sandisk SDSM-32-101-01 User guide

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SmartMedia™ 32 MByte

Product Manual

CORPORATE HEADQUARTERS

140 Caspian Court

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408-542-0500

FAX: 408-542-0503

URL: http://www.sandisk.com

SanDisk® Corporation general policy does not recommend the use of its products in life support applications where in a failure or malfunction of the product may directly threaten life or injury. Per SanDisk Terms and Conditions of Sale, the user of SanDisk products in life support applications assumes all risk of such use and indemnifies SanDisk against all damages.

The information in this manual is subject to change without notice.

SanDisk Corporation shall not be liable for technical or editorial errors or omissions contained herein; nor for incidental or consequential damages resulting from the furnishing, performance, or use of this material.

All parts of the SanDisk documentation are protected by copyright law and all rights are reserved. This documentation may not, in whole or in part, be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine readable form without prior consent, in writing, from SanDisk Corporation.

SanDisk and the SanDisk logo are registered trademarks of SanDisk Corporation. SmartMedia is a trademark of Toshiba Corporation.

Product names mentioned herein are for identification purposes only and may be trademarks and/or registered trademarks of their respective companies.

SanDisk products are covered or licensed under one or more of the following U.S. Patent Nos. 5,070,032; 5,095,344; 5,168,465; 5,172,338; 5,198,380; 5,200,959; 5,268,318; 5,268,870; 5,272,669; 5,418,752; 5,602,987. Other U.S. and foreign patents awarded and pending.

Lit. No. 80-36-00169 Rev. 1.1 6/01 Printed in U.S.A.

Revision History

• Revision 1—initial release.

• Revision 1.1—corrected typo on memory cell array; changed from 128K to 64K, page 5.

SmartMedia 32 MByte Product Manual

Table of Contents

1.0 Description..............................................................................................................................5

1.1 Features...................................................................................................................................................5

2.0 Timing Diagrams ..................................................................................................................12

3.0 Pin Functions ........................................................................................................................20

3.1 Pin Descriptions...................................................................................................................................21

3.2 Schematic Cell Layout and Address Assignment...........................................................................22

3.3 Operation Mode: Logic and Command Tables...............................................................................23

4.0 Device Operation ..................................................................................................................25

4.1 Read Mode (1)......................................................................................................................................25

4.2 Read Mode (2)......................................................................................................................................26

4.3 Read Mode (3)......................................................................................................................................27

4.4 Sequential Read (1) (2) (3) ..................................................................................................................28

4.5 Status Read...........................................................................................................................................28

4.6 Auto Page Program.............................................................................................................................30

4.7 Auto Block Erase .................................................................................................................................30

4.8 Reset ......................................................................................................................................................31

4.9 ID Read .................................................................................................................................................32

5.0 Application Notes and Comments ........................................................................................33

5.1 Prohibition of Unspecified Commands............................................................................................33

5.2 Pointer Control for 00H, 01H and 50H.............................................................................................33

5.3 Acceptable Commands After Serial Input Command 80H...........................................................34

5.4 Status Read During a Read Operation .............................................................................................35

5.5 Auto-Programming Failure ...............................................................................................................35

R/B

5.6

5.7 Status After Power-on ........................................................................................................................36

5.8 Power-on/off Sequence......................................................................................................................36

5.9 Note Regarding the

5.10 When Four Address Cycles are Input ..............................................................................................38

5.11 Several Programming Cycles on the Same Page (Partial Page Program)....................................39

5.12 Note Regarding the

5.13 Invalid Blocks (Bad Blocks)................................................................................................................40

5.14 Failure Phenomena for Program and Erase Operations................................................................41

5.15 Bad Block Test Flow............................................................................................................................ 42

: Termination for the Ready/Busy Pin (

Signal.......................................................................................................37

Signal.........................................................................................................39

R/B

)........................................................................36

6.0 Handling Precautions............................................................................................................43

7.0 Package Dimensions .............................................................................................................44

7.1 SmartMedia Card Dimensions..........................................................................................................44

SmartMedia 32 MByte Product Manual

Table of Contents (continued)

Ordering Information and Technical Support................................................................................45

Ordering Information.....................................................................................................................47

SmartMedia Card...........................................................................................................................................47

Technical Support Services............................................................................................................48

Direct SanDisk Technical Support...............................................................................................................48

SanDisk Worldwide Web Site...................................................................................................................... 48

SanDisk Worldwide Sales Offices.................................................................................................51

Limited Warranty...........................................................................................................................53

1.0 Description

SmartMedia 32 MByte Product Manual

The SanDisk SmartMedia Card (SDSM-32-101-01) is a 3.3-V 256-Mbit (276,824,064) NAND Electrically Erasable and Programmable Read-Only Memory (NAND E

PROM) device, organized as 528 bytes X 32 pages X 2048 blocks. This device has a 528-byte static register which allows program and read data to be transferred between the register and the memory cell array in 528-byte increments. The Erase operation is implemented in a single block unit (16 Kbytes + 512 bytes: 528 bytes X 32 pages).

