Bit-Tree Creativity - TF Card Read & Write Module

TF Card Read & Write Module (A038)

BIT-TREE TF card read-write module supports high-speed reading and writing of MicroSD/TF cards via SPI communication interface. It adopts 5V power input with built-in 3.3V voltage regulation and level conversion, compatible with FAT16/FAT32 file systems. It can be applied to data logging, configuration storage, file recording for maker projects and teaching programs.

High-speed SPI read & write

Safe 5V regulated power supply

Large storage capacity available

BIT-TREE CREATIVITY

STEAM skills like programming will be a core competency for the next generation, and the time to cultivate this ability is now.

Parameter Category	Item	Specification Details
Basic Information	Product Model	A038
Basic Information	Module Name	TF Card Read‑Write Module (A038)
Basic Information	Core Function	MicroSD/TF card read‑write, supports FAT32 file system operations
Basic Information	PCB Dimension	48.00mm × 30.00mm
Basic Information	Product Weight	Weight with enclosure: 15g; Bare‑board weight: 6g
Basic Information	Typical Applications	Data recorders, device log storage, configuration file reading & writing, multimedia data storage
Electrical Parameters	Input Supply Voltage	5V DC; On‑board LDO regulator outputs 3.3V for TF card
Electrical Parameters	Normal Operating Current	10~50mA; Peak read‑write current approx. 100mA
Electrical Parameters	Communication Bus	SPI communication mode, maximum rate above 10MHz
Electrical Parameters	Compatible Memory Cards	MicroSD/TF card (SD/SDHC/SDXC), supports FAT16/FAT32 file systems
On‑board Components	Integrated Devices	Level‑shifting chip, LDO regulator chip, TF card socket, PWR power indicator LED
CN1 Interface Pin Definition	GND	Power common ground; must share ground with the single‑chip microcontroller
CN1 Interface Pin Definition	VCC	Module power‑supply pin, connect to 5V power source
CN1 Interface Pin Definition	MISO	SPI Master‑In / Slave‑Out; connect to MCU MISO pin
CN1 Interface Pin Definition	MOSI	SPI Master‑Out / Slave‑In; connect to MCU MOSI pin
CN1 Interface Pin Definition	SCK	SPI synchronous clock; connect to MCU SCK pin
CN1 Interface Pin Definition	CS	SPI chip‑select signal; connect to general‑purpose MCU IO pin, active‑low
Packaging Solution	Optional Packaging	① Anti‑static bag soft package ② White card hanging blister box ③ Kraft paper carton

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