T

T

S

2

5

6

M

R

M

M

C

4

4

256MB MMCmobile

Transcend Information Inc.

1

Description

TS256MRMMC4 is a 256MB MMCmobile memory

card. It’s a fastest, low-power, highly integration

memory card. TS256MRMMC4 is designed to

provide an inexpensive, mechanically robust storage

medium in card form for multimedia consumer

applications and mobile devices (handheld PCs,

digital cameras, MP3 players, etc.) to store, copy,

and move data at high-speed transfer rate.

Placement

Features

• Storage Capacity: 256MB

• Support Dual Operating Voltage: 2.7~3.6V/1.65~1.95V

• Support clock frequencies: 0~52MHz

• Support different Bus width: x1, x4, x8

• Operating Temperature: -25°C ~ 85°C

• Storage Temperature:-40℃~85℃

• Data access mode: Word mode

• Data Transfer Rate(Maximum):

Read:16MB/sec,Write:15MB/sec

•

Fully

compatible

with

MultiMediaCard

system

specification version 4.0 and backwards compatibility with

previous specification

• Form Factor: 18mm x 24mm x 1.4mm

Front

Back

S: Power Supply; I:Input; O:Output; PP:Push-Pull; OD:Open-Drain; NC:Not Connected

Pin Definition

MMC Mode

SPI Mode

Pin No.

Name

Type

Description

Name

Type

Description

1

DAT3

I/O/PP

Data

CS

I

Chip select

2

CMD

I/O/PP/OD

Command/Response

DI

I/PP

Data in

3

VSS1

S

Ground

VSS

S

Ground

4

VDD

S

Power supply

VDD

S

Power supply

5

CLK

I

Clock

SCLK

I

Clock

6

VSS2

S

Ground

VSS2

S

Ground

7

DAT0

I/O/PP

Data

DO

O/PP

Data out

8

DAT1

I/O/PP

Data

Not used

9

DAT2

I/O/PP

Data

Not used

10

DAT4

I/O/PP

Data

Not used

11

DAT5

I/O/PP

Data

Not used

12

DAT6

I/O/PP

Data

Not used

13

DAT7

I/O/PP

Data

Not used