The SanDisk SmartMedia Card is a serial-type memory device which uses the I/O pins for both address and data input and output as well as for command inputs. The Erase and Program operations are automatically executed making the device ideal for applications such as solid-state file storage, voice recording, image storage for digital cameras and other devices which require high-density non-volatile memory data storage. The data stored in the SmartMedia Card needs to comply with the data format standardized by the SSFDC Forum in order to maintain compatibility with other SmartMedia

systems.

1.1 Features

• Organization

- Memory cell array 528 × 64K × 8

- Data Register 528 × 8

- Page size 528 bytes

- Block size (16K + 512) bytes

•Modes

- Read, Reset, Auto Page Program

- Auto Block Erase, Status Read

• Mode control

- Serial Input/Output

- Command control

• Complies with the SmartMedia Electrical Specification and Data Format Specification issued by SSFDC Forum (SmartMedia Card).

• Power Supply— V

• Access time

- Cell array to register 10 µs max

- Serial Read Cycle 50 ns min

• Operating current

- Read (50 ns cycle) 10 mA typ.

- Program (avg.) 10 mA typ.

- Erase (avg.) 10 mA typ.

- Standby 100 µA max

•Package

- SDSM-32-101-01: SmartMedia Card (Weight: 1.8 g. typical)

= 3.3 V ± 0.3 V

SmartMedia 32 MByte Product Manual

SDSM-32-101-01

123456

CLE ALE WE WP I/O2I/O1 I/O3 I/O4V

22 21 20 19 18 17 16 15 14 13 12

CE RE R/B OP LVD I/O8 I/O7 I/O6 I/O5 V

7891011

VssV

I/O1 to 8

RE CLE ALE

WP R/B

OP LVD V

PIN NAMES

I/O Port Chip Enable Write Enable

Read Enable Command Latch Enable Address Latch Enable Write Protect Ready/Busy Option Pin (GND Input) Low Voltage Detect Power Supply Ground

Figure 1-1 SDSM-32-101-01 SmartMedia Card Pin Assignments (Top View)

Figure 1-2 Block Diagram

SmartMedia 32 MByte Product Manual

Table 1-1 Absolute Maximum Ratings

Symbol Rating Value Unit

I/O

SOLDER

STG

OPR

Power Supply Voltage

Input Voltage

Input /Output Voltage

−0.6 to 4.6

0.6 V to V

(≤4.6 V)

+ 0.3 V

Soldering Temperature (10s) - °C

Storage Temperature

−20 to 65

Operating Temperature 0 to 55 °C

°C

Table 1-2 Capacitance *(Ta = 25°C, f = 1 MHz)

Symbol Parameter Condition Min. Max. Unit

Input

Output

VIN = 0 V

= 0 V

OUT

* This parameter is periodically sampled and is not tested for every device.

(1)

Table 1-3 Valid Blocks

Symbol Parameter MIN MAX Unit

(1) The SmartMedia Card occasionally contains unusable blocks. Refer to section 5.13.

Number of Valid Blocks 2008 2048 Blocks



10 pF

Table 1-4 Recommended DC Operating Conditions

Symbol Parameter Min. Typ. Max. Unit

Power Supply

Voltage

High Level Input

Voltage

Low Level Input

Voltage

* −2V (pulse width ≤ 20 ns)

3.0 3.3 3.6 V

2.0

−0.3*



+ 0.3

0.8 V

SmartMedia 32 MByte Product Manual

Table 1-5 DC Characteristics

(Ta = 0° to 55° C, V

Symbol Parameter Condition Min. Typ. Max. Unit

= 3.3V ± 0.3V)

IOL (

CCO1

CCO3

CCO4

CCO5

CCO7

CCO8

CCS1

CCS2

R/B

Input Leakage Current

Output Leakage Current

Operating Current

(Serial Read)

Operating Current

(Command Input)

Operating Current

(Data Input)

Operating Current

(Address Input)

Programming Current

Erasing Current

Standby Current

High Level Output Voltage

Low Level Output Voltage

)

