ISD/Winbond · 2727 North First Street, San Jose, CA 95134 · TEL: 408/943-6666 · FA X: 408/544-1787 · http://www.isd.com
August 2000
Figure: ISD4004 Series Block Diagram
GENERAL DESCRIPTION
The ISD4004 ChipCorder® Products provide high-
quality, 3-volt, single-chip record/playback solu-
tions for 8- to 16-minute messaging applications
which are ideal fo r cellul ar phone s an d other por -
table products. The CMOS-based devices include
an on-chip oscillator, antialiasing filter, smoothing
filter, AutoMute™ feature, audio amplifier, and
high density, multilevel Flash storage array. The
ISD4004 series is designed to be used in a micro-
processor- or microcontroller-based system. Ad-
dress and control are accomplished through a
Serial Peripheral Interface (SPI) or Microwire Serial
Interface to minimize pin count.
Recordings are stored in on-chip nonvolatile
memory cells, providing zero-power message
storage. This unique, single-chip solution is made
possible through ISD’s patented multilevel storage
technology. Voice and audio signals are stored
directly into memory in their natural form, providing
high -q u a l it y, so l id-state voic e re produc ti on.
ISD4004 Series
Single-Chip Voice Record/Playback Devices
8-, 10-, 12-, and 16-Minute Durations
ISD4004 Series
ii Voice Solutions in Silicon
Table: ISD4004 Series Summary
Part
Number
Duration
(minutes)
Input Sample
Rate (KHz)
Typical Filter Pass
Band (KHz)
ISD4004-08M 8.0 8.0 3.4
ISD4004-10M 10.0 6.4 2.7
ISD4004-12M 12.0 5.3 2.3
ISD4004-16M 16.0 4.0 1.7
FEATURES
Single-chip voice record/playbac k solution
Single +3 volt supply
Low-power consump tion
Operating current:
ICC Play = 15 mA (typical)
ICC Rec = 25 mA (typical)
Standby curre n t: 1 µA (ty pi cal)
Single -ch i p dur ati o ns o f 8, 10, 12, and
16 minutes
High-quality , natural voice/audio reproduction
AutoMute feature pr o vid es background noise
attenua tion during p eriods of silence
No algorithm development required
Microcontroller SPI or Microwire Serial
Interface
Fully ad d ressable to handle mult ip le
messages
Nonvolatile message storage
Power consumption co ntrolled by SPI
or Microwire control register
100-year message retention (typical)
100K record cycles (typical)
On-chip clock source
Available in die form, PDIP, SOIC, and TSOP
Extend ed te mperat ure (–20 °C to +7 0°C) an d
industrial temperature (–40°C to +85°C)
versions availa ble
Table of Contents
ISD iii
DETAILED DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Speech/Sound Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Flash Stor age . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Microcontrol ler Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
PIN DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Voltage Inputs (VCCA, VCCD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Ground Inputs (VSSA, VSSD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Non-Inverting Analog Input (ANA IN+) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Inverting Analo g Input ( A NA IN–) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Audio Output (AUD OUT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Slav e Select (SS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Master Out Slave In (MOSI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Master In Slave Out (MISO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Serial Clock (SCLK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Interrupt (IN T) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Row Address Clock (R AC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
External Cl ock Input (XCLK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
AutoMute™ Fe ature (AM CAP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SERIAL PERIPHERAL INTERFACE (SPI) DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Message Cueing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Power-U p Seque nce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SPI Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
SPI Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
TIMING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
DEVICE PHYSICAL DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
ORDERING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
ISD4004 Series
iv Voice Solutions in Silicon™
FIGURES, CHARTS, AND TABLES IN THE ISD4004 SERIES DATA SHEET
Figure 1: ISD4004 Series TSOP and PDIP/SOIC Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Figure 2: ISD4004 Series ANA IN Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Figure 3: SPI Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4: SPI Interface Simplified Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 5: Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 6: 8-Bit Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 7: 24-Bit Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 8: Playback/Recor d and Stop Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 9: Appl ication Example Using SPI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 10: Application Example Using Mic rowire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 11: Application Example Using SPI Por t on Microcontroller . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 12: 28-Lead 8x13.4 mm Plastic Thin Small Outline Package (TSOP ) Type I (E) . . . . . . . . 18
Figure 13: 28-Lead 0.600- Inch Plastic Dual Inline Pa ckage (PDIP) (P) . . . . . . . . . . . . . . . . . . . . 19
Figure 14: 28-Lead 0.300- Inch Plastic Small Outl ine Integrated Cir cuit (SOIC) (S) . . . . . . . . . . . 20
Figure 15: ISD4004 Series Bonding Physical Layout (Unpackaged Die) . . . . . . . . . . . . . . . . . . . 21
Table 1: External Cl ock Input Clocking Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Table 2: Opcode Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3: SPI Contro l Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4: Absolute Maximum Ratin gs (Packaged Parts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 5: Operating Conditions (Package d Parts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 6: DC Parameters (Package d Parts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 7: AC Parameters (Packaged Parts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 8: Absolute Maximum Ratings (Die) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 9: Operating Conditi ons (Die) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 10: DC Parameters ( Die) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 11: AC Parameters (Di e) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 12: SPI AC Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 13: Plastic Thin Small Outli ne Package (TSOP) Type I (E) Dimensions . . . . . . . . . . . . . . . . 18
Table 14: Plastic Dual Inline Package (P DIP) (P ) Dime nsions . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 15: Plastic Small Outline Integrated Circuit (SOIC) (S) Dimensions . . . . . . . . . . . . . . . . . . 20
Table 16: ISD4004 Seri e s Devic e Pin/Pad Designatio ns , wit h Respec t to Die Ce nt e r (µm) . . . . 22
ISD4004 Series
1
ISD
DETAILED DESCRIPTION
SPEECH/SOUND QUALITY
The ISD4004 ChipCorder series includes devices
offered at 4.0, 5.3, 6.4, and 8.0 KHz sampling fre-
quencies, allowing the user a choice of speech
quality options. Increasing the duration within a
product series decreases the sampling frequency
and bandwidth, which affects sound quality.
