ISD4002
ISD ChipCorder®
ISD4002 Series
Datasheet
The information described in this document is the exclusive intellectual property of
Nuvoton Technology Corporation and shall not be reproduced without permission from Nuvoton.
Nuvoton is providing this document only for reference purposes of Audio Product Line based system
design. Nuvoton assumes no responsibility for errors or omissions.
All data and specifications are subject to change without notice.
For additional information or questions, please contact: Nuvoton Technology Corporation.
www.nuvoton.com
Jun 28, 2021
Page 1 of 33
Rev 1.6
ISD4002
Table of Contents
1. GENERAL DESCRIPTION .................................................................................... 3
2. FEATURES............................................................................................................ 3
3. BLOCK DIAGRAM ................................................................................................. 4
4. PIN CONFIGURATION .......................................................................................... 5
5. PIN DESCRIPTION ............................................................................................... 6
6. FUNCTIONAL DESCRIPTION ............................................................................ 10
6.1.
Detailed Description ................................................................................... 10
6.2.
Serial Peripheral Interface (SPI) Description .............................................. 10
6.2.1 OPCODES .............................................................................................. 12
6.2.2 SPI Diagrams .......................................................................................... 13
6.2.3 SPI Control and Output Registers ........................................................... 14
7. TIMING DIAGRAMS ............................................................................................ 16
8. ABSOLUTE MAXIMUM RATINGS ...................................................................... 18
8.1.
Operating Conditions ................................................................................. 19
9. ELECTRICAL CHARACTERISTICS .................................................................... 20
9.1.
Parameters For Packaged Parts ................................................................ 20
9.2.
Parameters For Die .................................................................................... 22
9.3.
SPI AC Parameters .................................................................................... 23
10. TYPICAL APPLICATION CIRCUIT...................................................................... 24
11. PACKAGING AND DIE INFORMATION .............................................................. 27
11.1. 28-Lead 300-Mil Plastic Small Outline IC (SOIC) ....................................... 27
11.2. 28-Lead 600-Mil Plastic Dual Inline Package (PDIP) ................................. 28
11.3. Die Information ........................................................................................... 29
12. ORDERING INFORMATION ............................................................................... 31
13. REVISION HISTORY ........................................................................................... 32
Important Notice ........................................................................................................ 33
Jun 28, 2021
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Rev 1.6
ISD4002
1. GENERAL DESCRIPTION
The ISD4002 ChipCorder® series provides high-quality, 3-volt, single-chip record/playback solutions for
2- to 4-minute messaging applications ideally for cellular phones and other portable products. The
CMOS-based devices include an on-chip oscillator, anti-aliasing filter, smoothing filter, AutoMute®
feature, audio amplifier, and high density multilevel Flash memory array. The ISD4002 series is
designed to be used in a microprocessor- or microcontroller-based system. Address and control are
accomplished through a Serial Peripheral Interface (SPI) or Microwire Serial Interface to minimize pin
count.
Recordings are stored into the on-chip Flash memory cells, providing zero-power message storage.
This unique single-chip solution utilizes Nuvoton’s patented multilevel storage technology. Voice and
audio signals are directly stored onto memory array in their natural form, providing high-quality voice
reproduction.
2. FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Single-chip voice record/playback solution
Single 3 volt supply
Low-power consumption
Operating current:
- ICC_Play = 15 mA (typical)
- ICC_Rec = 25 mA (typical)
Standby current:
- ICC_Standby = 1 µA (typical)
Single-chip durations of 120, 150, 180, and 240 seconds
High-quality, natural voice/audio reproduction
AutoMute feature provides background noise attenuation
No algorithm development required
Micorcontroller SPI or Microwire™ Serial Interface
Fully addressable to handle multiple messages
Non-volatile message storage
100K record cycles (typical)
100-year message retention (typical)
On-chip clock source
Power consumption controlled by SPI or Microwire control register
Available in die, PDIP, and SOIC
Packaged type: Lead-Free
Temperature:
- Commercial (die): 0°C to +50°C
- Commercial (packaged units): 0°C to +70°C
- Industrial (packaged units): -40°C to +85°C
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ISD4002
3. BLOCK DIAGRAM
Internal Clock
Timing
XCLK
Sampling Clock
ANA IN-
Amp
5-Pole Active
Antialiasing Filter
Analog Transceivers
960K Cell
Nonvolatile
Multilevel Storage
Array
Decoders
ANA IN+
5-Pole Active
Smoothing Filter
AutoMuteTM
Feature
Amp
Power Conditioning
VCCA
Jun 28, 2021
VSSA
VSSA VSSA VSSD VCCD
AUDOUT
Device Control
SCLK
SS
MOSI MISO
Page 4 of 33
INT
RAC
AM CAP
Rev 1.6
ISD4002
4. PIN CONFIGURATION
SS
1
28
SCLK
MOSI
2
27
VCCD
MISO
3
26
XCLK
VSSD
4
25
INT
NC
5
24
RAC
NC
6
23
VSSA
NC
7
22
NC
NC
8
21
NC
ISD4002
NC
9
20
NC
NC
10
19
NC
VSSA
11
18
VCCA
VSSA
12
17
ANA IN+
AUD OUT
13
16
ANA IN-
AM CAP
14
15
NC
SOIC / PDIP
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ISD4002
5. PIN DESCRIPTION
PIN NAME
PIN #
FUNCTION
SOIC /
PDIP
1
Slave Select: This input, when LOW, will select the ISD4002 device.
