Bộ 2 mô đun đầu đọc thẻ nhớ Tf Sd Micro

Giới thiệu Bộ 2 mô đun đầu đọc thẻ nhớ Tf Sd Micro

2 shots
The module (Microsd card adapter) Micro sd, through file system and spi interface driver, microcomputer system can complete microsd card file read and write. Users can use de-own sd card library to complete the initialization and read-writing module features as follows::

- support to micro sd cards、 micro sdhc card (High-speed cards)

- plate-load level conversion circuits, interface level can be 5 v or 3.3v

- power supply 4.5v~5.5v, 3.3v

- communication interface as standard spi interface

5.4 m2, easy to install

Projects

Minimum

Typical values

Maximum value

Unit

Power voltage vcc

4.5

5

5.5

V

Current

0.2

80

200

Ma

Interface level

3.3 or 5

V

Type of support card

Micro sd card (2g), mirco sdhc card (32g)

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Size

42x24 x 12

Mm

Weight

5

G

The interface of the mirco sd card module is shown below:
Control interface: Total 6 pins (Gnd、 vcc、 miso、 mosi、 sck、 cs), gnd land, vcc for power supply, miso、 mosi、 sck spi bus, cs

3.3v: Ldo 3.3v、 micro sd

Level conversion circuit: Conversion of signals to micro sd cards to 3.3v, microsd card miso signal to control interface direction is also converted to 3.3v, general avr single chip computer system can read the signal

Micro sd: It 's a self-bounce-type card, convenient card insertion.

Positioning holes: 4 m2, aperture is 2.2mm, make the module easy to install and position, implementation of inter-module combination

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