Output current of

R/B

= 0V to V

= 0.4V to V

OUT

= VIL, I

cycle

= VCC − 0.2V

IOH = −400 µA

IOL = 2.1 mA

= 0 mA,

OUT

= 50 ns



= V

= 0.4V

±10 µA



10 30 mA



2.4





1mA

100

0.4 V



µA

SmartMedia 32 MByte Product Manual

Table 1-6 AC Characteristics and Recommended Operating Conditions

(Ta = 0° to 55° C, V

Symbol Parameter Min. Max. Unit Notes

= 3.3V ± 0.3V)

CLS

CLH

ALS

ALH

REA

CEH

REAID

RHZ

CHZ

REH

RSTO

CSTO

RHW

WHC

WHR

AR1

CLE Setup Time 0

CLE Hold Time 10

Setup Time

Hold Time

Write Pulse Width 25

ALE Setup Time 0

ALE Hold Time 10

Data Setup Time 20

Data Hold Time 10

Write Cycle Time 50

High Hold Time

High to WE Low

Ready to RE Falling Edge

100

Read Pulse Width 35

Read Cycle Time 50

Access Time (Serial Data Access)

High Time for Last Address in Serial Read Cycle

Access Time (ID Read)



100



Data Output Hold Time 10

High to Output High Impedance

High Hold Time

Output High impedance to RE Rising Edge

Access Time (Status Read)

High to WE Low

High to CE Low

High to RE Low

ALE Low to RE Low (ID Read)

Low to RE Low (ID Read)



100



35 ns



35 ns



30 ns

20 ns



35 ns

45 ns



ns (3)

SmartMedia 32 MByte Product Manual

Table 1-6 AC Characteristics and Recommended Operating Conditions (continued)

Symbol Parameter Min. Max. Unit Notes

Memory Cell Array to Starting Address

ALE Low to RE Low (Read Cycle)

(When interrupted by

Device Reset Time (Read/Program/Erase)

AR2

CRY

RST

Notes: (1) Transition time (t

High to Ready time depends on the pull-up resistor tied to the

(2)

(3) If the delay between will stop.

If the

to CE delay is less than 30 ns, the device will not re-enter Busy state.

AC Test Conditions:

Input level: 2.4V/0.4V Input Comparison Level: 1.5V/1.5V Output Data Comparison Level: 1.5V/1.5V Output Load: 1 TTL + C

High to Busy

Last Clock Rising Edge to Busy

(in Sequential Read)

High to Ready

in Read Mode)

)

= 5 ns.

and CE is less than 200 ns and t

(100 pF)



pin. (Refer to section 5.6.)

R/B

is greater than or equal to 100 ns, reading

CEH

200 ns



200 ns

600 +

(

)

R/B

6/10/500

µs

ns (2)

µs

Figure 1-3

SmartMedia 32 MByte Product Manual

Table 1-7 Programming and Erasing Characteristics

(Ta = 0° to 55° C, V

Symbol Parameter Min. Typ. Max. Unit Notes

= 3.3V ± 0.3V)

PROG

BERASE

P/E Number of Program/Erase Cycles 300,000 (2)

Notes: (1) Refer to section 5.11.

(2) Refer to section 5.14.

Average Programming Time 200 1000

Number of Programming Cycles on

Same Page

Block Erasing Time 3 20 ms

µs

(1)

SmartMedia 32 MByte Product Manual

2.0 Timing Diagrams

Figure 2-1 Latch Timing Diagram for Command/Address/Data

Figure 2-2 Command Input Cycle Timing Diagram

SmartMedia 32 MByte Product Manual

Figure 2-3 Address Input Cycle Timing Diagram

Figure 2-4 Data Input Cycle Timing Diagram

SmartMedia 32 MByte Product Manual

Figure 2-5 Serial Read Cycle Timing Diagram

Figure 2-6 Status Read Cycle Timing Diagram

SmartMedia 32 MByte Product Manual

Figure 2-7 Read Cycle (1) Timing Diagram

Figure 2-8 Read Cycle (1) Timing Diagram When Interrupted by

SmartMedia 32 MByte Product Manual

CLE

ALE

CLS

CLH

ALH

ALS

ALH

AR 2

I/O1

to 8

R/B

CLE

ALE

01H

A0 to

Column address

A9 to

A16

A17 to

A24

REA

OUT

256 + N 256 + N + 1 527

: V

OUT

or V

Figure 2-9 Read Cycle (2) Timing Diagram

CLH

CLS

AR 2

ALH

ALS

ALH

I/O1

to 8

R/B

50H

A0 to

Column address

A9 to

A16

A17 to

A24

REA

OUT

512 + N 512 + N + 1 527

: V

OUT

or V

Figure 2-10 Read Cycle (3) Timing Diagram

SmartMedia 32 MByte Product Manual

Figure 2-11 Sequential Read (1) Timing Diagram

Figure 2-12 Sequential Read (2) Timing Diagram

SmartMedia 32 MByte Product Manual

Figure 2-13 Sequential Read (3) Timing Diagram

Figure 2-14 Auto Program Operation Timing Diagram

SmartMedia 32 MByte Product Manual

Figure 2-15 Auto Block Erase Timing Diagram

Figure 2-16 ID Read Operation Timing Diagram

SmartMedia 32 MByte Product Manual

3.0 Pin Functions

The device is a serial access memory which utilizes time-sharing input of address information. The device pinouts are configured as shown in Figure 3-1.