Please re fer to the ISD4004 Ser ies Pro duc t Summary
table on the second page to compare filter pass
band and product durations.
The spee ch samples are stored directly i nto on-ch ip
nonvolatile memory without the digitization and
compression associated with other solutions. Di-
rect analog storage provides a natural sounding
reproduction of voice, music, tones, and sound
effects not available with most solid-state solu-
tions.
DURATION
To meet end system requirements, the ISD4004 se-
r i es products are single-chip solutions at 8, 10, 12,
16 minutes.
FLASH STORAGE
One of the benefits of ISD’s ChipCorder technology
is the use of on-chip nonvolatile memory, which pro-
vides zer o- power message storage. Th e message
is retained for up to 100 years (typically) without
power. In addition, the device can be re-record-
ed (typically) over 100,000 times.
MICROCONTROLLER INTERFACE
A four-wire (SCLK, MOSI, MISO, SS) SPI interface is
provided for ISD4004 control and addressing
functions. The ISD4004 is configured to operate as
a peripheral slave device, with a microcontroller-
based SPI bus interface. Read/Write access to all
the internal registers occurs through this SPI inter-
face. An interrupt signal (INT) and internal read-
only Status Register are provided for handshake
purposes.
PROGRAMMING
The ISD4004 series is also ideal for playback-only
applications, where single or multiple message
Playback is controlled through the SPI port. Once
the desired message configuration is created, du-
plicates can easily be generated via an ISD pro-
grammer.
PIN DESCRIPTIONS
VOLTAGE INPUTS (VCCA, VCCD)
To minimize noise, the analog and digital circuits
in the ISD4004 devices use separate power busses.
These +3 V busses are brought out to separate
pins and should be tied together as close to the
supply as possible. In addition, these supplies
should be decoupled as close to the package as
possible.
GROUND INPUTS (VSSA, VSSD)
The ISD4004 series utilizes separate analog and
digital ground busses. The analog ground (VSSA)
pins should be tied together as close to the pack-
age as possible and connected through a low-
impedance path to power supply ground. The
digital ground (VSSD) pin should be connected
throug h a sep ara te low -imp edanc e path t o p ow-
er supply ground. These ground paths should be
large e nough to ens ure that th e impedance b e-
tween the VSSA pins and the VSSD pin is less than
3W. The backside of the die is connected to VSS
through the substrate resistance. In a chip-on-
board design, the die attach area must be con-
nected to VSS or left floating.
ISD4004 Series
2Voice Solutions in Silicon
Figure 2: ISD4004 Series ANA IN Modes
Figure 1: ISD4004 Series TSOP and PDIP/SOIC Pinouts
28-PIN TSOP
ISD4004
PDIP/SOIC
ISD4004
ISD4004 Series
3
ISD
NON-INVERTING ANALOG INPUT (ANA IN+)
This pin is the non-invert ing analog input that trans-
fers the signal to the device for recording. The an-
alog input amplifier can be driven single ended or
differentially. In the single-ended input mode, a
32 mVp-p (peak-to-peak) maximum signal shou ld
be capa citi vely c onn ected to th is p in f or opt imal
signal quality. This capacitor value, together with
the 3 KW i nput impedance of A NA IN+, is selected
to give cutoff at the low frequency end of the
voice passband. In the differential-input mode,
the maximum input signal at ANA IN+ should be
16 mVp-p for optimal signal quality. The circuit
connect ions for the two modes a re shown in Fig-
ure 2 on pa g e 2.
INVERTING ANALOG INPUT (ANA IN–)
This pin is the inverting analog input that transfers
the signal to the device for recording in the differ-
ential-input mode. In this differential-input mode,
a 16 mVp-p maximum input signal at ANA IN–
should be capacitively coupled to this pin for op-
timal signal quality as shown in the ISD4004 Series
ANA IN Modes, Figure 2. This capacitor value
should be equal to the coupling capacitor used
on the ANA IN+ pin. The input impedance at ANA IN–
is nominally 56 KW. In the single-ended mode, ANA
IN– should be capacitively coupled to VSSA
through a capacitor equal to that used on the
ANA IN+ input.
AUDIO OUTPUT (AUD OUT)
This pin provides the audio output to the user.
It is capable of driving a 5 KW impedance. It is
recommended th a t this pin be AC cou p l ed .
NOTE The AUDOUT pin is always at 1.2 volts when
the device is powered up. When in play-
back, the output buffer connected to this
pin can drive a load as small as 5 KW.
When in record, a resistor connects AUD-
OUT to the internal 1.2 volt analog ground
supply. This resistor is approximately
850 KW, but will vary somewhat according
to the sample rate of the device. This rel-
atively high impedance allows this pin to
be connected to an audio bus without
loading it down.
SLAVE SELECT (SS)
This input, when LOW, will select the ISD4004
device.
