ISD1612BPYI - Nuvoton Technology Corporation of America

PRELIMINARY

Publication Release Date: Dec. 01, 2008

Revision 1.22

ISD1600B

Series

Single-Message

Single-Chip

6.6- to 40-Second

Voice Record & Playback Devices

ISD1600B SERIES

Publication Release Date: Dec. 01, 2008

- 2 - Revision 1.22

TABLE OF CONTENTS

1. GENERAL DESCRIPTION .................................................................................................................. 3

2. FEATURES ......................................................................................................................................... 4

3. BLOCK DIAGRAM ............................................................................................................................... 5

4. PIN CONFIGURATION ....................................................................................................................... 6

5. PIN DESCRIPTION ............................................................................................................................. 7

6. FUNCTIONAL DESCRIPTION ............................................................................................................ 9

6.1. Detailed Description ...................................................................................................................... 9

6.1.1 Audio Quality ........................................................................................................................... 9

6.1.2 Duration ................................................................................................................................... 9

6.1.3 Flash Storage .......................................................................................................................... 9

6.1.4 Basic Operation ....................................................................................................................... 9

6.1.5 Automatic Power-Down Mode ................................................................................................ 9

6.2. Functional Description Example ................................................................................................... 9

6.2.1. Record a Message ............................................................................................................... 10

6.2.2. Edge-trigger Playback .......................................................................................................... 10

6.2.3. Level- trigger Playback ......................................................................................................... 10

6.2.4. LED Operation ..................................................................................................................... 10

6.2.5. ROSC Operation ..................................................................................................................... 10

7. TIMING DIAGRAMS .......................................................................................................................... 11

8. ABSOLUTE MAXIMUM RATINGS .................................................................................................... 13

8.1 Operating Conditions ................................................................................................................... 14

9. ELECTRICAL CHARACTERISTICS ................................................................................................. 15

9.1. DC Parameters ........................................................................................................................... 15

9.2. AC Parameters ........................................................................................................................... 16

10. TYPICAL APPLICATION CIRCUIT ................................................................................................. 17

11. PACKAGE DRAWING AND DIMENSIONS .................................................................................... 18

11.1. 16-Lead 150mil Small Outline Integrated Circuit (SOIC) Package .......................................... 18

11.2. Die Physical Layout .................................................................................................................. 19

12. ORDERING INFORMATION ........................................................................................................... 20

13. VERSION HISTORY ....................................................................................................................... 21

ISD1600B SERIES

Publication Release Date: Dec. 01, 2008

- 3 - Revision 1.22

1. GENERAL DESCRIPTION

The Nuvoton® ISD1600B ChipCorder® Series is a high quality, fully integrated, single-chip single-

message voice record and playback device ideally suited to a variety of electronic systems. The

message duration is user selectable in ranges from 6.6 seconds to 40 seconds, depending on the

specific device. The sampling frequency of each device can also be adjusted from 4 kHz to 12 kHz

with an external resistor, giving the user greater flexibility in duration versus recording quality for each

application. Operating voltage spans a range from 2.4 V to 5.5 V to ensure that the ISD1600B devices

are optimized for a wide range of battery or line-powered applications.

The devices include an on-chip oscillator (with external resistor control), microphone preamplifier with

Automatic Gain Control (AGC), anti-aliasing filter, Multi-Level Storage (MLS) array, smoothing filter,

Pulse Width Modulation (PWM) Class D speaker driver, and current output. Voice signals can be fed

into the chip through a differential microphone input for recording. The PWM output can directly drive

a standard 8 Ω speaker or a typical buzzer, while the separate single-ended current output can drive

an external amplifier.

Recordings are stored into the on-chip Flash memory cells, providing zero-power message storage.

This unique single-chip solution is made possible through Nuvoton’s patented Multi-Level Storage

(MLS) technology. Audio data are stored directly in solid-state memory without digital compression,

providing superior quality voice and music reproduction.