SDSM-32-101-01

123456

CLE ALE WE WP I/O2I/O1 I/O3 I/O4V

22 21 20 19 18 17 16 15 14 13 12

CE RE R/B OP LVD I/O8 I/O7 I/O6 I/O5 V

7891011

VssV

Figure 3-1 SmartMedia Card Pinout

I/O1 to 8

CE WE

CLE ALE

WP R/B OP

LVD V

PIN NAMES

I/O Port Chip Enable Write Enable

Read Enable Command Latch Enable Address Latch Enable Write Protect Ready/Busy Option Pin (GND Input) Low Voltage Detect Power Supply Ground

SmartMedia 32 MByte Product Manual

3.1 Pin Descriptions

Command Latch Enable: CLE

The CLE input signal is used to control loading of the operation mode command into the internal command register. The command is latched into the command register from the I/O port on the rising

edge of the

Address Latch Enable: ALE

The ALE signal is used to control loading of either address information or input data into the internal address/data register. Address information is latched on the rising edge of

Low, input data is latched.

signal while CLE is High.

if ALE is High. If ALE is

Chip Enable:

The device goes into a low-power Standby Mode when CE goes High during a Read operation. The signal is ignored when the device is in the Busy state (

operation, and will not enter Standby Mode even if the

= L), such as during a Program or Erase

R/B

input goes High. The

signal must stay

Low during the Read Mode Busy state to ensure that memory array data is correctly transferred to the data register.

Write Enable:

The

Read Enable:

The RE signal controls serial data output. Data output will be valid when RE goes low after t

signal is used to control the acquisition of data from the I/O port.

REA

. The

internal column address counter is also incremented (Address = Address + l) on this falling edge.

I/O Port: I/OI to 8

The I/O1 to 8 pins are used as ports for transferring address, command and input/output data to and from the device.

Write Protect:

The WP signal is used to protect the device from accidental programming or erasing. The internal voltage regulator is reset when

is Low. This signal is usually used for protecting the data during the

power-on/off sequence when input signals are invalid.

Ready/Busy:

R/B

The state (

R/B

output signal is used to indicate the operating condition of the device. The

R/B

signal is in Busy

= L) during the Program, Erase and Read operations and will return to Ready state (

R/B

= H)

after completion of the operation. The output buffer for this signal is an open drain.

Option Pin: OP

This pin has to be connected to GND.

Low Voltage Detect: LVD (SmartMedia Card only)

The LVD signal is used to detect the power supply voltage level.

SmartMedia 32 MByte Product Manual

3.2 Schematic Cell Layout and Address Assignment

The Program operation works on page units while the Erase operation works on block units.

Figure 3-2 Schematic Cell Layout

Table 3-1 Addressing

I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 I/O8

I/O1

First cycle A0 A1 A2 A3 A4 A5 A6 A7 A9 to A24: Page address

Second cycle A9 A10 A11 A12 A13 A14 A15 A16 (A14 to A24: Block address

Third cycle A17 A18 A19 A20 A21 A22 A23 A24 A9 to A13: NAND address in block)

* : A8 is automatically set to Low or High by a 00H command or a 01H command.

A0 to A7: Column address

SmartMedia 32 MByte Product Manual

3.3 Operation Mode: Logic and Command Tables

The operation modes such as Program, Erase, Read and Reset are controlled by the eleven different command operations shown in Table 3-3. Address input, command input and data input/output are

controlled by the CLE, ALE,

Table 3-2 Logic Table

and

signals, as shown in Table 3-2.