MOSI
2
Master Out Slave IN: This is the serial input to the ISD4002 device when it
is configured as slave. The master microcontroller places data on the MOSI
line one half-cycle before the rising edge of SCLK for clocking into the
device.
MISO
3
Master In Slave Out: This is the serial output of the ISD4002 device. This
output goes into a high-impedance state if the device is not selected.
VSSA / VSSD
11, 12,
23 / 4
Ground: The ISD4002 series utilizes separate analog and digital ground
busses. The analog ground (VSSA) pins should be tied together as close as
possible and connected through a low-impedance path to power supply
ground. The digital ground (VSSD) pin should be connected through a
separate low-impedance path to power supply ground. These ground paths
should be large enough to ensure that the impedance between the VSSA pins
and the VSSD pin is less than 3 Ω. The backside of the die is connected to
VSS through the substrate. For chip-on-board design, the die attach area
must be connected to VSS or left floating.
NC
5-10,
15, 1922
Not connected
AUD OUT [1]
13
Audio Output: This pin provides an audio output of the stored data and is
recommended be AC coupled. It is capable of driving a 5 KΩ impedance
REXT.
AM CAP
14
AutoMute™ Feature: The AutoMute feature only applies for playback
operation and helps to minimize noise (with 6 dB of attenuation) when there
is no signal (i.e. during periods of silence). A 1 µF capacitor to ground is
recommended to connect to the AM CAP pin.
This capacitor becomes a part of an internal peak detector which senses the
signal amplitude. This peak level is compared to an internally set threshold
to determine the AutoMute trip point. For large signals, the AutoMute
attenuation is set to 0 dB automatically but 6 dB of attenuation occurs for
silence. The 1 µF capacitor also affects 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
directly to VCCA..
SS
[1] The AUD OUT pin is always at 1.2 volts when the device is powered up. When in playback, the output buffer
connected to this pin can drive a load as small as 5 KΩ. When in record, a resistor connects AUD OUT to the
internal 1.2-volt analog ground supply. This resistor is approximately 850 KΩ, but will vary somewhat according to
the sample rate of the device. This relatively high impedance allows this pin to be connected to an audio bus without
loading it down.
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ISD4002
PIN NAME
PIN #
FUNCTION
SOIC /
PDIP
ANA IN-
16
Inverting Analog Input: This pin transfers the signal into the device during
recording via differential-input mode.
In this differential-input mode, a 16 mVp-p maximum input signal should be
capacitively coupled to ANA IN- for optimal signal quality, as shown in Figure
1: ANA IN Modes. This capacitor value should be equal to that used on ANA
IN+ pin. The input impedance at ANA IN- is normally 56 KΩ.
In the single-ended mode, ANA IN- should be capacitively coupled to VSSA
through a capacitor equal to that used on the ANA IN+ pin.
ANA IN+
17
Non-Inverting Analog Input: This pin is the non-inverting analog input that
transfers the signal to the device for recording. The analog input amplifier
can be driven single ended or differentially.
In the single-ended input mode, a 32 mVp-p (peak-to-peak) maximum signal
should be capacitively connected to this pin for optimal signal quality. The
external capacitor associated with ANA IN+ together with the 3 KΩ input
impedance are 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 capacitively coupled for optimal signal quality. The circuit
connections for the two modes are shown in Figure 1.
VCCA / VCCD
18 / 27
Supply Voltage: To minimize noises, the analog and digital circuits in the
ISD4002 devices use separate power busses. These +3V 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.
RAC
24
Row Address Clock: This is an open drain output that provides the signal
of a ROW with a 200 ms period for 8 KHz sampling frequency. (This
represents a single row of memory) 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 109.37 µsec and stays LOW for 15.63 µsec in
Message Cueing mode (see Message Cueing section for detailed
description). Refer to the AC Parameters table for RAC timing information
at other sample rates.
When a record command is first initiated, the RAC pin remains HIGH for an
extra TRACL period. This is due to the need of loading the internal sample and
hold circuits in the device. This pin can be used for message management
techniques.
A pull-up resistor is required to connect to other device.
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Rev 1.6
ISD4002
PIN NAME
PIN #
FUNCTION
SOIC /
PDIP
INT
25
Interrupt: This is an open drain output pin. This pin goes LOW and stays
LOW when an Overflow (OVF) or End of Message (EOM) marker is
detected. Each operation that ends with an EOM or OVF will generate an
interrupt. The interrupt will be cleared the next time an SPI cycle is initiated.
The interrupt status can also be read by an RINT instruction.
A pull-up resistor is required to connect to other device.
Overflow Flag (OVF) – The Overflow flag indicates that the end of memory
has been reached during a record or playback operation.
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.
XCLK
26
External Clock Input: The ISD4002 series is configured at the factory with
an internal sampling clock frequency centered to ±1 percent of specification.
The frequency is then maintained to a variation of ±2.25 percent over the
entire commercial temperature and operating voltage ranges. The internal
clock has a –6/+4 percent tolerance over the industrial temperature and
voltage ranges. A regulated power supply is recommended for industrial
temperature range parts. If greater precision is required, the device can be
clocked through the XCLK pin as follows:
Part Number
Sample Rate
Required
Clock
ISD4002-120
8.0 kHz
1024 kHz
ISD4002-150
6.4 kHz
819.2 kHz
ISD4002-180
5.3 kHz
682.7 kHz
ISD4002-240
4.0 kHz
512 kHz
These recommended clock rates should not be varied because the antialiasing and smoothing filters are fixed. Otherwise, aliasing problems can
occur if the sample rate differs from the one recommended. The duty cycle
on the input clock is not critical, as the clock is immediately divided by two.
