W551Cxxx Data Sheet

Winbond Electronics Corp.

Release Date: January 2, 2001

Contents

General Description

1.1 W551Cxxx Product Selection Guide ...................................................................................2

Features 3

2.1 W551Cxxx Features Description .........................................................................................3

2.2 W551Cxxx Pin Configuration & Description ......................................................................4

2.3 W551Cxxx System Block Diagram .....................................................................................5

Function Description

3.1 W551Cxxx Functional Description......................................................................................6

3.2 W551Cxxx Normal Read Mode...........................................................................................7

3.3 W551Cxxx Self-test Mode...................................................................................................8

Electrical Characteristics

4.1 W551Cxxx Absolute Maximum Ratings .............................................................................9

4.2 W551Cxxx DC Characteristics ............................................................................................9

4.3 W551Cxxx AC Characteristics ..........................................................................................10

Timing Waveform

5.1 W551Cxxx Timing Waveform...........................................................................................11

Applications 12

6.1 W551Cxxx Applications ....................................................................................................12

6.2 W551Cxxx Application Circuits ........................................................................................13

W551Cxxx Data Sheet

Winbond Electronics Corp.

Release Date: January 2, 2001

General Description

The W551Cxxx series is designated to interface with Winbond PowerSpeech

, BandDirector

, and

ViewTalk

family ICs directly. Application with PowerSpeech

, BandDirector

, and ViewTalk

the serial voice

memory W551Cxxx can lengthen the playback duration to meet the increasing market demand on complicated scenarios.
The W551Cxxx was already utilized the same serial interface as Winbond serial flash memory W55Fxx for designer to
simulate & verify the memory contents in advance. Besides that, W551Cxxx also provides a "Self-test mode" to verify
the voice memory contents easily and quickly.

1.1 W551Cxxx Product Selection Guide

W551Cxxx Serial Voice Memory is used to store pre-determined data. To communicate with W551Cxxx in

serial data mode, the connection interface total pin counts can be reduced to three pins only. The following table is
shown the product selection guide of part number vs. memory density.

Part

W551C002 W551C005 W551C010 W551C020 W551C040 W551C060 W551C080

Density

256K bits

512K bits

1M bits

2M bits

4M bits

6M bits

8M bits

W551Cxxx Data Sheet

Winbond Electronics Corp.

Release Date: January 2, 2001

Features

2.1 W551Cxxx Features Description

Wide range of operating voltage: 2.4V ~ 5.5V

Operating frequency up to 1 MHz (@VDD = 2.4V)

Versatile operation modes
#"Serial read mode
#"Serial check-sum output mode
#"Fast self-test mode

Directly cascade for longer duration applications

Serial shift-in address bus

Serial data mode, the connection interface can be reduced to three pins:
#"CLK, ADDR, DATA

Read access time: 500 ns

Low power consumption
#"Operation current: 5 mA (typ.)
#"Standby current: 2 uA (typ.)

W551Cxxx Data Sheet

Winbond Electronics Corp.

Release Date: January 2, 2001

2.2 W551Cxxx Pin Configuration & Description

Pin Configuration

Pin Description

Pin Name

I/O

Description

TEST

Internal pulled high. Set TEST to low will enable "Self-test" function.

TEST_OUT

The output pin indicates the result of self-test process.
For correct result, a logic " 0 " signal will be output.
For incorrect result, a logic " 1 " signal will be output.
At Power-On-Reset condition, it outputs a logic " 1 " signal.

ADDR

Clock input for shift-in start address;
The first rising-edge signal will reset the address counter.

DATA

Bi-directional data pin with the internal pull-high.

CLK

Clock input for data read-out.

VDD

Power Positive power supply pin.

VSS

Ground

TEST_OUT

VSS

ADDR

TEST

VDD

CLK

DATA

1
2

4 5

W551Cxxx Data Sheet

Winbond Electronics Corp.

Release Date: January 2, 2001

Function Description

3.1 W551Cxxx Functional Description

The maximum number of the ADDR clock is 24 bits. The address data is shifted into the 24 bits address counter

by the ADDR clock. The MSB x bits of the address counter are the page codes, and the rest (24 - x) bits are the bit
of address. Note that the MSB is shifted first. The MSB 5 bits of the address counter are always gating (exclusive
OR) with the content of the page-code cells to determine whether these two articles are match or not. Only when the
page codes are matched with the content of the page-code cells, this device can be enabled. The counting source of
the address counter is the CLK clock, the falling edge signal of the CLK clock up-count the counter.

In normal-read mode the ADDR and CLK clock cannot be active simultaneously. The first rising edge signal of

the ADDR clock after CLK clocking will reset the address shift registers. The following table describes the needed
bits of

page code

Part

# W551C002 W551C005 W551C010 W551C020 W551C040 W551C060 W551C080

Density

256K bits

512K bits

1M bits

2M bits

4M bits

6M bits

8M bits

Bits of

page code

6 5 4 3 2 2 1

W551Cxxx Data Sheet

Winbond Electronics Corp.