CLE ALE

Command Input H L L H

Data Input L L L H

Address input L H L H

Serial Data Output L L L H

During Programming (Busy)

During Erasing (Busy)

Program, Erase Inhibit

H: VIH, L: VIL, *: VIH or V

*****

SmartMedia 32 MByte Product Manual

Table 3-3 Command Table (HEX)

First Cycle

Second

Cycle

Acceptable while Busy

Serial Data Input 80

Read Mode (1) 00

Read Mode (2) 01

Read Mode (3) 50

Reset FF

Auto Program 10

Auto Block Erase 60 D0

Status Read 70

ID Read 90



√

Table 3-4 Read Mode Operation States

CLE ALE

Output select

Output Deselect

Standby

H: VIH, L: VIL, *: VIH or V

L L L H L Data output Active

L L L H H High impedance Active

LLHH

WE RE

I/O1 to I/O8 Power

High impedance Standby

SmartMedia 32 MByte Product Manual

4.0 Device Operation

4.1 Read Mode (1)

Read Mode (l) is set when an 00H command is issued to the Command register. Refer to Figure 4-1 below for timing details and the block diagram.

Figure 4-1 Read Mode (1) Operation

SmartMedia 32 MByte Product Manual

4.2 Read Mode (2)

Figure 4-2 Read Mode (2) Operation

SmartMedia 32 MByte Product Manual

4.3 Read Mode (3)

Read Mode (3) has the same timing as Read Modes (1) and (2) but is used to access information in the extra 16-byte redundancy area of the page. Therefore, the start pointer is set to a value between byte 512 and byte 527.

Figure 4-3 Read Mode (3) Operation

SmartMedia 32 MByte Product Manual

4.4 Sequential Read (1) (2) (3)

This mode, Sequential Read (1) (2) (3), allows the sequential reading of pages without additional address input.

Figure 4-4 Sequential Read (1) (2) (3) Operation

Sequential Read modes (1) and (2) output the contents of addresses 0 to 527 as shown above, while Sequential Read mode (3) outputs the contents of the redundant address locations only. When the pointer reaches the last address, the device continues to output the data from column address 0 (Read Modes (1) and (2)) or column address 512 (Read Mode (3)) of the next page on the next

clock signal.

4.5 Status Read

The device automatically implements the execution and verification of the Program and Erase operations. The Status Read function is used to monitor the Ready/Busy status of the device, determine the result (pass /fail) of a Program or Erase operation, and determine whether the device is in Suspend or Protect mode. The device status is output via the I/O port on the resulting information is outlined in Table 4-1.

Table 4-1 Status Output Table

Status Output

I/O1 Pass/Fail Pass: 0 Fail: 1

I/O2 Not Used 0

I/O3 Not Used 0

I/O4 Not Used 0

I/O5 Not Used 0

clock after a 70H command input. The

The Pass/Fail status on I/O1 is only valid when the device is in the Ready state.

I/O6 Not Used 0

I/O7 Ready/Busy Ready: 1 Busy: 0

I/O8

Write Protect

Protect: 0 Not Protected: 1

SmartMedia 32 MByte Product Manual

An application example with multiple devices is shown in Figure 4-5.

Figure 4-5 Application Example with Multiple Devices

Figure 4-6 Status Read Timing Application Example

System Design Note: If the

pin signals from multiple devices are wired together as shown in the

R/B

Figure 4-5, the Status Read function can be used to determine the status of each individual device.

SmartMedia 32 MByte Product Manual

4.6 Auto Page Program

The SmartMedia Card carries out an Automatic Page Program operation when it receives a 10H Program command after the address and data have been input. The sequence of command, address and data input is shown below.

Figure 4-7 Auto Page Program Operation

4.7 Auto Block Erase

The Auto Block Erase operation starts on the rising edge of which follows the Erase Setup command 60H. This two-cycle process for Erase operations acts as an extra layer of protection from accidental erasure of data due to external noise. The device automatically executes the Erase and Verify operations.

Figure 4-8 Auto Block Erase

after the Erase Start command D0H

SmartMedia 32 MByte Product Manual

4.8 Reset

The Reset mode stops all operations. For example, in the case of a Program or Erase operation the internally generated voltage is discharged to 0 volts and the device enters Wait state. The address and data registers are set as follows after a Reset:

• Address register: All “0”

• Data register: All “1”

• Operation Mode: Wait state

Figure 4-9 through 4-13 show the response to an FFH Reset command input during the various device operations.

Figure 4-9 When a Reset Command (FFH) is Input During Programming

Figure 4-10 When a Reset Command (FFH) is Input During Erasing

Figure 4-11 When a Reset Command (FFH) is Input During a Read Operation

Figure 4-12 When a Status Read Command (70H) is Input After a Reset

SmartMedia 32 MByte Product Manual

Figure 4-13 When Two or More Reset Commands are Input in Succession

4.9 ID Read

The SmartMedia Card contain ID codes which identify the device type and the manufacturer. The ID codes can be read out under the following timing conditions:

Figure 4-14 ID Read Timing

Table 4-2 Code Table

I/O8 I/O7 I/O6 I/O5 I/O4 I/O3 I/O2 I/O1 Hex Data

Maker code 10011000 98H

Device code 01110101 75H

SmartMedia 32 MByte Product Manual

5.0 Application Notes and Comments

5.1 Prohibition of Unspecified Commands

The operation commands are listed in Table 3-3. Input of a command other than those specified in Table 3-3 is prohibited. Stored data may be corrupted if an unknown command is entered during the command cycle.