MASTER OUT SLAVE IN (MOSI)
This is the serial input to the ISD4004 device. The
master microcontroller places data on the MOSI
line one half-cycle before the rising clock edge to
be clocked in by th e ISD40 04 de vic e.
MASTER IN SLAVE OUT (MISO)
This i s the seri al ou tput of th e IS D4004 d evi ce. T his
output goes into a high-impedance state if the
devi ce is not selected.
SERIAL CLOCK (SCLK)
This is the clock input to the ISD4004. It is generat-
ed by the master device (microcontroller) and is
used to synchronize data transfers in and out of
the devi ce through the MISO an d MOSI lines. Dat a
is latched into the ISD4004 on the rising edge of
SCLK and shifted out of the device on the falling
edge of SCLK.
INTERRUPT (INT)
The ISD4004 interrupt pin goes LOW and stays LOW
when an Overflow (OVF) or End of Message (EOM)
marker is detected. This is an open drain output
pin. Ea ch operati on th at en ds in a n E OM or Over-
flow will generate an interrupt including the mes-
sage cueing cycles. The interrupt will be cleared
the next time an SPI cycle is initiated. The interrupt
status can be read by an RINT instruction.
Overflow Flag (OVF)—The Overflow flag indi-
cates t hat the end of the IS D4004 ’s ana log mem-
ory has been reached during a record or
playbac k op er ati on.
End of Message (EOM)—The End-of-Message
flag is set only during playback operation when an
EOM is found. There are eight EOM flag position
options per row.
ISD4004 Series
4Voice Solutions in Silicon
ROW ADDRESS CLOCK (RAC)
This is an open drain out put pin t hat pro vides a sig-
nal with a 200 ms period at the 8 KHz sampling fr e-
quency. (This represents a single row of memory
and there are 2400 rows of memory in the ISD4004
series devices.) This signal stays HIGH for 175 ms
and stays LOW for 25 ms when it reaches the end
of a row.
The RAC pin stays HIGH for 109.38 msec and stays
LOW for 15.63 msec in Message Cueing mode
(see page 5 for a more detailed description of
Message Cueing). Refer to the AC Parameters ta-
ble for RAC timing information on other sample
rate products.
When a record command is first initiated, the RAC
pin remai ns HIGH for an extr a TRACLO peri od. This is
due to the nee d to load sample and ho ld circu its
internal to the device. This pin can be used for
message man agement tech niques .
EXTERNAL CLOCK INPUT (XCLK)
The exte rnal clock input for the ISD4004 prod ucts
has an internal pull-down device. These products
are configured at the factory with an internal sam-
pling cloc k freque ncy cent ered to ±1 percent of
specification. The frequency is then maintained to
a vari ation over the entire com mercial tem pera-
ture and operating voltage ranges as defined by
the minimum/maximum limits in the applicable
AC Parameters table. The internal clock has a tol-
erance, over the extended temperature, industrial
t em pe ra t ur e and volta ge ranges as defined by the
minimum/maximum limits in the applicable AC
Parameters table. A regulated power supply is
recommended for industrial temperature range
parts. If greater precision is required, the device
can be clocke d through the XCLK pin in Table 1.
These recommended clock rates should not be
varied because the antialiasing and smoothing filters
are fixed. Thus, aliasing problems can occur if the
sampl e rat e di ff ers fr om t he on e re comm e nded .
The duty cycle on th e i nput clo ck i s not critical , as
the clock is immediatel y divided by two inte rn al l y.
If the XCLK is not used, this input should be
connected to ground.
AUTOMUTE™ FEATURE (AM CAP)
This pin is used in controlling the AutoMute feature.
The AutoMute feature attenuates the signal when
it drops below an internal ly set threshold. This helps
to eliminate noise ( with 6 dB of attenuation) when
there is no signal (i.e., during periods of silence). A
1 mF capacitor to ground should be connected to
the AM C AP pin. Thi s capacitor b ecomes a pa rt of
an internal peak detector which senses the signal
amplitude (peak). This peak level is compared to
an internally set threshold to determine the Auto-
Mute tr ip p oin t. F or la rge si gna ls the Aut oMu te a t-
tenuation is set to 0 dB while 6 dB of attenuation
occurs for silence. The 1 mF capacitor als o affe cts
the rate at which the AutoMute feature changes
with the signal amplitude (or the attack time). The
Automute feature can be disabled by connecting
the AM CAP pin to VCCA.
Table 1: External Clock Input Clocking
Table
Part Number Sample Rate Required Clock
ISD4004-08M 8.0 KHz 1024 KHz
ISD4004-10M 6.4 KHz 819.2 KHz
ISD4004-12M 5.3 KHz 682.7 KHz
ISD4004-16M 4.0 KHz 512 KHz
ISD4004 Series
5
ISD
SERIAL PERIPHERAL INTERFACE (SPI) DESCRIPTION
The ISD4004 series operates from an SPI serial inte r-
face. The SPI interface operates with the following
protocol.
The data transfer protocol assumes that the mi-
crocontroller’s SPI shift registers are clocked on the
falling edge of the SCLK. With the ISD4004, data is
clocked in on the MOSI pin on the rising clock
edge. Data is clocked out on the MISO pin on the
fall i ng cl ock edg e.
1. All seria l data transfers begin with th e falling
edge of SS pin.
2. SS is held LOW during all serial communica-
tions and held HIGH between instructions.