If the XCLK is not used, this input must be connected to ground.
SCLK
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28
Serial Clock: This is the input clock to the ISD4002 device. It is generated
by the master device (typically microcontoller) and is used to synchronize
the data transfer in and out of the device through the MOSI and MISO lines,
respectively. Data is latched into the ISD4002 on the rising edge of SCLK
and shifted out of the device on the falling edge of SCLK.
Page 8 of 33
Rev 1.6
ISD4002
Internal to the device
53KΩ
0.1 µ F
Signal
3KΩ
ANA IN+
32m Vp-p
To Filter
+
0.1 µ F
3KΩ
ANA IN-
53KΩ
1.2V
Single-Ended Input Mode
Internal to the device
53KΩ
0.1 µ F
3KΩ
ANA IN+
Input Signal
16m Vp-p
-
Input Signal
16m Vp-p
180°
+
To Filter
0.1 µ F
3KΩ
ANA IN-
53KΩ
1.2V
Differential Input Mode
FIGURE 1: ISD4002 SERIES ANA IN MODES
TRAC
(200 ms)
RAC
25 ms
TRACL
FIGURE 2: RAC TIMING WAVEFORM DURING NORMAL OPERATION
(example of 8KHz sampling rate)
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ISD4002
6. FUNCTIONAL DESCRIPTION
6.1. DETAILED DESCRIPTION
Audio Quality
The Nuvoton’s ISD4002 ChipCorder® series is offered at 8.0, 6.4, 5.3 and 4.0 kHz sampling frequencies,
allowing the user a choice of speech quality options. Increasing the sampling frequency will produce
better sound quality, but affects duration. Please refer to Table 1: Product Summary for details.
Analog speech samples are stored directly into on-chip non-volatile memory without the digitization and
compression associated with other solutions. Direct analog storage provides higher quality reproduction
of voice, music, tones, and sound effects than other solid-state solutions.
Duration
The ISD4002 Series is a single-chip solution with 120, 150, 180, and 240 seconds duration.
TABLE 1: PRODUCT SUMMARY OF ISD4002 SERIES
Part Number
Duration
(Seconds)
Sample Rate
(kHz)
Typical Filter Pass
Band (kHz) *
ISD4002-120
120
8.0
3.4
ISD4002-150
150
6.4
2.7
ISD4002-180
180
5.3
2.3
ISD4002-240
240
4.0
1.7
* This is the –3dB point. This parameter is not checked during production testing and may vary due to process
variations and other factors. Therefore, the customer should not rely upon this value for testing purposes.
Flash Storage
The ISD4002 series utilizes on-chip Flash memory, providing zero-power message storage. The
message is retained for up to 100 years typically without power. In addition, the device can be rerecorded typically over 100,000 times.
Memory Architecture
The ISD4002 series contains a total of 960K Flash memory cells, which is organized as 600 rows of
1,600 cells each.
Microcontroller Interface
A four-wire (SCLK, MOSI, MISO & SS ) SPI interface is provided for controlling and addressing
functions. The ISD4002 is configured to operate as a peripheral slave device, with a microcontrollerbased SPI bus interface. Read and write operations are controlled through this SPI interface. An
interrupt signal ( INT ) and internal read only Status Register are provided for handshake purposes.
Programming
The ISD4002 series is also ideal for playback-only applications, where single- or multiple-messages
playback is controlled through the SPI port. Once the desired message configuration is created,
duplicates can easily be generated via a programmer.
6.2. SERIAL PERIPHERAL INTERFACE (SPI) DESCRIPTION
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Rev 1.6
ISD4002
The ISD4002 series operates via SPI serial interface with the following protocol.
First, the data transfer protocol assumes that the microcontroller’s SPI shift registers are clocked on the
falling edge of the SCLK. However, for the ISD4002, the protocols are as follows:
1. All serial data transfers begin with the falling edge of SS pin.
2. SS is held LOW during all serial communications and held HIGH between instructions.
3. Data is clocked in on the rising edge of the SCLK signal and clocked out on the falling edge of
the SCLK signal, with LSB first.
4. Playback and record operations are initiated when the device is enabled by asserting the SS
pin LOW, shifting in an opcode and an address data to the ISD4002 device (refer to the Opcode
Summary in the following page).
5. The opcodes contain and .
6. Each operation that ends with an EOM or Overflow will generate an interrupt. The Interrupt will
be cleared the next time a SPI cycle is initiated.
7. As Interrupt data is shifted out of the MISO pin, control and address data are simultaneously
shifted into the MOSI pin. Care should be taken such that the data shifted in is compatible with
current system operation. Because it is possible to read an interrupt data and start a new
operation 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 after the rising edge of SS .
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ISD4002
6.2.1 OPCODES
The available Opcodes are summarized as follows:
TABLE 2: OPCODE SUMMARY
OpCodes
Instructions
POWERUP
SETPLAY
Address (11 bits)
0
0
1
0
0
Power-Up: Device will be ready for an operation after
TPUD.
0
0
1
1
1
Initiates playback from address .
0
1
1
1
1
Playback from the current address (until EOM or
OVF).
0
0
1
0
1
Initiates a record operation from address .
