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AT45DB641E-MHN2B-T

RENESAS · NOR FLASH · UDFN-8(5x6)

AT45DB641E-MHN2B-T from RENESAS, in a UDFN-8(5x6). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	SI	input	Serial Input shifts in all command, address and data bits, latched on the rising edge of SCK, and is ignored whenever the device is deselected (CS deasserted).
2	SCK	input	Serial Clock controls data flow to and from the device, with input on SI latched on the rising edge and output on SO clocked out on the falling edge of SCK.
3	RESET	input	Active-low reset terminates the operation in progress and holds the internal state machine idle while low; drive it high externally if unused.
4	CS	input	Active-low Chip Select selects the device when asserted, while deasserting it deselects the device into standby (not Deep Power-Down) and puts SO in high impedance; a high-to-low transition starts an operation and a low-to-high transition ends it.
5	WP	input	Active-low Write Protect protects all sectors specified in the Sector Protection Register against program and erase regardless of the Enable Sector Protection command; it is internally pulled high and may float if hardware protection is unused, though connecting it to VCC is recommended.
6	VCC	power_in	Device power supply (1.7 V to 3.6 V); operation at invalid VCC voltages can produce spurious results and must not be attempted.
7	GND	power_in	Ground reference for the power supply, which must be connected to system ground.
8	SO	output	Serial Output shifts data out of the device on the falling edge of SCK and is in a high-impedance state whenever the device is deselected (CS deasserted).
9	EP	passive	Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter	Value
Manufacturer	RENESAS
Package	UDFN-8(5x6)
Category	Memory
Pins	9

CAD (KiCad official)

Symbol: AT45DB641E-MHN2B-T
Footprint: Package_DFN_QFN:DFN-S-8-1EP_6x5mm_P1.27mm
3D model: UDFN-8(5x6) (KiCad packages3D, STEP)
3D model files: at45db641e-mhn2b-t-etched.step / at45db641e-mhn2b-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); at45db641e-mhn2b-t.step / at45db641e-mhn2b-t.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: RENESAS datasheet (78 pp, sha256 68e11e541c20f37e, retrieved 2026-10-28, tier: manufacturer)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF