mb85rc64vpnf-g-jnere1

FUJITSU SEMICONDUCTOR
FACT SHEET
NP501-00014-3v0-E
FRAM
MB85RC64V
MB85RC64V is a 64K-bits FRAM LSI with serial interface (I2C), using the ferroelectric
process and CMOS process technologies for forming the nonvolatile memory cells.
Because FRAM is able to write high-speed even though a nonvolatile memory,
it is suitable for the log management and the storage of the resume data, etc.
■ FEATURES
 Bit configuration
 Two-wire serial interface
: 8,192 words × 8 bits
:
Fully controllable by two ports: serial clock (SCL) and serial data (SDA)
:1 MHz (Max)
: 1012 times / byte
: 10 years (+85℃), 95 years (+55℃), over 200 years (+35 ℃)
: 3.0V to 5.5V
: Operating power supply current 90 μA (Typ @1 MHz)
Standby current 5μA (Typ)
 Operation ambient temperature range:-40℃ to +85℃
 Package
:8-pin plastic SOP (FPT-8P-M02)
RoHS compliant





Operating frequency
Read/write endurance
Data retention
Operating power supply voltage
Low power consumption
■ ORDERING INFORMATION
Product name
Package
Remarks
MB85RC64VPNF-G-JNE1
8-pin plastic SOP
(FPT-8P-M02)
3.90mm×5.05mm,1.27mm pitch
Tube
MB85RC64VPNF-G-JNERE1
8-pin plastic SOP
(FPT-8P-M02)
3.90mm×5.05mm,1.27mm pitch
Embossed Carrier tape
■ PACKAGE EXAMPLE OF REFERENCE
8-pin plastic SOP
(FPT-8P-M02)
May 2013
1/2
Copyright©2011-2013 FUJITSU SEMICONDUCTOR LIMITED All rights reserved
MB85RC64V
■ PIN ASSIGNMENT
Pin No.
Pin name
Description
Device Address pins
(TOP VIEW)
A0
1
8
VDD
A1
2
7
WP
1 to 3
A0 to A2
4
VSS
5
SDA
6
SCL
7
WP
8
VDD
The MB85RC64V can be connected to the same data bus up to 8 devices.
Device addresses are used in order to identify each of these devices. Connect
these pins to VDD pin or VSS pin externally. Only if the combination of VDD and
VSS pins matches Device Address Code inputted from the SDA pin, the device
operates. In the open pin state, A0, A1, and A2 pins are internally pulled-down
and recognized as the "L" level.
Ground pin
Serial Data I/O pin
A2
3
6
SCL
VSS
4
5
SDA
(FPT-8P-M02)
This is an I/O pin which performs bidirectional communication for both memory
address and writing/reading data. It is possible to connect multiple devices.
It is an open drain output, so a pull-up resistor is required to be connected
to the external circuit.
Serial Clock pin
This is a clock input pin for input/output timing serial data. Data
is sampled on the rising edge of the clock and output on the falling
edge.
Write Protect pin
When the Write Protect pin is the "H" level, the writing operation
is disabled. When the Write Protect pin is the "L" level, the entire
memory region can be overwritten. The reading operation is always
enabled regardless of the Write Protect pin input level. The Write
Protect pin is internally pulled down to the VSS pin and that is
recognized as the "L" level (write enabled) when the pin is the open
state.
Supply Voltage pin
■ BLOCK DIAGRAM
Control Circuit
SCL
WP
Row Decoder
Serial/Parallel Converter
Address Counter
SDA
FRAM Array
8,192 × 8
Column Decoder/Sense Amp/
Write Amp
A0, A1, A2
■ I2C
The MB85RC64V has the two-wire serial interface; the I2C bus,and operates as a slave device.
The I2C bus defines communication roles of “master” and “slave” devices, with the master side
holding the authority to initiate control. Furthermore, the I2C bus connection is
possible where a single master device is connected to multiple slave devices
in a party-line configuration. In this case, it is necessary to assign a unique
VDD
device address to the slave device, the master side starts communication after
specifying the slave
Pull-up
Resistors
SCL
SDA
I2C Bus
Master
I2C Bus
MB85RC64V
A2
0
A1
0
A0
0
I2C Bus
MB85RC64V
A2
0
A1
0
A0
1
I2C Bus
MB85RC64V
A2
0
A1
1
...
A0
0
Device address
NP501-00014-3v0-E
May 2013
2/2
Copyright©2011-2013 FUJITSU SEMICONDUCTOR LIMITED All rights reserved