0
1
1
0
1
Records from current address until OVF is reached or
Stop command is sent.
1
0
1
1
1
Initiates Message Cueing (MC) from address .
1
1
1
1
1
Performs a Message Cueing from current location.
Proceeds to the end of message (EOM) or enters OVF
condition if no more messages are present.
PLAY
SETREC
REC
SETMC
Descriptions
Control bits (5 bits)
C0 C1 C2 C3 C4
MC [2]
STOP
0
1
1
X
0
Stops the current operation.
STOPPWRDN
X
1
0 X
0
Stops the current operation and enters into standby
(power-down) mode.
RINT [3]
0
1
1
0
Read Interrupt status bits: Overflow and EOM.
X
Notes:
C0 = Message cueing
C1 = Ignore address bit
C2 = Master power control
C3 = Record or playback operation
C4 = Enable or disable an operation
[2] Message Cueing can be selected only at the beginning of a playback operation.
[3] As the Interrupt data is shifted out of the ISD4002, control and address data are 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 Figures 5 - 8 for references.
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ISD4002
6.2.2 SPI Diagrams
MOSI
Input Shift Register
(Loaded to Row Counter
A0-A9
only if IAB = 0)
Select Logic
Row Counter
P0-P9
OVF EOM
MISO
Output Shift Register
FIGURE 3: SPI INTERFACE SIMPLIFIED BLOCK DIAGRAM
The following diagram describes the SPI port and the control bits associated with it.
MISO
OVF EOM
P0
P1
P2
P3
P4
P5
P6
P7
P8
P9
X
0
0
MSB
LSB
MOSI
A0
0
A1
A2
A3
A4
A5
A6
A7
A8
A9
0
C0
C1
C2
C3
C4
Message Cueing (MC)
Ignore Address Bit (IAB)
Power Up (PU)
Play/Record (P/R)
RUN
FIGURE 4: SPI PORT
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ISD4002
6.2.3 SPI Control and Output Registers
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 REGISTERS
Control Bit
Control
Register
C0
Bit
MC
=
=
1
0
Message Cueing function
Enable Message Cueing
Disable Message Cueing
1
0
Ignore Address bit
Ignore input address register (A0-A9)
Use the input address register (A0-A9)
1
0
Power Up bit
Power-Up
Power-Down
1
0
Playback or Record bit
Play
Record
1
0
Enable or Disable an operation
Start
Stop
IAB [4]
C1
=
=
C2
PU
=
=
Device Function
P/ R
C3
=
=
C4
RUN
=
=
Address Bits
A0-A9
Input address register
TABLE 4: SPI OUTPUT REGISTERS
Output Bits
Description
OVF
Overflow
EOM
End-of-Message
P0-P9
Output of the row pointer register
[4] When IAB (Ignore Address Bit) is set to 0, a playback or record operation starts from address (A0-A9). For
consecutive playback or record, IAB should be changed to a 1 before the end of that row (see RAC timing).
Otherwise the ISD4002 will repeat the operation from the same row address. For memory management, the Row
Address Clock (RAC) signal and IAB can be used to move around the memory segments.
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ISD4002
Message Cueing
Message cueing (MC) allows the user to skip through messages, without knowing the actual physical
location of the messages. It will stop when an EOM marker is reached. Then, the internal address
counter will point to the next message. Also, it will enter into OVF condition when it reaches the end of
memory. In this mode, the messages are skipped 1,600 times faster than the normal playback mode.
Power-Up Sequence
The ISD4002 will be ready for an operation after power-up command is sent and followed by the TPUD
timing (25 ms for 8 KHz sampling rate). Refer to the AC timing table for other TPUD values with respect
to different sampling rates.
The following sequences are recommended for optimized Record and Playback operations.
Record Mode
1. Send POWERUP command.
2. Wait TPUD (power-up delay).
3. Send POWERUP command.
4. Wait 2 x TPUD (power-up delay).
5. a). Send SETREC command with address xx, or
b). Send REC command (recording from current location).
6. Send STOP command to stop recording.
7. Wait TSTOP/PAUSE.
For 5.a), the device will start recording at address xx and will generate an interrupt when an overflow
(end of memory array) is reached, if no STOP command is sent before that. Then, it will automatic stop
recording operation.
Playback Mode
1. Send POWERUP command
2. Wait TPUD (power-up delay)
3. a). Send SETPLAY command with address xx, or
b). Send PLAY command (playback from current location).
4. a). Send STOP command to halt the playback operation, or
b). Wait for playback operation to stop automatically, when an EOM or OVF is reached.
5. Wait TSTOP/PAUSE.
For 3.a), the device will start playback at address xx and it will generate an interrupt when an EOM or
OVF is reached. It will then stop playback operation.
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ISD4002
7. TIMING DIAGRAMS
TSSH
SS
TSSmin
TSCKhi
TSSS
SCLK
TDIS
TDIH
TSCKlow
MOSI
TPD
(TRISTATE)
MISO
TPD
TDF
LSB
FIGURE 5: TIMING DIAGRAM
SS
SCLK
LSB
A8
MOSI
A9
X
C0
C1
C2
C3
C4
LSB
MISO
OVF
EOM
P0
P1
P2
P3
P4
P5
FIGURE 6: 8-BIT COMMAND FORMAT
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Rev 1.6
ISD4002
SS
SCLK
LSB
A0
MOSI
A1
A2
LSB
OVF EOM P0
MISO
A3
P1
P2
A4
A5
P3
A6
P4
A7
P5
A8
P6
A9
P7
P8
X
C0
P9
C1
X
C2
X
C3
X
C4
X
≈
≈
≈
≈
≈
≈
≈
≈
≈
≈
MISO
Data
≈
≈ ≈
≈
≈ ≈
≈
Play/Record
Stop
≈ ≈
≈
MOSI
≈ ≈
SCLK
≈ ≈
≈
≈
≈
≈
≈
≈
≈
≈
≈
≈
SS
≈
≈
FIGURE 7: 16-BIT COMMAND FORMAT
Data
TSTOP/PAUSE
ANA IN
≈
(Rec)
TSTOP/PAUSE
ANA OUT
≈
(Play)
FIGURE 8: PLAYBACK/RECORD AND STOP CYCLE
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ISD4002
8. ABSOLUTE MAXIMUM RATINGS
TABLE 5: ABSOLUTE MAXIMUM RATINGS (PACKAGED PARTS)
CONDITIONS
VALUES
Junction temperature
150ºC
Storage temperature range
-65ºC to +150ºC
Voltage applied to any pin
(VSS –0.3V) to (VCC +0.3V)
Voltage applied to any pin (Input current limited to ±20mA)
(VSS –1.0V) to (VCC +1.0V)
Voltage applied to MOSI, SCLK, and SS pins
(VSS –1.0V) to 5.5V
(Input current limited to ±20mA)
Lead temperature (soldering – 10 seconds)
300ºC
VCC – VSS
-0.3V to +7.0V
TABLE 6: ABSOLUTE MAXIMUM RATINGS (DIE)
CONDITIONS
VALUES
Junction temperature
150ºC
Storage temperature range
-65ºC to +150ºC
Voltage applied to any pad
(VSS –0.3V) to (VCC +0.3V)
Voltage applied to any pad (Input current limited to ±20 mA)
(VSS –1.0V) to (VCC +1.0V)
Voltage applied to MOSI, SCLK, and SS pins
(VSS –1.0V) to 5.5V
(Input current limited to ±20mA)
VCC – VSS
-0.3V to +7.0V
Note: 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.
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ISD4002
8.1. OPERATING CONDITIONS
TABLE 7: OPERATING CONDITIONS (PACKAGED PARTS)
CONDITION
VALUE
Commercial operating temperature range (Case temperature)
0ºC to +70ºC
Industrial operating temperature (Case temperature)
-40ºC to +85ºC
Supply voltage (VCC) [1]
+2.7V to +3.3V
Ground voltage (VSS) [2]
0V
TABLE 8: OPERATING CONDITIONS (DIE)
CONDITION
Commercial operating temperature range
Supply voltage (VCC)
[1]
[2]
0ºC to +50ºC
+2.7V to +3.3V
Ground voltage (VSS) [2]
[1]
VALUE
0V
VCC = VCCA = VCCD
VSS = VSSA = VSSD
Jun 28, 2021
Page 19 of 33
Rev 1.6
ISD4002
9. ELECTRICAL CHARACTERISTICS
9.1. PARAMETERS FOR PACKAGED PARTS
TABLE 9: DC PARAMETERS
PARAMETER
SYMBOL
MIN[2]
TYP[1]
MAX[2]
UNITS
VCC x 0.2
V
CONDITIONS
Input Low Voltage
VIL
Input High Voltage
VIH
Output Low Voltage
VOL
0.4
V
IOL = 10 µA
RAC, INT Output Low Voltage
VOL1
0.4
V
IOL = 1 mA
Output High Voltage
VOH
V
IOH = -10 µA
VCC Current (Operating)
- Playback
- Record
ICC
VCC Current (Standby)
ISB
Input Leakage Current
IIL
MISO Tristate Current
IHZ
Output Load Impedance
REXT
ANA IN+ Input Resistance
RANA IN+
2.2
3.0
3.8
KΩ
ANA IN- Input Resistance
RANA IN-
40
56
71
KΩ
ANA IN+ or ANA IN- to AUD
OUT Gain
AARP
20
23
26
dB
VCC x 0.8
V
VCC x 0.4
15
25
30
40
mA
mA
REXT = ∞ [3]
REXT = ∞ [3]
1
10
µA
[3] [4]
±1
µA
10
µA
1
KΩ
5
1 KHz
sinewave input
[5]
Notes:
[1]
Typical values @ TA = 25°C and VCC = 3.0V.
[2]
All Min/Max limits are guaranteed by Nuvoton via electronical testing or characterization. Not all
specifications are 100 percent tested.
[3]
VCCA and VCCD connected together.
[4]
SS = VCCA = VCCD, XCLK = MOSI = VSSA = VSSA and all other pins floating.
[5]
Measured with AutoMute feature disabled.