3. Data is clocked in on the risi ng clock edg e
and data is clocked out on the falling clock
edge.
4. Play and Re cord operati ons are initiated by
enablin g the device by as ser ting th e SS pin
LOW, shifting in an opco de and an address
field to the ISD4004 device (refer to the Op-
code Summary on the page 6).
5. The opcodes and address fields are as fol-
lows: <8 control bits> and <16 address
bits>.
6. Each operation that ends in an EOM or
Overfl ow will ge nerate an interrupt, includ-
ing the Message Cueing cycles. The Inter-
rupt will be cleared the next time an SPI
cycle is initiated.
7. As Interrupt data is shifted out of the
ISD4004 MISO pin, control and address
data is simultaneously being shifted into
the MOSI pin. Care should be taken such
that the data shifted in is compatible with
current system operation. It is possible to
read interrupt data and start a new opera-
tion within the same SPI cycle.
8. An operation begins with the RUN bit set
and ends with the RUN bit reset.
9. All operations begin with the rising edge
of SS.
MESSAGE CUEING
Message cueing allows the user to skip through
messages, without knowing the ac tual physical lo-
cation of the message. This operation is used dur-
ing playback. In this mode, the messages are
skipped 1600 times faster than in normal play-
back mode. It will stop when an EOM marker is
reached. Then, the internal address counter will
point to the next message.
ISD4004 Series
6Voice Solutions in Silicon
1. Message Cueing can be selected only at the
beginning of a play operation. 2. As the Interrupt data is shifted out of the ISD4004,
control and address data is being shifted in. Care
should be taken such that the data shifted in is
compatible with current system operation. It is
possible to read interrupt data and start a new
operation at the same time. See Figure 5 through
Figure 8 for Opcode format.
POWER-UP SEQUENCE
The ISD4004 will be ready for an operation after
TPUD (25 ms approximately for 8 KHz sample rate).
The user needs to wait TPUD before issuing an opera-
tional command. For example, to play from ad-
dress 00 the following programing cycle should be
used.
Playback Mode
1. Send POWERUP comman d.
2. Wait TPUD (power-up delay).
3. Send SETPLAY co mma nd with address 00.
4. Send PLAY command.
The devi ce w ill star t playback at address 00 a nd it
will generate an interrupt when an EOM is
reached. It will then stop playback.
Record Mode
1. Send POWERUP command.
2. Wait TPUD (power-up delay).
3. Send POWERUP command.
4. Send SETREC command wi th address 00.
5. Send REC command.
The device will start recor ding at address 00 and it
will generate an interrupt when an overflow is
reached (end of memory array). It will then stop re-
cording.
Table 2:Opcode Summary
Instruction Opcode <8 bits>
Address <16 bits> Operational Summary
POWERUP 00100XXX Power-Up: De vice will be ready for an operatio n after TPUD.
SETPLAY 11100XXX <A15–A0> Initiates Playback from address <A15–A0>.
PLAY 11110XXX Playback from the cu rrent ad dress (until EOM or OVF).
SETREC 10100XXX <A15–A0> Initiates a Record operation from address <A15–A0>.
REC 10110XXX Records from current address until OVF is reached.
SETMC 11101XXX <A15–A0> Initiates Message Cueing (MC) from address <A15–A0>.
MC111111XXX Performs a Message Cue. Proceeds to the end of the current
message (EOM) or enters OVF condition if no more messages are
present.
STOP 0X110XXX Stops current operation.
STOPPWRDN 0X01XXXX Stops current Operation and enters stand-by (power-down) mode.
RINT20X110XXX Read Interrupt status bits: Overflow and EOM.
ISD4004 Series
7
ISD
SPI PORT
The following diagram describes the SPI port and the control bits associated with it.
Figure 3: SPI Port
SPI CONTROL REGISTER
The SPI control register provides control of individual device functions such as Play, Record, Message
Cueing, Power-Up and Power-Down, Start and Stop operations, and Ignore Address pointers.
Table 3: SPI Control Register
Control
Register Bit Device Function Control
Register Bit Device Function
RUN Enable or Disabl e an operation PU Master power control
=
=1
0Start
Stop =
=1
0Power-Up
Power-Down
P/R Selects Play or Reco rd operation IAB Ignore address control bit
=
=1
0Play
Record =
=1
0Ignore input address register (A15–A0)
Use the input address register contents
for an operation (A15–A0)
MC Enable or Disable Message Cueing P15–P0 Output of the row pointer register
=
=1
0Enable Message Cueing
Disable Message Cueing A15–A0 In put ad dr e ss regi s ter
ISD4004 Series
8Voice Solutions in Silicon
1. Stresses above those listed may cause permanent
damage to the device. Exposure to the absolute
maximum ratings may affect device reliability.
Functional operation is not implied at these
conditions.
1. Case temperature.
2. VCC = VCCA = VCCD.
3. VSS = VSSA = VSSD.
Table 4: Absolute Maximum Ratings
(Packaged Parts)(1)
Condition Value
Junction temperature 150°C
Storage temperature range –65°C to +150°C
Voltag e app lie d to any pi n (VSS – 0.3 V) to
(VCC + 0.3 V)
Volt age app lie d to MOS I, SCLK,
INT, RAC and SS pins (input cu rrent
limited to ± 20mA
(VSS – 1.0 V) to
5.5V
Lead temperature
(soldering – 10 seconds) 300°C
VCCVSS –0.3 V to +7.0 V
Table 5: Operating Conditions
(Packaged Parts)
Condition Value
Commercial opera ting
temperature range(1) 0°C to +70°C
Extended operating
temperature(1) –20°C to +70°C
Industri al oper atin g
temperature(1) –40°C to +85°C
Supply vo ltage (VCC)(2) +2.7 V to +3.3 V
Ground voltage (VSS)(3) 0 V
Figure 4: SPI Interface Simplified Block Diagram
ISD4004 Series
9
ISD
1. Typical values: TA = 25°C and 3.0 V.
2. All min/max limits are guaranteed by ISD via electrical testing or characterization. Not all specifications are
100 percent tested.