ISD1600B SERIES

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2. FEATURES

• User-friendly single-chip, single-message voice record & playback devices

• Wide operating voltage: 2.4V to 5.5V

• Push-button interface

o Record is level-triggered

o Playback is either edge- or level-triggered

• Selectable sampling frequency controlled by an external oscillator resistor

Sampling Frequency 12 kHz 8 kHz 6.4 kHz 5.3 kHz 4 kHz

Rosc 53 kΩ 80 kΩ 100 kΩ 120 kΩ 160 kΩ

• Variable duration selected by external oscillator resistor

Sample Frequency 12 KHz 8 KHz 6.4 KHz 5.3 KHz 4 HKz

ISD1610B 6.6 secs 10 secs 12.5 secs 15 secs 20 secs

ISD1612B 8 secs 12 secs 15 secs 18 secs 24 secs

ISD1616B 10.6 secs 16 secs 20 secs 24 secs 32 secs

ISD1620B 13.3 secs 20 secs 25 secs 30 secs 40 secs

• Message and operation indicators

o LED: stay on during recording, blink during playback operation

• Automatic power-down mode

o Enters standby mode immediately after a record or playback cycle

o Standby current: 1µA typical and 10µA maximum

• Dual output channels

o PWM Class D speaker amplifier to directly drive an 8  speaker or a typical buzzer

o AUD single-ended current output to drive external power amplifier

• ChipCorder standard features

o High-quality, natural voice and audio reproduction

o Zero-power message storage: Eliminates battery backup circuits

o 100-year message retention (typical)

o 100,000 record cycles (typical)

• Package options: Leaded and Lead-free packaged units

• Available in die and 16L 150mil SOIC

• Temperature options:

o Commercial: 0°C to +50°C (Die); 0°C to +70°C (Packaged)

o Industrial: -40°C to +85°C (Packaged)

ISD1600B SERIES

Publication Release Date: Dec. 01, 2008

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3. BLOCK DIAGRAM

Internal

Clock Timing

Nonvolatile

Multilev el Storage

Array

Analog Transceivers

Decoders

Device Control

Power Conditioning

Automatic

Gain Control

(AGC)

Active

Antialiasing Filter

Active

Smoothing Filter Amp

AGC

Amp

Sampl i ng Cl oc k

SP+

SP-

AGC

MIC-

MIC+

ROSC

LEDPLAYL

PLAYEREC

VCCA VSSA

AUD

Amp

VCCP VSSD VCCD

VSSP

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SOIC

4. PIN CONFIGURATION

VSSD

REC

PLAYE

PLAYL

VSSA AGC

VCCD

ROSC

Sp+

VCCA

LED

MIC-

MIC+

I1600

VSSAD

SP-

AUD

ISD1600B SERIES

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5. PIN DESCRIPTION

PIN NAME SOIC / PDIP FUNCTIONS

PIN NO.

VSSD 1

Digital Ground: VSSD is the ground for digital circuits. It is

important to have a separate path for each ground back to

the system ground terminal to minimize noise.

2 Record: The device starts recording whenever REC REC

transits from High to Low and stays at Low. Recording stops

when the signal returns to High. This pin has an internal

pull-up resistor [1] and an internal debounce on falling edge.

3 Edge-trigger Playback: A playback operation starts when

this input detects a low going signal exceeding the specified

debounced time. This pin has an internal pull-up resistor [1]

and an internal debounce on both falling & rising edge.

PLAYE

PLAYL 4 Level-trigger Playback: A playback operation begins when

this input detects a low going signal and remains at Low.

Playback stops when the signal returns to High. This pin has

an internal pull-up resistor [1] and an internal debounce on

falling edge.

VSSA 5

Analog Ground: VSSA is the ground for analog circuits. It is

important to have a separate path for each ground back to

the system ground terminal to minimize noise.

MIC+ 6

Microphone Positive Input: The input transfers the signal

to the preamplifier. The internal Automatic Gain Control

(AGC) circuit controls the gain of the preamplifier. An

external microphone should be AC coupled to this pin via a

series capacitor. The capacitor value, together with an

internal 10 K resistance on this pin, determines the low-

frequency cutoff for the ISD1600B passband.

MIC- 7

Microphone Negative Input: This is the inverting input to

the microphone preamplifier. It provides input noise-

cancellation, or common-mode rejection, when the

microphone is connected differentially to the device.

SP- 8

Speaker Negative : The SP-, Class D PWM output,

provides a differential output with SP+ pin to drive 8

speaker or buzzer. During power down or recording, this pin

is tri-stated.

VSSP 9

PWM Ground: VSSP is the ground for PWM speaker driver.

It is important to have a separate path for each ground back

to the system ground terminal to minimize noise.

ISD1600B SERIES

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PIN NAME SOIC / PDIP FUNCTIONS

PIN NO.

VCCA 10

Analog power supply: It is important to have a separate

path for each power back to the power terminal to minimize

the noises. Decoupling capacitors to VSSA should be as

close to the device as possible.