Jun 28, 2021
Page 20 of 33
Rev 1.6
ISD4002
TABLE 10: AC PARAMETERS (Packaged Parts)
CHARACTERISTIC
SYMBOL
Sampling Frequency
ISD4002-120
ISD4002-150
ISD4002-180
ISD4002-240
Filter Pass Band
ISD4002-120
ISD4002-150
ISD4002-180
ISD4002-240
Record Duration
ISD4002-120
ISD4002-150
ISD4002-180
ISD4002-240
Playback Duration
ISD4002-120
ISD4002-150
ISD4002-180
ISD4002-240
Power-Up Delay
ISD4002-120
ISD4002-150
ISD4002-180
ISD4002-240
Stop or Pause in Record or Play
ISD4002-120
ISD4002-150
ISD4002-180
ISD4002-240
RAC Clock Period
ISD4002-120
ISD4002-150
ISD4002-180
ISD4002-240
RAC Clock Low Time
ISD4002-120
ISD4002-150
ISD4002-180
ISD4002-240
RAC Clock Period in Message
Cueing Mode
ISD4002-120
ISD4002-150
ISD4002-180
ISD4002-240
RAC Clock Low Time in
Message Cueing Mode
ISD4002-120
ISD4002-150
ISD4002-180
ISD4002-240
Total Harmonic Distortion
FS
ANA IN Input Voltage
Jun 28, 2021
FCF
TREC
TPLAY
TPUD
TSTOP
or
TPAUSE
TRAC
TRACL
MIN[2]
TYP[1]
MAX[2]
UNITS
CONDITIONS
[5]
8.0
6.4
5.3
4.0
KHz
KHz
KHz
KHz
3.4
2.7
2.3
1.7
KHz
KHz
KHz
KHz
120
150
180
240
sec
sec
sec
sec
[6]
120
150
180
240
sec
sec
sec
sec
[6]
25
31.25
37.5
50
msec
msec
msec
msec
50
62.5
75
100
msec
msec
msec
msec
200
250
300
400
msec
msec
msec
msec
25
31.25
37.5
50
msec
msec
msec
msec
125
156.3
187.5
250
µsec
µsec
µsec
µsec
15.63
19.53
23.44
31.25
1
2
µsec
µsec
µsec
µsec
%
@ 1 KHz sinewave
32
mV
Peak-to-Peak [4] [8] [9]
[5]
[5]
[5]
3 dB Roll-Off
Point[3][7]
[6]
[6]
[6]
[6]
[6]
[6]
[10]
[10]
[10]
[10]
TRACM
TRACML
THD
VIN
Page 21 of 33
Rev 1.6
ISD4002
Notes:
[1]
Typical values @ TA = 25°C, VCC = 3.0V and timing measurement at 50%.
[2]
All Min/Max limits are guaranteed by Nuvoton via electrical testing or characterization. Not all
specifications are 100 percent tested.
[3]
Low-frequency cutoff 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
mVp-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 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 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 6 dB drop by nature of passing through both filters.
[8]
The typical output voltage will be approximately 450 mVp-p with VIN at 32 mVp-p.
[9]
For optimal signal quality, this maximum limit is recommended.
[10] When a record command is sent, T
RAC = TRAC + TRACL on the first row address.
9.2. PARAMETERS FOR DIE
TABLE 11: DC PARAMETERS
PARAMETERS [6]
SYMBOL
VCC Current (Operating)
-Playback
-Record
ICC
VCC Current (Standby)
Total Harmonic Distortion
ANA IN+ or ANA IN- to AUD
OUT Gain
ISB
THD
AARP
MIN[2]
20
TYP[1]
MAX[2]
UNITS
15
25
30
40
mA
mA
REXT = ∞ [3]
REXT = ∞ [3]
1
1
23
10
2
26
µA
%
dB
[3] [4]
CONDITIONS
@ 1 KHz sinewave
[5]
Notes:
[1]
[2]
[3]
Typical values @ TA = 25°C and VCC = 3.0V.
All Min/Max limits are guaranteed by Nuvoton via electrical testing or characterization. Not all
specifications are 100 percent tested.
VCCA and VCCD connected together.
[4]
SS = VCCA = VCCD, XCLK = MOSI = VSSA = VSSA and all other pins floating.
[5]
Measured with AutoMute feature disabled.
The test coverage for die is limited to room temperature testing. The test conditions may differ from that
of packaged parts.
[6]
Jun 28, 2021
Page 22 of 33
Rev 1.6
ISD4002
9.3. SPI AC PARAMETERS
TABLE 12: AC PARAMETERS[1]
PARAMETER
SYMBOL
MIN
TSSS
500
nsec
TSSH
500
nsec
Data in Setup Time
TDIS
200
nsec
Data in Hold Time
TDIH
200
nsec
SS Setup Time
SS Hold Time
Output Delay
Output Delay to HighZ
[2]
TYP
MAX
UNITS
TPD
500
nsec
TDF
500
nsec
TSSmin
1
µsec
SCLK High Time
TSCKhi
400
nsec
SCLK Low Time
TSCKlow
400
nsec
CLK Frequency
F0
SS HIGH
1,000
CONDITIONS
KHz
Notes:
[1]
Typical values @ TA = 25°C, VCC = 3.0V and timing measurement at 50%.
[2]
Tri-state test condition.
VCC
6.32KΩ
MISO
10.91KΩ
50pF (Includes scope and fixture capacitance)
Jun 28, 2021
Page 23 of 33
Rev 1.6
ISD4002
10. TYPICAL APPLICATION CIRCUIT
These application examples are for illustration purposes only. Nuvoton makes no
representation or warranty that such application will be suitable for production. Make
sure all bypass capacitors are as close as possible to the package.