3. VCCA and VCCD connected together.
4. SS = VCCA = VCCD, XCLK = MOSI = VSSA= VSSD and all other pins floating.
5. Measured with AutoMute feature disabled.
Table 6: DC Parameters (Packaged Parts)
Symbol Parameters Min(2) Typ(1) Max(2) Units Conditions
VIL Input Low Voltage VCC x0.2 V
VIH Input High Voltage VCC x0.8 V
VOL Output Low Voltage 0.4 V IOL = 10 µA
VOL1 RAC, I NT Output Low Voltage 0.4 V IOL = 1 mA
VOH Output High Voltage VCC –0.4 V I
OH = –10 µA
ICC VCC Current (Operating)
— Playback
— Record 15
25 30
40 mA
mA REXT = ¥(3)
REXT = ¥ (3)
ISB VCC Current (Standby) 1 10 µA (3) (4)
IIL Input Leakage C urrent ±1 µ A
IHZ MISO Tristate Current 1 10 µA
REXT Output Load Impedance 5 KW
RANA IN+ ANA IN+ Input Resistance 2.2 3.0 3.8 KW
RANA IN– ANA IN– Input Resistance 40 56 71 KW
AARP ANA IN+ or ANA IN– to AUD OUT Gain 25 dB (5)
Table 7: AC Parameters (Packaged Parts)
Symbol Characteristic Min(2) Typ(1) Max(2) Units Conditions
FSSampling
Frequency ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
8.0
6.4
5.3
4.0
KHz
KHz
KHz
KHz
(5)
(5)
(5)
(5)
FCF Filter Pass Band ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
3.4
2.7
2.3
1.7
KHz
KHz
KHz
KHz
3-dB Roll-Off Point(3) (7)
3-dB Roll-Off Point(3) (7)
3-dB Roll-Off Point(3) (7)
3-dB Roll-Off Point(3) (7)
TREC Record Duration ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
8
10
12
16
min
min
min
min
(6)
(6)
(6)
(6)
ISD4004 Series
10 Voice Solutions in Silicon
1. Typical values: TA = 25°C and 3.0 V.
2. All min/max limits are guaranteed by ISD via electrical testing or characterization. Not all specifications are 100 percent
tested.
3. Low-frequency cut off depends upon the value of external capacitors (see Pin Descriptions).
4. Single-ended input mode. In the differential input mode, VIN maximum for ANA IN+ and ANA IN– is 16mVp-p.
5. Sampling Frequency can vary as much as ±2.25 percent over the commercial temperature, and voltage ranges,
and –6/+4 percent over the extended temperature, industrial temperature and voltage ranges. For greater
stability, an external clock can be utilized (see Pin Descriptions).
6. Playback and Record Duration can vary as much as ±2.25 percent over the commercial temperature and voltage
ranges, and –6/+4 percent over the extended temperature, industrial temperature and voltage ranges. For
greater stability, an external clock can be utilized (see Pin Descriptions).
7. Filter specification applies to the antialiasing filter and the smoothing filter. Therefore, from input to output, expect a
6dB drop by nature of passing through both filters.
8. The typical output voltage will be approximately 570mVp-p with VIN at 32mVp-p.
9. For optimal signal quality, this maximum limit is recommended.
10. When a record command is sent, TRAC =T
RAC +T
RACLO on the first row addressed.
TPLAY Playback Duration ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
8
10
12
16
min
min
min
min
(6)
(6)
(6)
(6)
TPUD Power-Up Delay ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
25
31.25
37.5
50
msec
msec
msec
msec
TSTOP or
TPAUSE
Stop or Pau s e in
Record or Play ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
50
62.5
75
100
msec
msec
msec
msec
TRAC RAC Clock Period ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
200
250
300
400
msec
msec
msec
msec
(10)
(10)
(10)
(10)
TRACLO RAC Clock Low
Time ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
25
31.25
37.5
50
msec
msec
msec
msec
TRACM RAC Clock Period
in Message
Cueing Mode
ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
125
156.3
187.5
250
µsec
µsec
µsec
µsec
TRACML RAC Clock Low
Time in Message
Cueing Mode
ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
15.63
19.53
23.44
31.25
µsec
µsec
µsec
µsec
THD Tota l H ar mo n i c Distor t i o n 1 2 % @ 1 KHz
VIN ANA IN Input Voltage 32 mV Peak-to-Peak(4) (8) (9)
Table 7: AC Parameters (Packaged Parts)
Symbol Characteristic Min(2) Typ(1) Max(2) Units Conditions
ISD4004 Series
11
ISD
1. Stresses above those listed may cause permanent
damage to the device. Exposure to the absolute
maximum ratings may affect device reliability.
Functional operation is not implied at these conditions.
1. VCC = VCCA = VCCD
2. VSS = VSSA = VSSD.
Table 8: Absolute Maximum Ratings (Die)(1)
Condition Value
Junction temperature 150°C
Storage temperatu re range –65°C to +150°C
Voltag e appl ie d to any pa d (VSS – 0.3 V) to
(VCC + 0.3 V)
Vol tage appl ied t o MOS I, SCLK , I NT,
RAC and SS pins (input current
limited to ± 20mA
(VSS – 1.0 V) to
5.5 V
VCCVSS –0.3 V to +7.0 V
Table 9: Operating Conditions (Die)
Condition Value
Commercial opera ting
temperature range 0°C to +50°C
Supply voltage (VCC)(1) +2.7 V to +3.3 V
Ground voltage (VSS)(2) 0 V
1. Typical values: TA = 25°C and 3.0 V.
2. All min/max limits are guaranteed by ISD via electrical testing or characterization. Not all specifications are
100 percent tested.
3. VCCA and VCCD connected together.
4. SS = VCCA= VCCD, XCLK = MOSI = VSSA = VSSD and all other pins floating.
5. Measured with AutoMute feature disabled.
Table 10: DC Parameters (Die)
Symbol Parameters Min(2) Typ(1) Max(2) Units Conditions
VIL Input Low Voltage VCC x0.2 V
VIH Input High Voltage VCC x0.8 V
VOL Output Low Voltage 0.4 V IOL = 10 µA
VOL1 RAC, INT Output Low Voltage 0.4 V IOL = 1 mA
VOH Output High Voltage VCC –0.4 V I
OH = –10 µA
ICC VCC Current (Operating)
— Playback
— Record 15
25 30
40 mA
mA REXT = ¥ (3)
REXT = ¥ (3)
ISB VCC Current (Standby) 1 10 µ A (3) (4)
IIL Input Leakage Current ±1 µA
IHZ MISO Tristate Current 1 10 µA
REXT Output Load Impedance 5 KW
RANA IN + ANA IN+ Input Resistance 2.2 3.0 3.8 KW
RANA IN ANA IN– Input Resistance 40 56 71 KW
AARP ANA IN+ or ANA IN– to AUDOUT Gain 25 dB (5)
ISD4004 Series
12 Voice Solutions in Silicon
Table 11: AC Parameters (Die)
Symbol Characteristic Min(2) Typ(1) Max(2) Units Conditions
FSSampling
Frequency ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
8.0
6.4
5.3
4.0
KHz
KHz
KHz
KHz
(5)
(5)
(5)
(5)
FCF Filter Pass Band ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
3.4
2.7
2.3
1.7
KHz
KHz
KHz
KHz
3dB Roll-Off Point (3) (6)
3dB Roll-Off Point (3) (6)
3dB Roll-Off Point (3) (6)
3dB Roll-Off Point (3) (6)
TREC Record Duration ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
8
10
12
16
min
min
min
min
(5)
(5)
(5)
(5))
TPLAY Playback Duration ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
8
10
12
16
min
min
min
min
(5)
(5)
(5)
(5)
TPUD Power-Up Delay ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
25
31.25
37.5
50
msec
msec
msec
msec
TSTOP or
TPAUSE
Stop or Pause in
Record or Play ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
50
62.5
75
100
msec
msec
msec
msec
TRAC RAC Clock Period ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
200
250
300
400
msec
msec
msec
msec
(9)
(9)
(9)
(9)
TRACLO R AC Clock Low
Time ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
25
31.25
37.5
50
msec
msec
msec
msec
TRACM R A C Cl oc k P eriod
in Message
Cueing Mode
ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
125
156.3
187.5
250
msec
msec
msec
msec
TRACML R A C Cl ock Low
Time in Message
Cueing Mode
ISD4004-08M
ISD4004-10M
ISD4004-12M
ISD4004-16M
15.63
19.53
23.44
31.25
msec
msec
msec
msec
ISD4004 Series
13
ISD
1. Typical values: TA = 25°C and 3.0 V.
2. All min/max limits are guaranteed by ISD via electrical testing or characterization. Not all specifications are 100
percent tested.
3. Low-frequency cut off depends upon the value of external capacitors (see Pin Descriptions).
4. Single-ended input mode. In the differential input mode, VIN maximum for ANA IN+ and ANA IN– is 16 mV peak-
to-peak.
5. Sampling Frequency and Duration can vary as much as ±2.25 percent over the commercial temperature and
voltage ranges. For greater stability, an external clock can be utilized (see Pin Descriptions).
6. Filter specification applies to the antialiasing filter and to the smoothing filter.
7. The typical output voltage will be approximately 570 mV peak-to-peak with VIN at 32 mV peak-to-peak.
8. For optimal signal quality, this maximum limit is recommended.
9. When a record command is sent, TRAC =T
RAC +T
RACLO on the first row addressed.
