ADVANCED ISD18B12 SINGLE-CHIP, SINGLE-MESSAGE VOICE RECORD/PLAYBACK DEVICE 6- TO 12-SECONDS DURATION -1- Publication Release Date: August 17, 2007 Revision A1
ISD18B12 TABLE OF CONTENTS 1. GENERAL DESCRIPTION ............................................................................................................... 3 2. FEATURES ....................................................................................................................................... 3 3. BLOCK DIAGRAM ........................................................................................................................... 4 4. PAD DESCRIPTION ....................................
ISD18B12 1. GENERAL DESCRIPTION Winbond’s ISD18B12 ChipCorder® is a new single-chip single-message record/playback device with a special TryMe feature. The user-selectable duration is from 6 to 12 seconds, with wide operating voltage ranging from 2.4V to 5.5V. Its sampling frequency, ranging from 4kHz to 8kHz, is externally controlled via resistor at Rosc pin. This device also includes microphone amplifier, anti-aliasing filter, multilevel storage array, smoothing filter and speaker amplifier.
ISD18B12 3.
ISD18B12 4. PAD DESCRIPTION PAD NAME I/O FUNCTION VSSD I Digital Ground: Ground path for digital circuits. RECL I Level-Triggered Record: Low active input, Level-hold. PLAYE I Edge-Triggered Playback: Low active input, Edge-trigger, toggle on-off. PLAYL I Level-Triggered Playback: Low active input, Level-hold. RECE I Edge-Triggered Record: Low active input, Edge-trigger, toggle on-off.
ISD18B12 5. FUNCTIONAL DESCRIPTION For the following related operations, if SE is not enabled, then no beep sound is heard. Also, the timing diagrams may not be in direct proportional scale. 5.1. Level-triggered Record ( RECL ) Operation : • Recording starts from beginning of the memory and LEDR is on. • Recording ceases whenever RECL returns to High or when end of memory is reached and LEDR is off. Then device will automatically power down. • Fig.
ISD18B12 5.3. Edge-triggered playback ( PLAYE ) Operation : • Playback starts from beginning of the memory and LEDP is on. • • Playback stops whenever end of message or a subsequent trigger occurs and LEDP is off. Then device will automatically power down. Fig. 3 : Playback–Edge ( PLAYE ) function Tr Tf Start PlayE TDeb Start Stop TDeb TDeb LEDP End of Message SP+ SP- TP1 TP1 LEDR 5.4.
ISD18B12 Tr PlayL TDeb LEDP TD2 TD2 SP+ SPLEDR 5.5. Sound Effect ( SE ) Operation : • Beeping feature for recording. Once active, one-beep indicates the start of recording and two-beep represents the end of recording. 5.6. Microphone amplifier gain • Two external resistors, RI and RO, are used to adjust the microphone amplifier gain with respect to the incoming signal. 5.7. Playback (supersedes Record) Operation : • Playback takes precedence over the Recording operation.
ISD18B12 5.13. TryMe Special Operation : This is a special feature. When TryMe is High, TryMe is active. When TryMe is Low, TryMe is disabled. The enabling and disabling of this feature is merely permitted while the device is in power down status. Once TryMe is set, trigger on either RECL or RECE will initiate the TryMe operation sequence.
ISD18B12 Tr Tf TM Illegal state RECL TDeb LEDR TB2 TB1 BEEP TP1 (Optional) MicIn TD1 LEDP PLAYE or PLAYL Illegal state SP+ SP- 5.14. Power interruption • Any power interruption during an operation is strongly not recommended. If happened, it may result the device becoming malfunction. 5.15. Power-On to Playback Operation : • If PLAYE or PLAYL is held at Low during power turns on, the device plays message accordingly with respect to which play control being employed. 5.16.
ISD18B12 6. ABSOLUTE MAXIMUM RATINGS ABSOLUTE MAXIMUM RATINGS [1] CONDITION VALUE Junction temperature 150°C Storage temperature range -65°C to +150°C Voltage applied to any pins (VSS – 0.3V) to (VCC + 0.3V) Voltage applied to Input pins (current limited to +/-20 mA) (VSS – 1.0V) to (VCC + 1.0V) Voltage applied to output pins (current limited to +/-20 mA) (VSS – 1.0V) to (VCC + 1.0V) VCC – VSS -0.3V to +7.0V [1] Stresses above those listed may cause permanent damage to the device.
ISD18B12 7. ELECTRICAL CHARACTERISTICS 7.1. DC PARAMETERS PARAMETER SYMBOL Input Low Voltage VIL Input High Voltage VIH Output Low Voltage VOL Output High Voltage VOH Standby Current ISTBY Record Current Playback Current Pull-up device for RECL , MIN[2] TYP[1] MAX[2] UNITS 0.3xVcc V 0.7xVcc CONDITIONS V 0.3xVcc 0.7xVcc V IOL = 4.0 mA[3] V IOH = -1.6 mA[3] 10 µA [4] [5] IREC 15 mA VCC = 5.5V IPLAY 15 mA VCC = 5.
ISD18B12 7.2.
ISD18B12 8. TYPICAL APPLICATION CIRCUIT The following typical application examples on ISD18B12 series are for references only. They make no representation or warranty that such applications shall be suitable for the use specified. Each design has to be optimized in its own system for the best performance on voice quality, current consumption, functionalities and etc. It’s customer’s obligation to confirm the design on all the functionalities of their end-products.
ISD18B12 Example #2: TryMe feature VCCD 1 KΩ LEDR 0.1 VSSD 1 KΩ LEDP µF 10 µ F* VCCA Vcc 0.1 VSSA µF 1k Ω∗ PLAYL PLAYE RECE I18B12 SPSP+ Speaker 500k Ω∗ MICOUT 10k Ω∗ RECE 10kΩ∗ 0.1 µ F* 10 µ F* MICIN RECL Vcc RECL 80 K Ω∗ FT ROSC ELECTRET MICROPHONE TryMe SE Beeping (Optional) LEDR Good Audio Design Practices Winbond’s ChipCorder are very high-quality single-chip voice recording and playback devices.
ISD18B12 9. DIE INFORMATION PLAYL PLAYE RECL VSSD LEDR VCCD SE LEDP RECE TryMe ISD18B12 FT MICIN MICOUT SP- VSSA SP + VCCA Contact Winbond Sales Representatives for information.
ISD18B12 10. ORDERING INFORMATION Product Number Descriptor Key ISD18Bxxxx ISD18B Series Duration: 12 = 6- to 12-second Temperature: Blank = Commercial • Die (0°C to +50°C) Package Type: X = Die When ordering, please refer to the following part numbers that are supported in volume for this product series. Consult the local Winbond Sales Representative or Distributor for availability information.
ISD18B12 11.
ISD18B12 Winbond products are not designed, intended, authorized or warranted for use as components in systems or equipment intended for surgical implantation, atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, or for other applications intended to support or sustain life.