5.2 Pointer Control for 00H, 01H and 50H

The device has three Read modes which set the destination of the pointer. Table 5-1 shows the destination of the pointer, and Figure 5-1 is a block diagram of their operations.

Table 5-1 Pointer Destination

Read Mode Command Pointer

(1) 00H 0 to 255

(2) 01H 256 to 511

(3) 50H 512 to 527

Figure 5-1 Pointer Control

The pointer is set to region A by the 00H command, to region B by the 01H command and to region C by the 50H command. For example, the 00H command must be input to set the pointer back to region A when the pointer is pointing to region C.

SmartMedia 32 MByte Product Manual

Figure 5-2 Example of How to Set Pointer

5.3 Acceptable Commands After Serial Input Command 80H

Once the Serial Input command 80H has been input, do not input any command other than the Program Execution command 10H or the Reset command FFH.

Figure 5-3 Serial Input Command

SmartMedia 32 MByte Product Manual

5.4 Status Read During a Read Operation

Figure 5-4 Status Read During a Read Operation

The device status can be read out by inputting the Status Read command 70H in Read mode. Once the device has been set to Status Read mode by a 70H command, the device will not return to Read mode.

Therefore, a Status Read during a Read operation is prohibited.

However, when the Read command 00H is input during [A], Status mode is reset and the device returns to Read mode. In this case, data output starts automatically from address N and address input is unnecessary.

5.5 Auto-Programming Failure

Figure 5-5 Auto-programming Failure

SmartMedia 32 MByte Product Manual

5.6

A pull-up resistor needs to be used for termination because the circuit.

R/B

: Termination for the Ready/Busy Pin (

Figure 5-6 Termination of the Ready/Busy Pin

R/B

)

5.7 Status After Power-on

buffer consists of an open drain

R/B

Although the device is set to Read mode after power-on, the following sequence is necessary because some input signals may not be stable at power-on.

Figure 5-7 Status After Power-on

5.8 Power-on/off Sequence

The sequence is necessary:

signal is useful for protecting against data corruption at power-on/off. The following timing

Figure 5-8 Power-on/off Sequence

SmartMedia 32 MByte Product Manual

5.9 Note Regarding the

The Erase and Program operations are automatically reset when enabled and disabled as shown in the following figures:

Signal

Figure 5-9 Enable Programming

goes Low. The operations are

Figure 5-10 Disable Programming

Figure 5-11 Enable Erasing

Figure 5-12 Disable Erasing

SmartMedia 32 MByte Product Manual

5.10 When Four Address Cycles are Input

Although the SmartMedia Card may read in a fourth address, it is ignored inside the device.

Figure 5-13 Read Operation

The internal Read Operation starts when

Figure 5-14 Program Operation

goes High in the address cycle.

SmartMedia 32 MByte Product Manual

5.11 Several Programming Cycles on the Same Page (Partial Page Program)

A page can be divided into up to 10 segments. Each segment can be programmed individually as follows:

Note: The input data for unprogrammed or previously programmed page segments must be “1” (i.e. the inputs for

all page bytes outside the segment which is to be programmed should be set to all “1”).

Figure 5-15 Partial Page Program

5.12 Note Regarding the

The internal column address counter is incremented synchronously with the RE clock in Read Mode. Therefore, once the device has been set to Read Mode by an 00H, 01H or 50H command, the internal

column address counter is incremented by the

clock input pulses start before the address input, and the pointer reaches the last column address, an

internal read operation (array to register) will occur and the device will enter Busy state. (Refer to the figure below.) Hence, the

Figure 5-16 Internal Read Operation (Array to Register)

Signal

clock independently of the address input timing. If the

clock input must start after the address input.

SmartMedia 32 MByte Product Manual

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5.13 Invalid Blocks (Bad Blocks)

The SmartMedia Card occasionally contains unusable blocks. Therefore, the following issues must be recognized:

• Check to see whether the device has any bad blocks after installation into the system. Do not try to access bad blocks. A bad block does not affect the performance of good blocks because it is isolated from the bit line by the Select gate. The number of valid blocks is as follows:

Table 5-2 Number of Valid Blocks

Minimum Maximum Unit

Valid (Good)

Blocks

Figure 5-19 shows the flow for bad block testing.

2008 2048 Block

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Figure 5-17 Bad Blocks in Array

Bad Bloc

SmartMedia 32 MByte Product Manual

5.14 Failure Phenomena for Program and Erase Operations

The device may fail during a Program or Erase operation. The following possible failure modes should be considered when implementing a highly reliable system.

Table 5-3 Failure Modes

Failure Mode Detection and Counter Measure Sequence

Block Erase Failure

Page Programming Failure

Single

Bit*

Programming Failure

“1 to 0”

Status Read after Erase → Block Replacement

Status Read after Program → Block Replacement

(1) Block Verify after Program → Retry

(2) ECC

* : (1) or (2)

• ECC: Error Correction Code—Hamming code , etc. Example: 1-bit correction and 2-bit detection.

• Block Replacement

Figure 5-18 Program Fail Block Replacement

• Erase Block Replacement—When an error occurs in an Erase operation, prevent future accesses to this bad block (again by creating a table within the system or by using another appropriate scheme).

SmartMedia 32 MByte Product Manual

5.15 Bad Block Test Flow

Test Start

Block No. = 1

Blank Check

Fail

Bad Block

B No. = B No. + 1

B No. > 2048

Yes

Block No. = 1

32-Page

C-Patt Prog

Pass

Read (00H)

Pass

Block Erase

Pass

32-Page

C-Patt Prog

Pass

Read (00H)

Pass

Block Erase

Pass

Fail

C : Checkerboard pattern C : Inverted checkerboard pattern Blank check : 1 Block Read (FFH)

B No. = B No. + 1

Bad

Block

B No. = 2048

Yes

B No. = 2048

Yes

Test End

Figure 5-19 Bad Block Test Flow

SmartMedia 32 MByte Product Manual

6.0 Handling Precautions

The following precautions should be observed when handling the SanDisk SmartMedia Card:

(1) Avoid using the SmartMedia Card when the battery is low.

(2) When writing to the card, wait for the operation to complete before removing the card.

(3) The card is designed to fit easily into the system one way only. Do not force it into the slot.

(4) Do not bend the card.

(5) Do not subject the card to sudden impact.

(6) Avoid touching the connectors so as to avoid damage from static electricity. This card should be kept

in the antistatic film case when not in use.

SmartMedia 32 MByte Product Manual

7.0 Package Dimensions

7.1 SmartMedia Card Dimensions

The SanDisk SmartMedia Card dimensions are shown below in Figure 7-1.

Figure 7-1 SmartMedia Card Dimensions

Ordering Information

and

Technical Support

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Ordering Information and Technical Support

Ordering Information

To order SanDisk products directly from SanDisk, call 408-542-0595.

SmartMedia Card

Model SDSM-32-101-01 32.0 MB

Ordering Information and Technical Support

Technical Support Services

Direct SanDisk Technical Support

Call SanDisk Applications Engineering at 408-542-0405 for technical support.

SanDisk Worldwide Web Site

Internet users can obtain technical support and product information along with SanDisk news and much more from the SanDisk Worldwide Web Site, 24 hours a day, seven days a week. The SanDisk Worldwide Web Site is frequently updated. Visit this site often to obtain the most up-to-date information on SanDisk products and applications. The SanDisk Web Site URL is http://www.sandisk.com.

SanDisk Sales Offices

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SanDisk Worldwide Sales Offices

Americas

SanDisk Corporate Headquarters

140 Caspian Court Sunnyvale, CA 94089-9820 408-542-0500 FAX 408-542-0503 http://www.sandisk.com

Sales Offices

Western Region USA

408-542-0730 FAX 408-542-0403

Eastern Region USA & Canada

603-882-0888 FAX 603-882-2201

Central & Southern Region USA

614-760-3700 FAX 614-760-3701

Latin & South America

407-667-4880 FAX 407-667-4834

Europe

SanDisk GmbH

Karlsruher Str. 2C D-30519 Hannover, Germany 49-511-8759185 FAX 49-511-8759187

SanDisk Northern Europe

Videroegaten 3 B S-16440 Kista Sweden 46-(0)8-75084-63 FAX 46-(0)8-75084-26

SanDisk Central Europe

Rudolf-Diesel-Str. 3 40822 Mettmann Germany 49-(0)2104-953433 FAX 49-(0)2104-953434

Japan

SanDisk K.K.

8F Nisso Bldg. 15 2-17-19 Shin-Yokohama, Kohoku-ku Yokohama 222-0033, Japan 81-45-474-0181 FAX 81-45-474-0371

Asia/Pacific Rim

89 Queensway, Lippo Center Tower II, Suite 4104 Admiralty, Hong Kong 852-2712-0501 FAX 852-2712-9385

To order SanDisk products directly from SanDisk, call 408-542-0595.