VCCP 10

VCCP: Power supply for PWM speaker drivers. It is important

to have a separate path for each power back to the power

terminal to minimize noise. Decoupling capacitors to VSSP

should be as close to the device as possible.

SP+ 11

Speaker Positive : The SP+, Class D PWM output, provide

a differential output with SP- pin to drive an 8 speaker or

buzzer directly. During power down or recording, this pin is

tri-stated.

AGC 12

Automatic Gain Control: The AGC dynamically adjusts the

gain of the preamplifier to compensate the wide range of

microphone input levels. The AGC allows the full range of

signal to be recorded with minimal distortion. Nominal

values of 4.7 µF give satisfactory results in most cases.

Connecting this pin to ground provides maximum gain to the

preamplifier circuitry. Conversely, connecting this pin to

power supply provides minimum gain to the preamplifier

circuitry.

AUD 13

AUD: The AUD provides a single-ended current output to

drive an external amplifier. During standby or recording, this

pin is tri-stated.

ROSC 14

Oscillator Resistor: This enables the user to vary the

record and/or playback duration of the device. A resistor

connected between the ROSC pin and VSSA determines the

sample frequency for the ISD1600B device. Please refer to

the Duration Section in Section 6.1.

VCCD 15

Digital power supply: It is important to have a separate

path for each power back to the power terminal to minimize

noise. Decoupling capacitors should be as close to the

device as possible.

16 LED output: This pin is Low during a record cycle and

blinks during playback cycle. It can be used to drive an LED

to indicate either a record or playback cycle is in progress.

LED

Note:

[1] 600kΩ (typical).

ISD1600B SERIES

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6. FUNCTIONAL DESCRIPTION

6.1. DETAILED DESCRIPTION

6.1.1 Audio Quality

Nuvoton’s patented ChipCorder® MLS technology provides natural high quality record and

playback solution on a single chip. The input audio signals are stored directly into the non-

volatile memory and are reproduced in its natural form without any compression artifacts

caused by the digital speech solutions. A complete sample is stored in a single cell,

minimizing the memory needed to store a single message.

6.1.2 Duration

The ISD1600B series offer single-chip solution with record & playback duration from 6.6

seconds to 40 seconds. Sampling frequency and duration are determined by an external

resistor connected to the Rosc pin.

Sampling Frequency Rosc ISD1610B ISD1612B ISD1616B ISD1620B

12 KHz 53 kΩ 6.6 secs 8 secs 10.6 secs 13.3 secs

8 KHz 80 kΩ 10 secs 12 secs 16 secs 20 secs

6.4 KHz 100 kΩ 12.5 secs 15 secs 20 secs 25 secs

5.3 KHz 120 kΩ 15 secs 18 secs 24 secs 30 secs

4 KHz 160 kΩ 20 secs 24 secs 32 secs 40 secs

6.1.3 Flash Storage

The ISD1600B product utilizes the on-chip Flash memory providing zero-power message

storage. The message is retained for up to 100 years without power. In addition, the device

can be re-recorded typically over 100,000 times.

6.1.4 Basic Operation

The ISD1600B ChipCorder® device is controlled by either the REC , or one of the two

playback modes, PLAYE and PLAYL . The ISD1600B parts are configured for simple design

in single-message application. Detailed operations are explained in Section 6.2.

6.1.5 Automatic Power-Down Mode

At the end of a playback or record cycle, the ISD1600B device automatically enters into a low-

power mode, consuming typically 1µA, provided that PLAYE , PLAYL and REC are High

(see DC parameters Section). During a playback cycle, the device powers down automatically

at the end of the message. During a record cycle, the device powers down immediately after

REC is released to High.

6.2. FUNCTIONAL DESCRIPTION EXAMPLE

The following example operating sequences demonstrate the functionality of the ISD1600B series.

ISD1600B SERIES

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6.2.1. Record a Message

The device starts recording from the beginning of the memory when REC transits from High

to Low and stays at Low. A record cycle is completed when REC is pulled to High or entire

memory is filled up. Then an End-of-Message (EOM) marker is written at the end of message,

enabling a subsequent playback cycle to terminate appropriately. Hence, the device

automatically enters into standby mode.

Record takes precedence over playback operation. If REC is pulled Low during a playback

cycle, the playback immediately halts and recording starts from the beginning of the memory.

Holding REC Low after recording will increase standby current consumption.

6.2.2. Edge-trigger Playback

A playback operation starts from the beginning of the memory when PLAYE detects a low

going signal exceeding the specified debounced time. Playback continues until an EOM

marker is encountered. Upon completion of a playback cycle, the device automatically enters

into standby mode.