1. Typical values: TA= 25°C and 3.0 V. Timing measured at 50 percent of the VCC level.
2. Tristate test condition.
THD Total Ha rmonic Distort ion 1 2 % @ 1 KHz
VIN ANA IN Input Voltage 32 mV Peak-to-Peak(4) (7) (8)
Table 12: SPI AC Parameters1
Symbol Characteristics Min Max Units Conditions
TSSS SS Setup Time 500 nsec
TSSH SS Hold Time 500 nsec
TDIS Data in Setup Time 200 nsec
TDIH Data in Hold Time 200 nsec
TPD Output Delay 500 nsec
TDF(2) Output Delay to hiZ 500 nsec
TSSmin SS HIGH 1 msec
TSCKhi SCLK High Time 400 nsec
TSCKlow SCLK Low Time 400 nsec
F0CLK Frequency 1,000 KHz
Table 11: AC Parameters (Die)
Symbol Characteristic Min(2) Typ(1) Max(2) Units Conditions
ISD4004 Series
14 Voice Solutions in Silicon
TIMING DIAGRAMS
Figure 5: Timing Diagram
Figure 6: 8-Bit Command Format
ISD4004 Series
15
ISD
Figure 7: 24-Bit Command Format
Figure 8: Playback/Record and Stop Cycle
SS
MOSI
MISO
A6 A7 A8 A9 A10 A11 A12 A13 A14 A15
A0 A1 A2 A3 A4 A5
P4 P5 P6 P7 P8 P9OVF EOM P0 P1 P2 P3 P10
SCLK
BYTE 1 BYTE 2 BYTE 3
P11 P12 P13 P14 P15 P16 X X X X X
C3 C4
C2
C1C0
XXX
ISD4004 Series
16 Voice Solutions in Silicon
Figure 9: Application Example Using SPI(1)
1. This application example is for illustration purposes only. ISD makes no representation or warranty that such
application will be suitable for production.
2. Please make sure the bypass capacitor, C2 is as close as possible to the package.
ISD4004 Series
17
ISD
Figure 10: Application Example Using Microwire(1)
1. This application example is for illustration purposes only. ISD makes no representation or warranty that such
application will be suitable for production.
2. Please make sure the bypass capacitor, C2 is as close as possible to the package.
Figure 11: Application Example Using SPI Port on Microcontroller(1)
1. This application example is for illustration purposes only. ISD makes no representation or warranty that such
application will be suitable for production.
2. Please make sure the bypass capacitor, C2 is as close as possible to the package.
ISD4004 Series
18 Voice Solutions in Silicon
DEVICE PHYSICAL DIMENSIONS
Figure 12: 28-Lead 8x13.4 mm Plastic Thin Small Outline Package (TSOP) Type I (E)
NOTE: Lead coplanarity to be within 0.004 inches.
Table 13: Plastic Thin Small Outline Package (TSOP) Type I (E) Dimensions
INCHES MILLIMETERS
Min Nom Max Min Nom Max
A 0.520 0.528 0.535 13.20 13.40 13.60
B 0.461 0.465 0.469 11.70 11.80 11.90
C 0.311 0.315 0.319 7.90 8.00 8.10
D 0.002 0.006 0.05 0.15
E 0.007 0.009 0.011 0.17 0.22 0.27
F 0.0217 0.55
G 0.037 0.039 0.041 0.95 1.00 1.05
H0°3°6°0°3°6°
I 0.020 0.022 0.028 0.50 0.55 0.70
J 0.004 0.008 0.10 0.21
ISD4004 Series
19
ISD
Figure 13: 28-Lead 0.600-Inch Plastic Dual Inline Package (PDIP) (P)
Table 14: Plastic Dual Inline Package (PDIP) (P) Dimensions
INCHES MILLIMETERS
Min Nom Max Min Nom Max
A 1.445 1.450 1.455 36.70 36.83 36.96
B1 0.150 3.81
B2 0.065 0.070 0.075 1.65 1.78 1.91
C1 0.600 0.625 15.24 15.88
C2 0.530 0.540 0.550 13.46 13.72 13.97
D0.19 4.83
D1 0.015 0.38
E 0.125 0.135 3.18 3.43
F 0.015 0.018 0.022 0.38 0.46 0.56
G 0.055 0.060 0.065 1.40 1.52 1.65
H 0.100 2.54
J 0.008 0.010 0.012 0.20 0.25 0.30
S 0.070 0.075 0.080 1.78 1.91 2.03
q 15° 15°
ISD4004 Series
20 Voice Solutions in Silicon
Figure 14: 28-Lead 0.300-Inch Plastic Small Outline Integrated Circuit (SOIC) (S)
NOTE: Lead coplanarity to be within 0.004 inches.
Table 15: Plastic Small Outline Integrated Circuit (SOIC) (S) Dimensions
INCHES MILLIMETERS
Min Nom Max Min Nom Max
A 0.701 0.706 0.711 17.81 17.93 18.06
B 0.097 0.101 0.104 2.46 2.56 2.64
C 0.292 0.296 0.299 7.42 7.52 7.59
D 0.005 0.009 0.0115 0.127 0.22 0.29
E 0.014 0.016 0.019 0.35 0.41 0.48
F 0.050 1.27
G 0.400 0.406 0.410 10.16 10.31 10.41
H 0.024 0.032 0.040 0.61 0.81 1.02
ISD4004 Series
21
ISD
Figure 15: ISD4004 Series Bonding Physical Layout1 (Unpackaged Die)
1. The backside of die is internally connected to VSS. It MUST NOT be connected to any other potential or damage
may occur.