Release Date: January 2, 2001

3.2 W551Cxxx Normal Read Mode

This chip can also be connected with Winbond PowerSpeech

, BandDirector

, and ViewTalk

series

directly. Because in power-on condition, the default function mode is the normal read mode, then the mode selected
procedure can be skipped.

ADDR

DATA

CLK

TEST

� � �

24 bits

W551Cxxx Data Sheet

Winbond Electronics Corp.

Release Date: January 2, 2001

3.3 W551Cxxx Self-test Mode

In normal read mode, the TEST pin is internally pulled high, and the TEST_OUT pin is in logic ' 1 ' state.

When the TEST pin is pulled low, the W551Cxxx enters the "self-test mode". In this mode, the self-test process is
started at the falling edge of the TEST signal. The self-test process accumulates each byte (8 bit) of voice memory
content from address 00000h to 7FFFFh. If the accumulated result is 00h, a logic ' 0 ' will be output from
TEST_OUT pin. Or else, a logic ' 1 ' signal will be output from TEST_OUT pin.

TEST

TEST
_OUT

TEST
_OUT

TEST

For "Correct" result

For "Incorrect" result

End of test

W551Cxxx Data Sheet

Winbond Electronics Corp.

Release Date: January 2, 2001

Electrical Characteristics

4.1 W551Cxxx Absolute Maximum Ratings

PARAMETER SYMBOL

CONDITION

RATING UNIT

Operation Temperature

OPR

0 to +70

�

Storage Temperature

STG

-65 to +150

�

Power Supply (VDD-VSS)

-V

-0.3 to +7.0

Input D.C. Voltage

All pins

-0.5 to Vcc+1.0

Transient Voltage (<20ns)

TRAN

All pins

-1.0 to Vcc+1.0

4.2 W551Cxxx DC Characteristics

= 4.5V, TA = 25

�

LIMITS

PARAMETER SYMBOL

TEST

CONDITIONS

MIN. TYP. MAX.

UNIT

Operating Voltage

2.4

(Note)

4.5 5.5 V

Operating Current

In normal read mode, DATA,
TEST & TEST_OUT pins open;
f=1MHz

- 5 10

W551Cxxx Data Sheet

Winbond Electronics Corp.

Release Date: January 2, 2001

Standby Current

All inputs = GND;
DATA, TEST & TEST_OUT
pins open

- 1 2

Input Leakage Current for
DATA

LI1

= 0 V

-4.5

Input Leakage Current for
TEST

LI2

= 4.5 V

22.5

Input Low Voltage

All input pins

-0.3

0.8

Input High Voltage

All input pins

2.0

VDD

Output Sink Current

= 0.5V

2.5

Output Drive Current

= 4.0V

-2.5

-5

ESD capability

ESD

- 2

4.3 W551Cxxx AC Characteristics

VDD = 4.5V TA = 25

�

PARAMETER SYMBOL

CONDITION

MIN.

TYP.

MAX.

UNIT

Clock frequency of ADDR

ADDR

MHz

Clock frequency of CLK

1 MHz

Interval time between ADDR and CLK

Read

mode

1 - - uS

Interval between DATA to another pin active

CFA

10 - - uS

Data access time

Read

mode

- 500 nS

Data setup time

Address

shift-in

250 -

Read

mode

Data hold time

Address

shift-in

10 - - nS

Self-test time

TEST

Self-test

mode

500

W551Cxxx Data Sheet

Winbond Electronics Corp.

Release Date: January 2, 2001

6.2 W551Cxxx Application Circuits

Application Circuits

(for reference only)

! With PowerSpeech

, BandDirector

, ViewTalk

Applications

ADDR

DATA

CLK

W551Cxxx

ADDR

DATA

CLK

W58300/
W56000/
W536xxx

ADDR

DATA

CLK

! For Cascading Applications

W58300/
W56000/
W536xxx

ADDR

DATA

CLK

W551Cxxx

ADDR

DATA

CLK

W551Cxxx

ADDR

DATA

CLK

W551Cxxx

W551Cxxx Data Sheet

Winbond Electronics Corp.

Release Date: January 2, 2001

Headquarters

No. 4, Creation Rd. III,
Science-Based Industrial Park,
Hsinchu, Taiwan
TEL: 886-3-5770066
FAX: 886-3-5792697
http://www.winbond.com.tw/
Voice & Fax-on-demand: 886-2-27197006

Taipei Office

11F, No. 115, Sec. 3, Min-Sheng East Rd.,
Taipei, Taiwan
TEL: 886-2-27190505
FAX: 886-2-27197502

Winbond Electronics (H.K.) Ltd.

Rm. 803, World Trade Square, Tower II,
123 Hoi Bun Rd., Kwun Tong,
Kowloon, Hong Kong
TEL: 852-27513100
FAX: 852-27552064

Winbond Electronics North America Corp.
Winbond Memory Lab.
Winbond Microelectronics Corp.
Winbond Systems Lab.

2727 N. First Street, San Jose,
CA 95134, U.S.A.
TEL: 408-9436666
FAX: 408-5441798

Note: All data and specifications are subject to change without notice.

Электронный компонент: W551C040