C9
15-30 pF
C8
15-25 pF
VCC
U2
R7
10 K Ω
39
OCS1
38
OCS2
1
RESET
2
IRQ
37
35
29
MISO
VCCD
27
VSSD
4
PD1/TD0
30
2
MOSI
31
28
SCLK
PD3/MOSI
32
1
PD4/SCK
33
PD5/SS
34
TCMP
68HC705C8P
R5
47 K Ω
3
PD2/MISO
TCAP
R6
47 K Ω
U1
PD0/RDI
PC0
28
PC1
27
PC2
26
PC3
25
PC4
24
PC5
23
PC6
22
PC7
C1
47 µ F
SS
VCCA
C11
0.1 µF
16
ANA IN-
C12
0.1 µ F
ANA IN+
21
24
RAC
PB0
12
25
INT
26
XCLK
PB1
13
PA0
PB2
14
10
PA1
PB3
15
9
PA2
PB4
16
8
PA3
PB5
17
7
PA4
PB6
18
6
PA5
PB7
19
5
PA6
4
PA7
18
VSSA
23
VSSA
12
VSSA
11
AUD OUT
13
C3 0.22µ F
C4
1 µF
3
ISD4002
17
11
C2 0.22µ F
J1
4
5
LINE OUT
1
R2
1M
R1
10K
AM CAP
14
R3 100
R4
100K POT
1
C5
1µ F
3
2
U3
PDIP / SOIC
C6
1µ F
13
-IN
14
+IN
5
BYPASS
6
7
HP-IN1
HP-IN2
3
HPSENSE
2
SHUTDOWN
GAIN-OUT
11
V01
10
V02
15
PD7
VDD
12
GND
GND
GND
GND
GND
1
4
8
9
16
3
2
4
5
J4
EXT
SPEAKER
1
C7
.1µ F
LM4860M
FIGURE 9: APPLICATION EXAMPLE USING SPI
Jun 28, 2021
Page 24 of 33
Rev 1.6
ISD4002
VCC
U1
U2
8
19
1
VSS
VSS
3
MISO
VCCD
27
RC4
15
2
MOSI
VSSD
4
RC5
16
28
SCLK
RC3
14
1
RA5
7
C1
47 µ F
SS
VCCA
MCLR
RB0
21
C9
0.1 µ F
16
ANA IN-
PIC16C62A
20
C2 0.22µ F
18
VSSA
23
VSSA
12
VSSA
11
AUD OUT
13
C3 0.22µ F
C4
1 µF
3
VDD
C8
0.1 µF
17
ANA IN+
24
RAC
5
R1
10K
R3 100
9
11
25
OSC1
26
C10
R6
4.7 K Ω
R5
4.7 K Ω
AM CAP
14
INT
R4
100K POT
1
C5
1µ F
XCLK
C6
1µ F
PDIP / SOIC
3
2
U3
13
-IN
14
+IN
5
BYPASS
6
7
HP-IN1
HP-IN2
3
HPSENSE
2
SHUTDOWN
LINE OUT
1
R2
1M
R7
RC0
J1
4
ISD4002
GAIN-OUT
11
V01
10
V02
15
VDD
12
GND
GND
GND
GND
GND
1
4
8
9
16
3
2
4
5
J4
EXT
SPEAKER
1
C7
.1µ F
LM4860M
FIGURE 10: APPLICATION EXAMPLE USING MICROWIRE
Jun 28, 2021
Page 25 of 33
Rev 1.6
ISD4002
VCC
U2
23
24
GND
RESET
D3
22
3
MISO
VCCD
27
D2
21
2
MOSI
VSSD
4
D1
20
28
SCLK
D0
19
1
G3
28
G2
27
VCCA
26
VSSA
23
INT
25
VSSA
12
SI
3
VSSA
11
AUD OUT
13
G1
COP 820C
6
VCC
R7
3.3 K Ω
5
C10
82 pF
CLI
U1
SK
2
G7
4
SO
1
L7
18
L6
17
L5
16
L4
15
7
10
L3
14
8
11
L2
13
9
12
L1
12
10
13
L0
11
C9
0.1 µ F
16
C2 0.22µ F
C1
47µ F
SS
ANA IN-
18
C3 0.22µ F
C4
1 µF
3
J1
4
ISD4002
C8
0.1 µF
17
ANA IN+
24
RAC
25
26
R6
4.7 K Ω
R5
4.7 K Ω
5
LINE OUT
1
R1
10K
AM CAP
R2
1M
R3 100
14
C5
1µ F
INT
XCLK
C6
1µ F
PDIP / SOIC
R4
100K POT
1
3
2
U3
13
-IN
14
+IN
5
BYPASS
6
7
HP-IN1
HP-IN2
3
HPSENSE
2
SHUTDOWN
GAIN-OUT
11
V01
10
V02
15
VDD
12
GND
GND
GND
GND
GND
1
4
8
9
16
3
J4
2
4
5
1
C7
.1µ F
LM4860M
FIGURE 11: APPLICATION EXAMPLE USING SPI PORT ON
MICROCONTROLLER
Jun 28, 2021
Page 26 of 33
Rev 1.6
EXT
SPEAKER
ISD4002
11. PACKAGING AND DIE INFORMATION
11.1.
28-LEAD 300-MIL PLASTIC SMALL OUTLINE IC (SOIC)
28 27 26 25 24 23 22 21 20 19 18 17 16 15
1
2 3 4 5
6 7 8 9 10 11 12 13 14
A
G
C
B
D
E
H
F
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
Note: Lead coplanarity to be within 0.004 inches.
Jun 28, 2021
Page 27 of 33
Rev 1.6
ISD4002
11.2.