During playback, a subsequent low going signal will terminate the current playback operation.

Holding this pin Low after playback operation will increase standby current consumption.

6.2.3. Level- trigger Play back

PLAYLWhen switches from High to Low and stays at Low, a playback starts from the

beginning of the memory until either an EOM marker is reached, then it automatically powers

down.

PLAYLIf is pulled High at any time during playback, the playback operation stops

immediately and the device enters into the power-down mode.

6.2.4. LED Operation

The LED is Low during recording, which turns on an LED as a recording indicator. However,

during playback, the LED blinks a few times per second to indicate a playback operation. It

returns to a High when operation stops.

6.2.5. ROSC Operation

The duration can be varied by changing the value of ROSC. This means the designer has the

flexibility to choose different sampling frequency, up to 12 KHz, depending upon the needs.

This feature allows frequency shifting where a recorded audio can be played back faster or

slower than normal for special sound effects.

Another feature is a “Pause” function that can be activated by taking the ROSC resistor to VCC to

stop playback momentarily, and to resume when the resistor is switched back to ground.

ISD1600B SERIES

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Rec

7. TIMING DIAGRAMS

TfTr

TRS

LED

Mic+

TDb1

Mic-

FIGURE 1: RECORD OPERATION

ISD1600B SERIES

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Sp+

Even # pulses stops playback

Sp-

TRU

TPS1 or TPS2

LED

PlayL

TDb2

Odd # pulses starts playback

Tcyc Tr

TDb1

PlayE

TDb1

Aud

TRU TPS1 or TPS2

Slowly returns to analog ground

to eliminate the "pop" at the end

Ramps up gradually to analog ground

to eliminate the "pop" at the beginning

FIGURE 2: PLAYBACK OPERATION

ISD1600B SERIES

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8. ABSOLUTE MAXIMUM RATINGS

ABSOLUTE MAXIMUM RATINGS (DIE)

CONDITIONS [1] VALUES

Junction temperature 150°C

Storage temperature range -65°C to +150°C

Voltage applied to all pins (VSS –0.3V) to (VDD +0.3V)

Power supply voltage to ground potential -0.3V to +7.0V

ABSOLUTE MAXIMUM RATINGS (PACKAGED PARTS)

CONDITIONS [1] VALUES

Junction temperature 150°C

Storage temperature range -65°C to +150°C

Voltage applied to all pins (VSS –0.3V) to (VDD +0.3V)

Lead temperature (Soldering – 10 sec) 300°C

Power supply voltage to ground potential -0.3V to +7.0V

[1] Stresses above those listed may cause permanent damage to the device. Exposure to the

absolute maximum ratings may affect device reliability and performance. Functional operation is

not implied at these conditions.

ISD1600B SERIES

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8.1 OPERATING CONDITIONS

OPERATING CONDITIONS (DIE)

CONDITIONS VALUES

Operating temperature range 0°C to +50°C

Supply voltage (VDD) [1] +2.4V to +5.5V

Ground voltage (VSS) [2] 0V

Input voltage (VDD) [1] 0V to 5.5V

Voltage applied to any pins (VSS –0.3V) to (VDD +0.3V)

OPERATING CONDITIONS (PACKAGED PARTS)

CONDITIONS VALUES

Operating temperature range (Case temperature) -40°C to +85°C

Supply voltage (VDD) [1] +2.4V to +5.5V

Ground voltage (VSS) [2] 0V

Input voltage (VDD) [1] 0V to 5.5V

Voltage applied to any pins (VSS –0.3V) to (VDD +0.3V)

[1] VDD = VCCA = VCCD = VCCP

[2] VSS = VSSA = VSSD = VSSP

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9. ELECTRICAL CHARACTERISTICS

9.1. DC PARAMETERS

PARAMETER SYMBOL MIN TYP [1] MAX UNITS CONDITIONS

Supply Voltage VDD 2.4 5.5 V

Input Low Voltage VIL V

SS-0.3 0.3xVDD V

Input High Voltage VIH 0.7xVDD V

DD V

Output Low Voltage VOL V

SS-0.3 0.3xVDD V IOL = 4.0 mA[2]

Output High Voltage VOH 0.7xVDD V

DD V IOH = -1.6 mA[2]

Record Current IDD_Record 20 mA

VDD = 5.5V, No load,

Sampling freq = 12 kHz

Playback Current IDD_Playback 20 mA

Standby Current ISB 1 10 µA

[3] [4]