2. Double bond recommended.
3. This figure reflects the current die thickness. Please contact ISD as this thickness may change in the future.
ISD4004 Series
I. Die Dimensions
X: 4230 micr on s
Y: 9780 micr on s
II. Die Thickness(3)
11.5 ±0.5 mils
III. Pad Opening (min)
90 x 90 micr on s
3.5 x 3.5 mils
VCCD1
VSSA
AUD OUT
AM CAP
ANA IN–
INT
VSSA
XCLK
VCCD2
SS
MOSI
MISOVSSD2
VSSD1
ISD4004
RAC
SCLK
VSSA(2)
ANA IN+
VCCA(2)
ISD4004 Series
22 Voice Solutions in Silicon
1. Double bond recommended.
Table 16: ISD4004 Series Device Pin/Pad Designations,
with Respect to Die Center (µm)
Pin Pin Name X Axis Y Axis
VSSA VSS Analog Power Supply –1898.1 –4622.4
VSSA VSS Analog Power Supply –1599.9 –4622.4
AUD OUT Audio Output 281.9 –4622.4
AM CAP AutoMute 577.3 –4622.4
ANA IN – Inverting Analog Input 1449.4 –4622.4
ANA IN + Noninverting Analog Input 1603.5 –4622.4
VCCA(1) VCC Analog Power Supp ly 1898.7 –4622.4
VSSA VSS Analog Power Supply 1885.2 –4622.4
RAC Row Address Clock 1483.8 4623.7
INT Interrupt 794.8 4623.7
XCLK External Clock Inp ut 564.8 4623.7
VCCD2 VCC Digital Power Supply 387.9 4623.7
VCCD1 VCC Digital Power Supply 169.5 4623.7
SCLK Slave Cl ock –14.7 4623.7
SS Slave Select –198.1 4623.7
MOSI Master Out Slave In –1063.7 4623.7
MISO Master In Slave Out –1325.6 4623.7
VSSD1 VSS Digital Power Suppl y –1655.3 4623.7
VSSD2 VSS Digital Power Suppl y –1836.9 4623.7
ISD4004 Series
23
ISD
ORDERING INFORMATION
When ordering ISD4004 series devices, please refer to the following valid part numbers.
For the latest product information, access ISD’s worldwide website at http://www.isd.com.
Part Number Part Number Part Number Part Number
ISD4004-08ME ISD4004-10ME ISD4004-12ME ISD4004-16ME
ISD4004-08MED ISD4004-10MED ISD4004-12MED ISD4004-16MED
ISD4004-08MEI ISD4004-10MEI ISD4004-12MEI ISD4004-16MEI
ISD4004-08MP ISD4004-10MP ISD4004-12MP ISD4004-16MP
ISD4004-08MS ISD4004-10MS ISD4004-12MS ISD4004-16MS
ISD4004-08MSI ISD4004-10MSI ISD4004-12MSI ISD4004-16MSI
ISD4004-08MX ISD4004-10MX ISD4004-12MX ISD4004-16MX
Product Family
ISD4000 Famil y
Product Series
04 = Fourth Series (8–16 min)
Duration:
08M=8 minutes
10M=10 minutes
12M=12 minutes
16M=16 minutes
Special Temperature Field:
Blank= Commercial Packaged (0°C to +70°C)
or Commercial Die (0°C to +50°C)
D= Extended (–20°C to +70°C)
I= Industrial (–40°C to +85°C)
Package Type:
E= 28-Lead 8x13.4mm Plastic Thin Small Outline
Package (TSOP) Typ e 1
P= 28-Lead 0.600-Inch Plastic Dual Inline Package
(PDIP)
S= 28-Lead 0.300-Inch Plastic Small Outline Package
(SOIC)
X=Die
ISD4004– _ _ _ _ _
Product Number Descriptor Key
Part No. 2200998D4004
2727 North First Street
San Jose, California 95134
Tel: 408/943-6666
Fax: 408/544-1787
IMPORTANT NOTICES
The warranty for each product of ISD (Information Storage
Devices, Inc.), is contained in a written warranty which governs
sale and use of such product. Such warranty is contained in the
printed terms and conditions under which such product is sold, or
in a separate written warranty supplied with the product. Please
refer to such written warranty with respect to its applicability to
certain applications of such product.
These products may be subject to restrictions on use. Please
contact ISD, for a list of the current additional restrictions on
these products. By purchasing these products, the purchaser of
these products agrees to comply with such use restrictions. Please
contact ISD for clarification of any restrictions described herein.
ISD, reserves the right, without further notice, to change the ISD
ChipCorder product specifications and/or information in this
document and to improve reliability, functions and design.
ISD assumes no responsibility or liability for any use of the ISD
ChipCorder products. ISD conveys no license or title, either
expressed or implied, under any patent, copyright, or mask work
right to the ISD ChipCorder products, and ISD makes no
warranties or representations that the ISD ChipCorder products are
free from patent, copyright, or mask work right infringement,
unless otherwise specified.
Application examples and alternative uses of any integrated
circuit contained in this publication are for illustration purposes
only and ISD makes no representation or warranty that such
applications shall be suitable for the use specified.
The 100-year retention and 100K record cycle projections are
based upon accelerated reliability tests, as published in the ISD
Reliability Report, and are neither warranted nor guaranteed by
ISD.
Information contained in this ISD ChipCorder data sheet
supersedes all data for the ISD ChipCorder products published
by ISD prior to September, 1998.
This data sheet and any future addendum to this data sheet is
(are) the complete and controlling ISD ChipCorder product
specifications. In the event any inconsistencies exist between the
information in this and other product documentation, or in the
event that other product documentation contains information in
addition to the information in this, the information contained
herein supersedes and governs such other information in its entirety.
Copyright© 1998, ISD (Information Storage Devices, Inc.) All rights
reserved. ISD is a registered trademark of ISD. ChipCorder is a
trademark of ISD. All other trademarks are properties of their
respective owners.