Transcend TS256MUSD, TS2GUSD-1, TS2GUSD-MS, TS512MUSD-MS, TS512MUSD DATASHEET

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Description

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microSD Memory Card

Features

Transcend microSD card series are non-volatile,

which means no external power is required to retain

the information stored on it. Besides, it is also a

solid-state device that without moving parts to skip or

break down. Based on original NAND flash chip,

Transcend microSD can offer an incredible

combination of fast data transfer, great flexibility,

excellent security and incredibly small size.

Placement

Front Back

Pin Definition

Pin No.

1

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3

4

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6

7

Name Type Description Name Type Description

DAT2 I/O/PP

CD/DAT3 I/O/PP Card Detect / Data Line [Bit3]

CMD

V

DD

CLK I Clock

V

SS

DAT0 I/O/PP Data Line [Bit0]

PP Command / Response

S Supply voltage

S Supply voltage ground

1 2 3 4 5 6 7 8

SD Mode SPI Mode

Data Line [Bit2]

8

DAT1 I/O/PP Data Line [Bit1]

S: Power Supply; I:Input; O:Output; PP:Push-Pull

• ROHS compliant product.

• Operating Voltage: 2.7 ~ 3.6V

• Operating Temperature: -25 ~ 85°C

• Durability: 10,000 insertion/removal cycles

• Fully compatible with SD card spec. v1.1

• Comply with SD Association File System Specification

• Mechanical Write Protection Switch with microSD adapter

• SD Host allows MultiMediaCard upward compatibility

• Form Factor: 11mm x 15mm x 1mm

RSV Reserved

CS I Chip Select

DI I Data In

V

DD

SCLK I Clock

V

SS

DO O/PP Data out

RSV Reserved

S

Supply voltage

Supply voltage ground

Transcend Information Inc.

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Architecture

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microSD Memory Card

Transcend Information Inc.

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Bus Operating Conditions

• General

Parameter Symbol Min. Max. Unit Remark

Peak voltage on all lines -0.3 VDD+0.3 V

All Inputs

Input Leakage Current -10 10 µA

All Outputs

Output Leakage Current -10 10 µA

• Power Supply Voltage

Parameter Symbol Min. Max. Unit Remark

Supply voltage V

Supply voltage specified in OCR register Except CMD0, 15,55,

Supply voltage differentials (V

Power up time 250 ms From 0v to V

Note. The current consumption of any card during the power-up procedure must not exceed 10 mA.

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SS1

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, V

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SS2

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DD

) -0.3 0.3 V

2.0 3.6 V CMD0, 15,55,ACMD41

microSD Memory Card

commands

ACMD41 commands

DD

Min.

• Bus Signal Line Load

The total capacitance C capacitance C C

= C

L

HOST

Where N is the number of connected cards. Requiring the sum of the host and bus capacitances not to exceed 30 pF for up to 10 cards, and 40 pF for up to 30 cards, the following values must not be exceeded:

Bus signal line capacitance C

Single card capacitance C

Maximum signal line inductance 16 nH f

Pull-up resistance inside card (pin1) R

Note that the total capacitance of CMD and DAT lines will be consist of C connected separately to the SD Memory Card host.

Pull-up resistance R

Bus signal line capacitance C

Transcend Information Inc.

itself and the capacitance C

BUS

+ C

BUS

Parameter Symbol Min. Max. Unit Remark

the CLK line of the SD Memory Card bus is the sum of the bus master capacitance C

L

of each card connected to this line:

CARD

+ Ν*C

CARD

CMD

L

CARD

DAT3

, R

L

DAT

100 pF f

10 pF

10 90 KΩ May be used for card

, C

HOST

10 100 KΩ To prevent bus floating

250 pF f

3

and one C

BUS

≤ 20 MHz, 7 cards

PP

≤ 20 MHz

PP

detection

≤ 5 MHz, 21 cards

PP

HOST

only since they are

CARD

, the bus

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• Bus Signal Levels

As the bus can be supplied with a variable supply voltage, all signal levels are related to the supply voltage.

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microSD Memory Card

To meet the requirements of the JEDEC specification JESD8-1A, the card input and output voltages shall be within the following specified ranges for any V

Parameter Symbol Min. Max. Unit Remark

Output HIGH voltage V

Output LOW voltage V

Input HIGH voltage V

Input LOW voltage V

of the allowed voltage range:

DD

OH

OL

IH

IL

0.75* V

0.625* V

V

DD

0.125* V

DD

– 0.3 0.25* V

SS

V I

DD

V

+ 0.3 V

DD

= -100 μA @VDD min

OH

V I

V

= 100 μA @VDD min

OL

Transcend Information Inc.