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Limited Warranty

I. WARRANTY STATEMENT

SanDisk warrants its products to be free of any defects in materials or workmanship that would prevent them from functioning properly for one year from the date of purchase. This express warranty is extended by SanDisk Corporation.

II. GENERAL PROVISIONS

This warranty sets forth the full extent of SanDisk’s responsibilities regarding the SanDisk SmartMedia Card. In satisfaction of its obligations hereunder, SanDisk, at its sole option, will either repair, replace or refund the purchase price of the product.

NOTWITHSTANDING ANYTHING ELSE IN THIS LIMITED WARRANTY OR OTHERWISE, THE EXPRESS WARRANTIES AND OBLIGATIONS OF SELLER AS SET FORTH IN THIS LIMITED WARRANTY, ARE IN LIEU OF, AND BUYER EXPRESSLY WAIVES ALL OTHER OBLIGATIONS, GUARANTIES AND WARRANTIES OF ANY KIND, WHETHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR INFRINGEMENT, TOGETHER WITH ANY LIABILITY OF SELLER UNDER ANY CONTRACT, NEGLIGENCE, STRICT LIABILITY OR OTHER LEGAL OR EQUITABLE THEORY FOR LOSS OF USE, REVENUE, OR PROFIT OR OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION PHYSICAL INJURY OR DEATH, PROPERTY DAMAGE, LOST DATA, OR COSTS OF PROCUREMENT OF SUBSTITUTE GOODS, TECHNOLOGY OR SERVICES. IN NO EVENT SHALL THE SELLER BE LIABLE FOR DAMAGES IN EXCESS OF THE PURCHASE PRICE OF THE PRODUCT, ARISING OUT OF THE USE OR INABILITY TO USE SUCH PRODUCT, TO THE FULL EXTENT SUCH MAY BE DISCLAIMED BY LAW.

SanDisk’s products are not warranted to operate without failure. Accordingly, in any use of products in life support systems or other applications where failure could cause injury or loss of life, the products should only be incorporated in systems designed with appropriate redundancy, fault tolerant or back-up features.

III. WHAT THIS WARRANTY COVERS

For products found to be defective within one year of purchase, SanDisk will have the option of repairing or replacing the defective product, if the following conditions are met:

A. The defective product is returned to SanDisk for failure analysis as soon as possible after the failure occurs.

B. An incident card filled out by the user, explaining the conditions of usage and the nature of the failure,

accompanies each returned defective product.

C. No evidence is found of abuse or operation of products not in accordance with the published specifications,

or of exceeding storage or maximum ratings or operating conditions.

All failing products returned to SanDisk under the provisions of this limited warranty shall be tested to the product’s functional and performance specifications. Upon confirmation of failure, each product will be analyzed, by whatever means necessary, to determine the root cause of failure. If the root cause of failure is found to be not covered by the above provisions, then the product will be returned to the customer with a report indicating why the failure was not covered under the warranty.

This warranty does not cover defects, malfunctions, performance failures or damages to the unit resulting from use in other than its normal and customary manner, misuse, accident or neglect; or improper alterations or repairs.

SanDisk reserves the right to repair or replace, at its discretion, any product returned by its customers, even if such product is not covered under warranty, but is under no obligation to do so.

SanDisk may, at its discretion, ship repaired or rebuilt products identified in the same way as new products, provided such cards meet or exceed the same published specifications as new products. Concurrently, SanDisk also reserves the right to market any products, whether new, repaired, or rebuilt, under different specifications and product designations if such products do not meet the original product’s specifications.

Limited Warranty

IV. RECEIVING WARRANTY SERVICE

According to SanDisk’s warranty procedure, defective product should be returned only with prior authorization from SanDisk Corporation. Please contact SanDisk’s Customer Service department at 408-542-0595 with the following information: product model number and description, nature of defect, conditions of use, proof of purchase and purchase date. If approved, SanDisk will issue a Return Material Authorization or Product Repair Authorization number. Ship the defective product to:

SanDisk Corporation Attn: RMA Returns (Reference RMA or PRA #) 140 Caspian Court Sunnyvale, CA 94089

V. STATE LAW RIGHTS

SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, OR LIMITATION ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATIONS OR EXCLUSIONS MAY NOT APPLY TO YOU. This warranty gives you specific rights and you may also have other rights that vary from state to state.

sandisk SDSM-32-101-01 User guide

Specifications and Main Features

Frequently Asked Questions

User Manual