Specification	SST39WF400B-70-4C-B3KE

Access Time	70 ns
Memory Format	FLASH
Memory Interface	Parallel
Memory Organization	256 K
Memory Size	512 kb
Memory Type	Non-Volatile
Mounting Type	Surface Mount
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Package / Case	48-TFBGA
Supplier Device Package	48-TFBGA
Technology	FLASH
Voltage - Supply [Max]	1.95 V
Voltage - Supply [Min]	1.65 V
Write Cycle Time - Word, Page	40 µs

SST39WF400B Series

4Mb 1.65-1.95V Parallel Flash

Part	Access Time	Voltage - Supply [Max]	Voltage - Supply [Min]	Memory Organization	Mounting Type	Write Cycle Time - Word, Page	Memory Size	Package / Case	Supplier Device Package	Memory Type	Operating Temperature [Max]	Operating Temperature [Min]	Technology	Memory Format	Memory Interface
Microchip Technology SST39WF400B-70-4C-B3KE	70 ns	1.95 V	1.65 V	256 K	Surface Mount	40 µs	512 kb	48-TFBGA	48-TFBGA	Non-Volatile	70 °C	0 °C	FLASH	FLASH	Parallel
Microchip Technology SST39WF400B-70-4I-MAQE	70 ns	1.95 V	1.65 V	256 K	Surface Mount	40 µs	512 kb	48-WFBGA	48-WFBGA (6x4)	Non-Volatile	85 °C	-40 °C	FLASH	FLASH	Parallel
Microchip Technology SST39WF400A-90-4I-B3KE-T	90 ns	1.95 V	1.65 V	256 K	Surface Mount	40 µs	512 kb	48-TFBGA	48-TFBGA	Non-Volatile	85 °C	-40 °C	FLASH	FLASH	Parallel
Microchip Technology SST39WF400B-70-4C-MAQE-T	70 ns	1.95 V	1.65 V	256 K	Surface Mount	40 µs	512 kb	48-WFBGA	48-WFBGA (6x4)	Non-Volatile	70 °C	0 °C	FLASH	FLASH	Parallel
Microchip Technology SST39WF400B-70-4C-MAQE	70 ns	1.95 V	1.65 V	256 K	Surface Mount	40 µs	512 kb	48-WFBGA	48-WFBGA (6x4)	Non-Volatile	70 °C	0 °C	FLASH	FLASH	Parallel
Microchip Technology SST39WF400A-90-4I-ZKE	90 ns	1.95 V	1.65 V	256 K	Surface Mount	40 µs	512 kb	48-VFBGA	48-CSP	Non-Volatile	85 °C	-40 °C	FLASH	FLASH	Parallel
Microchip Technology SST39WF400B-70-4I-MAQE-T	70 ns	1.95 V	1.65 V	256 K	Surface Mount	40 µs	512 kb	48-WFBGA	48-WFBGA (6x4)	Non-Volatile	85 °C	-40 °C	FLASH	FLASH	Parallel
Microchip Technology SST39WF400A-90-4I-M1QE	90 ns	1.95 V	1.65 V	256 K	Surface Mount	40 µs	512 kb	48-WFBGA	48-WFBGA (6x4)	Non-Volatile	85 °C	-40 °C	FLASH	FLASH	Parallel
Microchip Technology SST39WF400A-90-4C-M1QE	90 ns	1.95 V	1.65 V	256 K	Surface Mount	40 µs	512 kb	48-WFBGA	48-WFBGA (6x4)	Non-Volatile	70 °C	0 °C	FLASH	FLASH	Parallel
Microchip Technology SST39WF400A-90-4I-M1QE-T	90 ns	1.95 V	1.65 V	256 K	Surface Mount	40 µs	512 kb	48-WFBGA	48-WFBGA (6x4)	Non-Volatile	85 °C	-40 °C	FLASH	FLASH	Parallel

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tray	480	$ 1.92
Microchip Direct	TRAY	1	$ 2.42
		25	$ 2.22
		100	$ 1.86
		1000	$ 1.62
		5000	$ 1.54
Newark	Each	100	$ 1.92

Description

General part information

SST39WF400B Series

The SST39WF400B is a 256K x16 CMOS Multi-Purpose Flash (MPF) manufactured with proprietary, high-performance CMOS SuperFlash technology. The split-gate cell design and thick-oxide tunneling injector attain better reliability and manufacturability compared to alternate approaches. The SST39WF400B writes (Program or Erase) with a 1.65-1.95V power supply. This device conforms to JEDEC standard pin assignments for x16 memories.

Documents

Technical documentation and resources

SST39WF400B-70-4C-B3KE

Deep-Dive with AI

SST39WF400B-70-4C-B3KE

Deep-Dive with AI

Technical Specifications

SST39WF400B Series

Pricing

Description

SST39WF400B Series

Documents

SST39WF400B Data Sheet - 4 Mbit (x16) Multi-Purpose Flash

Memory Products Brochure

Utility Metering Brochure

Product Selection Guide

39 Series Brief

SST39WF400B Series