Input Leakage Current IILPD1

±1 µA Force VDD

[5]

Input Current HIGH IILPD2 -3 -10 µA Force VSS

[5]

Preamp Input Resistance RMIC+,RMIC- 20 K Across both pins

MIC Input Voltage VIN 15 300 mV Peak-to-Peak[6]

Gain from MIC to SP+/- AMSP 6 40 dB VIN = 15 to 300mV,

AGC = 4.7µF,

VDD = 2.4V to 5.5V

Output Load Impedance REXT 8  Speaker Load

Speaker Output Power Pout 670 mW VDD = 5.5V 15mVp-p

1kHz freq

sinewave,

REXT = 8;

313 mW

VDD = 4.4V

117 mW

VDD= 3V

49 mW

VDD= 2.4V

Speaker Output Voltage Vout VDD V

REXT = 8 (Speaker),

typical buzzer

AUD IAUD -3.0 mA VDD =4.5V, REXT= 390

Total Harmonic Distortion THD 1 % 15mV p-p 1KHz sinewave,

Cmessage weighted

Notes: [1]

Conditions: VCC = 4.5V, 8kHz sampling frequency and TA = 25°C, unless otherwise stated.

[2] LED output during Record operation.

[3] V

CCA, VCCD and VCCP are connected together. VSSA, VSSP and VSSD are connected together.

[4] REC , PLAYE and PLAYL must be at VCCD.

[5] REC , PLAYE and PLAYL are forced to specified condition.

[6] Balanced input signal applied between MIC and MIC REF as shown in the applications example. Single-

ended MIC or MIC REF recommended to be less than 100 mV peak to peak.

ISD1600B SERIES

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9.2. AC PARAMETERS

CHA RACTERISTIC SYMBOL MIN TYP [1] MAX UNITS CONDITIONS

Sampling Frequency [2] F

S 4 12 KHz Vcc=2.4V~5.5V

Duration [3] Dur

I1610B I1612B I1616B I1620B

6.6 8 10.6 13.3 Sec SF=12kHz Vcc=2.4

V~5.5V

10 12 16 20 Sec SF=8kHz

12.5 15 20 25 Sec SF=6.4kHz

15 18 24 30 Sec SF=5.3kHz

20 24 32 40 Sec SF=4kHz

Rising time Tr 0 100 nsec

Falling Time Tf 0 100 nsec

Debounce Time

(Record & PlayL)

TDb1 26.6 26.6 26.6 26.6 msec SF=12kHz Vcc=2.4

V~5.5V

40 40 40 40 msec SF=8kHz

50 50 50 50 msec SF=6.4kHz

60.4 60.4 60.4 60.4 msec SF=5.3kHz

80 80 80 80 msec SF=4kHz

Debounce Time (PlayE) TDb2 13.3 13.3 13.3 13.3 msec SF=12kHz Vcc=2.4

V~5.5V

20 20 20 20 msec SF=8kHz

25 25 25 25 msec SF=6.4kHz

30.2 30.2 30.2 30.2 msec SF=5.3kHz

40 40 40 40 msec SF=4kHz

Signal Ramp Up Time TRU 100 msec Vcc=2.4V~5.5V

Record Stop Time TRS 2 Sample Clock Vcc=2.4V~5.5V

PlayL Stop Time TPS1 T

Db1 msec Vcc=2.4V~5.5V

PlayE Stop Time TPS2 2 X TDb1 msec Vcc=2.4V~5.5V

LED Cycle frequency TCyc 1 6 Hz Playback at any SF

Notes:

[1] Typical values : VCC = 4.5V, sampling frequency (SF) = 8 kHz and @ TA = 25°C, unless otherwise stated.

[2] Sampling Frequency can vary as much as ±2.25 percent over the commercial temperature and voltage

ranges, and –6/+4 percent over the industrial temperature and voltage ranges.

[6] Duration can vary as much as ±2.25 percent over the commercial temperature and voltage ranges, and –

6/+4 percent over the industrial temperature and voltage ranges.

ISD1600B SERIES

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10. TYPICAL APPLICATION CIRCUIT

The below example illustrates a typical applications of ISD1600B device.

