Figure 1. 8-pin SOIC pinout Fi…

FM25CL64B

Memory8-pin SOIC

IC FRAM 64KBIT SPI 3V

FM25CL64B is a 64-Kbit serial F-RAM memory with SPI interface, operating voltage 2.7V to 3.65V, max clock frequency 20MHz, available in 8-pin SOIC and DFN packages, industrial temperature range -40°C to +85°C, featuring high endurance and no-delay writes.Checked against the datasheet

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Technical parameters

Key specs

InterfaceSerial

Supply voltage2.7 ~ 3.65 V

Clock frequency20 MHzMax

Datasheet-verified parameters

21 items

Parameter	Value and test conditions	Source
Memory Type	Ferroelectric random access memory (F-RAM)
Capacity	64-Kbit (8K × 8)
Interface	Serial Peripheral Interface (SPI)
Supply Voltage	Min: 2.7 V, Typ: 3.3 V, Max: 3.65 V
Clock Frequency	Max: 20 MHz
Package	8-pin SOIC, 8-pin DFN
Operating Temperature	-40 °C to +85 °C
Grade	Industrial
RoHS	Compliant
Supply Current	Max: 0.2 mA @ fSCK=1 MHz; Max: 3 mA @ fSCK=20 MHz
Standby Current	Typ: 3 μA, Max: 6 μA
Input Leakage Current	Max: ±1 μA
Output Leakage Current	Max: ±1 μA
Input HIGH Voltage	Min: 0.7 × VDD, Max: VDD + 0.3 V
Input LOW Voltage	Min: -0.3 V, Max: 0.3 × VDD
Output HIGH Voltage	Min: VDD - 0.8 V @ IOH=-2 mA
Output LOW Voltage	Max: 0.4 V @ IOL=2 mA
Endurance	100 trillion (10^14) read/writes
Data Retention	151-year
Electrostatic Discharge Voltage	Charged Device Model: 500 V
Latch-up Current	> 140 mA

All parameters (9)ExpandCollapse

AC and DC characteristics
SCK Frequency	Up to 20 MHz
Environment and package
Ambient Temperature (TA)	-40 °C to +85 °C
Package	8-pin SOIC, 8-pin DFN
Other
Data Retention	151-year
Endurance	100 trillion (10^14) read/writes
Interface	SPI
Memory Capacity	64-Kbit
Organization	8K × 8
VDD	2.7 V to 3.65 V

Pinout and package

Pin	Name	Function
1	CS	(Chip Select, active LOW)
2	SO	(Serial Output)
3	WP	(Write Protect, active LOW)
4	VSS	(Ground)
5	SI	(Serial Input)
6	SCK	(Serial Clock)
7	HOLD	(Hold, active LOW)
8	VDD	(Power Supply)

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DatasheetDatasheet · 880.3 KB · 2026-11-04

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