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• Bus Timing (Default)

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microSD Memory Card

Parameter Symbol Min Max. Unit Remark

Clock CLK (All values are referred to min (VIH) and max (VIL)

Clock frequency Data Transfer Mode f

Clock frequency Identification Mode

(The low freq. is required for MultiMediaCard

compatibility.)

Inputs CMD, DAT (referenced to CLK)

Input set-up time t

Input hold time t

Outputs CMD, DAT (referenced to CLK)

Output Delay time t

PP

f

OD

t

WL

t

WH

t

TLH

t

THL

ISU

ODLY

0 25 MHz C

0 400 KHz C

10 ns C

50 ns C

IH

50 ns C

10 ns C

50 ns C

10 ns C

5 ns C

0 14 ns C

≤ 100 pF, (7 cards)

L

≤ 250 pF, (21 cards)

L

≤ 100 pF, (7 cards) Clock low time

L

≤ 250 pF, (21 cards)

L

≤ 100 pF, (7 cards) Clock high time

L

≤ 250 pF, (21 cards)

L

≤ 100 pF, (7 cards) Clock rise time

L

≤ 250 pF, (21 cards)

L

≤ 100 pF, (7 cards) Clock fall time

L

≤ 250 pF, (21 cards)

L

≤ 25 pF, (1 cards)

L

≤ 25 pF, (1 cards)

L

≤ 25 pF, (1 cards)

L

Transcend Information Inc.

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• Bus Timing (High-speed Mode)

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microSD Memory Card

Parameter Symbol Min Max. Unit Remark

Clock CLK (All values are referred to min (VIH) and max (VIL)

Clock frequency Data Transfer Mode f

Clock low time t

Clock high time t

Clock rise time t

Clock fall time t

Inputs CMD, DAT (referenced to CLK)

Input set-up time t

Input hold time t

Outputs CMD, DAT (referenced to CLK)

Output Delay time during Data Transfer Mode t

Output Hold time t

Total System capacitance for each line

1) In order to satisfy severe timing, host shall drive only one card.

1

PP

WL

WH

TLH

THL

ISU

IH

ODLY

OH

C

L

0 50 MHz C

7 ns C

3 ns C

6 ns C

2 ns C

14 ns C

2.5 ns C

40 pF (1 card)

CARD

≤ 40 pF, (1 card)

L

≤ 40 pF, (1 card)

L

≤ 10 pF, (1 card) ≤ 10 pF, (1 card)

≤ 10 pF, (1 card) ≤ 10 pF, (1 card) ≤ 10 pF, (1 card)

≤ 10 pF, (1 card) ≤ 10 pF, (1 card)

Transcend Information Inc.

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Reliability and Durability

Temperature Operation: -25°C / 85°C (Target spec)

Moisture and corrosion Operation: 25°C / 95% rel. humidity

Durability 10000 mating cycles

Bending 10N

Torque 0.10N*m , +/- 2.5deg max

Drop test 1.5m free fall

UV light exposure UV: 254nm, 15Ws/cm² according to ISO 7816-1

Visual inspection

Shape and form

Above technical information is based on standard data and tested to be reliable. However, Transcend makes no warranty, either expressed or implied, as to its accuracy and assumes no liability in connection with the use of this product. Transcend reserves the right to make changes in specifications at any time without prior notice.

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Storage: -40°C (168h) / 85°C (500h)

Junction temperature: max. 95°C

Storage: 40°C / 93% rel. hum./500h

Salt Water Spray: 3% NaCl/35C; 24h acc. MIL STD Method 1009

No warppage; no mold skin; complete form; no cavities surface smoothness <= -0.1

mm/cm² within contour; no cracks; no pollution (fat, oil dust, etc.)

microSD Memory Card

Transcend Information Inc.

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Register Information

Within the card interface six registers are defined: OCR, CID, CSD, RCA, DSR and SCR. These can be accessed only by corresponding commands (see Chapter 4.7). The OCR, CID, CSD and SCR registers carry the card/content specific information, while the RCA and DSR registers are configuration registers storing actual configuration parameters.

1. OCR register

The 32-bit operation conditions register stores the V register includes a status information bit. This status bit is set if the card power up procedure has been finished. The OCR register shall be implemented by the cards which do not support the full operating voltage range of the SD Memory Card bus, or if the card power up extends the definition in the timing diagram.

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microSD Memory Card

DD voltage profile of the card. In addition, this

A voltage range is not supported if the corresponding bit value is set to LOW. As long as the card is busy, the corresponding bit (31) is set to LOW.

Transcend Information Inc.

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Transcend TS256MUSD, TS2GUSD-1, TS2GUSD-MS, TS512MUSD-MS, TS512MUSD DATASHEET

Specifications and Main Features

Frequently Asked Questions

User Manual