28-LEAD 600-MIL PLASTIC DUAL INLINE PACKAGE (PDIP)
INCHES
A
MILLIMETERS
Min
Nom
Max
Min
Nom
Max
1.445
1.450
1.455
36.70
36.83
36.96
B1
0.150
B2
0.065
C1
0.600
C2
0.530
0.070
0.540
D
3.81
0.075
1.65
0.625
15.24
0.550
13.46
1.78
15.88
13.72
0.19
D1
0.015
E
0.125
F
0.015
G
0.055
H
1.91
13.97
4.83
0.38
0.135
3.18
0.018
0.022
0.38
0.46
0.56
0.060
0.065
1.40
1.52
1.62
0.100
3.43
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
0°
15°
0°
Jun 28, 2021
Page 28 of 33
15°
Rev 1.6
ISD4002
11.3.
DIE INFORMATION
ISD4002 Series
o Die Dimensions [1]
X: 166.6 ± 1 mils
Y: 222.5 ± 1 mils
VSSD
MOSI
MISO
SCLK VCCD
INT
VCCD XCLK
SS
VSSD
≈
o Die Thickness [2]
11.5 ± 0.5 mils
RAC
VSSA
ISD4002
≈
o Pad Opening
Single pad opening: 90 x 90 µm
Double pad opening: 180 x 90 µm
VSSA[3]
VSSA
VSSA[3]
[3]
AUD OUT
ANA IN- VCCA
[3]
AM CAP
ANA IN+ VCCA
Notes:
[1]
The backside of die is internally connected to VSS. It MUST NOT be connected to any other potential or
damage may occur.
[2]
Die thickness is subject to change, please contact Nuvoton as this thickness may change in the future.
[3]
Double bond is recommended if treated as one single pad.
Jun 28, 2021
Page 29 of 33
Rev 1.6
ISD4002
ISD4002 SERIES PAD COORDINATIONS
(with respect to die center)
Pad
Pad Description
X Axis (µm)
Y Axis (µm)
VSSA
Analog Ground
1885.7
2606.7
RAC
Row Address Clock
1483.8
2606.7
INT
Interrupt
794.8
2606.7
XCLK
External Clock Input
564.8
2606.7
VCCD
Digital Power Supply
384.9
2606.7
VCCD
Digital Power Supply
169.5
2606.7
SCLK
Slave Clock
-14.7
2606.7
Slave Select
-198.1
2606.7
MOSI
Master Out Slave In
-1063.7
2606.7
MISO
Master In Slave Out
-1325.6
2606.7
VSSD
Digital Ground
-1665.3
2606.7
SS
VSSD
Digital Ground
-1836.9
2606.7
VSSA
[1]
Analog Ground
-1943.1
-2607.4
VSSA
[1]
Analog Ground
-1853.1
-2607.4
VSSA
Analog Ground
-1599.9
-2607.4
AUD OUT
Audio Output
281.9
-2607.4
AM CAP
AutoMute
577.3
-2607.4
ANA IN-
Inverting Analog Input
1449.3
-2607.4
ANA IN+
Noninverting Analog Input
1603.5
-2607.4
VCCA [1]
Analog Power Supply
1853.5
-2607.4
VCCA [1]
Analog Power Supply
1943.8
-2607.4
Note:
[1]
Jun 28, 2021
Double bond recommended if treated as one pad.
Page 30 of 33
Rev 1.6
ISD4002
12. ORDERING INFORMATION
Jun 28, 2021
Page 31 of 33
Rev 1.6
ISD4002
13. REVISION HISTORY
VERSION
DATE
DESCRIPTION
1.0
Sep, 2003
Reformat the document.
Add note for typical filter pass band.
Add memory architecture description.
Remove all CSP info.
Revise RAC timing parameter for MC.
Revise AutoMute: playback only.
Revise SPI, opcodes sections, record & playback steps.
Rename TRACLO to TRACL.
Revise AARP parameter.
Revise DC & AC parameters tables for die.
Revise die information: pad opening and (x,y) coordinates.
Figures 9-11: revise VCCA and VCCD pin #.
1.1
Mar, 2005
Add lead-free parts.
Revise AM CAP name in block diagram.
Update table no. for AC parameter.
Revise the Ordering information.
Revise disclaim section.
1.2
Apr, 2005
Standardize disclaim section.
1.3
Oct, 2005
Revise Packaging information.
1.4
Oct 16, 2008
Remove the leaded package option
Remove the extended temperature option
Update the external clock description
Revise Ordering Information section
Change Logo
MISO is not open drain
1.5
May 21, 2020
Update Document Format
Remove TSOP Support
1.6
Jun 28, 2021
Update Ordering Information
Jun 28, 2021
Page 32 of 33
Rev 1.6
ISD4002
Important Notice
Nuvoton Products are neither intended nor warranted for usage in systems or equipment, any
malfunction or failure of which may cause loss of human life, bodily injury or severe property
damage. Such applications are deemed, “Insecure Usage”.
Insecure usage includes, but is not limited to: equipment for surgical implementation, atomic
energy control instruments, airplane or spaceship instruments, the control or operation of
dynamic, brake or safety systems designed for vehicular use, traffic signal instruments, all types
of safety devices, and other applications intended to support or sustain life.
All Insecure Usage shall be made at customer’s risk, and in the event that third parties lay claims
to Nuvoton as a result of customer’s Insecure Usage, customer shall indemnify the damages and
liabilities thus incurred by Nuvoton.
Jun 28, 2021
Page 33 of 33
Rev 1.6
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