGE (ACK)
In the I2C bus, serial data including address or memory information is sent in units of 8 bits. The acknowledge
signal indicates that every each 8 bits of the data is successfully sent and received. The information receiver
side usually outputs “L” every time on the 9th SCL clock after each 8 bits are successfully transmitted. On
the transmitter side, the bus is temporarily released to Hi-Z every time on this 9th clock to allow the acknowl-
edge signal to be received and checked. During this Hi-Z-released period, the receiver side pulls the SDA
line down to indicate “L” that the previous 8bits communication is successfully received.
If the information receiver side detects Stop condition before driving the acknowledge “L”, the read operation
ends and the I2C bus enters the standby state. If Stop condition is not sent, nor does the transmitter detect
the acknowledge “L”, the bus remains in the released state “H” without doing anything.
• Acknowledge timing overview diagram
SCL
123
89
SDA
Start
The transmitter side should always release SDA on the
9th bit. At this time, the receiver side outputs a pull-down
to indicate a successful byte transfer (ACK response).
ACK
DS05–13109–3E
5
5 Page 
MB85RC64
■ ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Min
Power supply voltage*
VCC − 0.5
Input pin voltage*
Output pin voltage*
Ambient temperature
VIN
VOUT
TA
− 0.5
− 0.5
− 40
Storage temperature
Tstg
− 40
*: These parameters are based on the condition that VSS is 0 V.
Rating
Max
+4.0
VCC + 0.5 ( ≤ 4.0)
VCC + 0.5 ( ≤ 4.0)
+ 85
+ 125
Unit
V
V
V
°C
°C
WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current,
temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings.
■ RECOMMENDED OPERATING CONDITIONS
Parameter
Power supply voltage*
Symbol
VCC
Min
2.7
“H” level input voltage*
VIH VCC × 0.8
“L” level input voltage*
VIL − 0.5
Ambient temperature
TA − 40
*: These parameters are based on the condition that VSS is 0 V.
Value
Typ
3.3
⎯
⎯
⎯
Max
3.6
VCC + 0.5
( ≤ 4.0)
+ 0.6
+ 85
Unit
V
V
V
°C
WARNING: The recommended operating conditions are required in order to ensure the normal operation of
the semiconductor device. All of the device's electrical characteristics are warranted when the
device is operated within these ranges.
Always use semiconductor devices within their recommended operating condition ranges.
Operation outside these ranges may adversely affect reliability and could result in device failure.
No warranty is made with respect to uses, operating conditions, or combinations not represented
on the data sheet. Users considering application outside the listed conditions are advised to contact
their representatives beforehand.
DS05–13109–3E
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet MB85RC64.PDF ] | |
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