ISD1600B

AUD

MIC+

MIC -

AGC

Vcc Gnd

ROSC

R4**

R7*

VCCD

REC

PLAYE

PLAYL

LED

VCCA

4.7 F

4.7 K

0.1 F

4.7 KΩ

0.1 F

4.7 KΩ

4.7 F

SP+

SP-

Speaker

or Buzzer

Electret

Microphone

VCCD

VCCA

VSSD

VSSA

VSSP

C10*

C9*

0.1 F

C11*

0.1 F

VCCP

390Ω0.1 F

VCC

805

Speaker

LED

1 K Ω

VCCA

VCCD

VCCP

***

12 8

Optional: based upon the

applications

Schematic shows both speaker and AUD outputs

Notes:

* These components may be needed in order to optimize for the best voice quality and system performance,

which is also dependent upon the layout of the PCB. Pending upon system requirement, Cx can be 10 μF, 4.7

μF or other values. For R7, 1kΩ gives satisfactory result fro most cases.

** For Sampling Freq at 8 kHz, R4 = 80 KΩ

*** It is important to have a separate path for each ground and power back to related terminal to minimize the

noise. Also, the power supplies should be decoupled as close to the device as possible.

Good Audio Design Practices

Nuvoton’s ChipCorder are very high-quality single-chip voice recording and playback devices. To

ensure the highest quality voice reproduction, it is important that good audio design practices on

layout and power supply decoupling are followed. See Application Information links below for details.

Design considerations for ISD1600B Series

http://www.nuvoton-usa.com/products/isd_products/chipcorder/applicationbriefs/AN-CC1001.pdf

Good Audio Design Practices

http://www.nuvoton-usa.com/products/isd_products/chipcorder/applicationinfo/apin11.pdf

Single-Chip Board Layout Diagrams

http://www.nuvoton-usa.com/products/isd_products/chipcorder/applicationinfo/apin12.pdf

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11. PACKAGE DRAWING AND DIMENSIONS

11.1. 16-Lead 150mil Small Outline Integrated Circuit (SOIC) Package

ISD1600B SERIES

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11.2. Die Physical Layout

ISD1610B / 1612B / 1616B / 1620B

VSSA

MIC+

MIC-

SP-

SP+

VSSP

VCCA

VCCP

AGC

AUD

PLAYL

VCCD

ROSC

VSSD

LED

PLAYE

REC

VCCP

Notes:

1. The backside of die is internally connected to VSSA. It MUST NOT be connected to any other potential or damage may occur.

2. For package, VCCA and VCCP pads are bonded together to one pin.

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12. ORDERING INFORMATION

Product Number Descriptor Key

ISD16xxxxxx

Product Series:

ISD1600 Series

Duration:

10B : 6.6 – 20 secs

12B : 8 – 24 secs

16B : 10.6 – 30 secs

20B : 13.3 – 40 secs

Package Type:

X = Die

S = Small Outline Integrated Circuit (SOIC) Package

Temperature:

I = Industrial (-40°C to +85°C)

Blank = Commerical

• Die (0°C to +50°C)

• Package (0°C to +70°C)

Package Option:

Y = Lead-free

Blank = Leaded

When ordering, please refer to the following valid part numbers that are supported in volume for this

product series. Contact the local Nuvoton Sales Representative or Distributor for availability

information.

When ordering, please refer to the following valid part numbers that are supported in volume for this

product series. Contact the local Nuvoton Sales Representative or Distributor for availability

information.

For the latest product information, access Nuvoton’s worldwide website

at http://www.nuvoton-usa.com

For the latest product information, access Nuvoton’s worldwide website

at http://www.nuvoton-usa.com

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13. VERSION HISTORY

VERSION DATE DESCRIPTION

A1 Apr 2005 Initial version

1 Jan 2006 Change to Preliminary

Update Ordering info with Pb-free option

1.1 Apr 2006 Update application diagram

1.2 Jan 2007 Update Rosc resistor value

Revise automatic power down mode

Update standby current parameter

Revise die physical layout section

1.21

Nov 2008 Update Application Circuit in Section 10

Remove PDIP package information

Change to Nuvoton Logo

1.22 Dec 2008 Remove vAlert feature

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Headquarters Nuvoton Technology Corporation America Technology Electronics (Shanghai) Ltd.

No. 4, Creation Rd. III 2727 North First Street, San Jose, 27F, 299 Yan An W. Rd. Shanghai,

Science-Based Industrial Park, CA 95134, U.S.A. 200336 China

Hsinchu, Taiwan TEL: 1-408-9436666 TEL: 86-21-62365999

TEL: 886-3-5770066 FAX: 1-408-5441797 FAX: 86-21-62356998

FAX: 886-3-5665577 http://www.Nuvoton-usa.com/

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SuperFlash®.

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