ISD14B20 ISD14B20 SINGLE-CHIP, MULTIPLE-MESSAGE VOICE RECORD/PLAYBACK DEVICE 10.
ISD14B20 TABLE OF CONTENTS 1. GENERAL DESCRIPTION ............................................................................................................... 3 2. FEATURES ....................................................................................................................................... 3 3. BLOCK DIAGRAM ............................................................................................................................ 5 4. PAD DESCRIPTION ...................................
ISD14B20 1. GENERAL DESCRIPTION Winbond’s ISD14B20 ChipCorder® is a new single-chip multiple-message record/playback series with dual operating modes (address trigger and direct trigger) with wide operating voltage ranging from 2.4V to 5.5V. The sampling frequency can be selected from 4 to 12 kHz via an external resistor, which also determines the duration from 10.6 to 32 seconds.
ISD14B20 2.1. Address trigger operational mode • While in NORM mode, flexible message duration is defined by start address and end address. • Utilize four start addresses ( S0 , S1 , S2 & S3 ) and four end addresses ( E0 , E1 , E2 & E3 ) to specific the message duration. 2.2. • REC • PLAYE : Edge-trigger playback from start to end addresses and stops at EOM marker, if EOM is prior to end address. Toggle on-off. • PLAYL : Level-hold playback from start to end addresses.
ISD14B20 3.
ISD14B20 4. PAD DESCRIPTION PAD NAME VSSD S0 / M1 I/O I I FUNCTION Digital Ground: Ground path for digital circuits. [1] S0 : In Norm mode, Start Address Bit 0. M1 : When MODE S1 / M2 I is active, low active operation on 1st Message. Internal pull-up & debounce existed. [1] S1 : In Norm mode, Start Address Bit 1. M2 : When MODE S2 / M3 I & debounce existed. [1] S2 : In Norm mode, Start Address Bit 2. M3 : When MODE S3 / M4 I is active, low active operation on 2nd Message.
ISD14B20 PAD NAME MIC- I/O I FUNCTION Rosc I VCCA LED I O PLAYE / FMC2 I PLAYE : In Norm mode, low active input, edge-trigger playback from start to end addresses & toggle on-off. Debounce & internal pull-up existed. FMC2 : When MODE is active, FMC2 , together with FMC1 & FMC3 , setup various fixed-message configurations. REC / R/P I REC : In Norm mode, level-hold (after 1 sec holding) or edge-trigger (toggle on-off), low active, recording from start to end addresses.
ISD14B20 5. FUNCTIONAL DESCRIPTION There are two operational modes: address trigger ( NORM ) and direct trigger ( MODE ). After a new condition is selected on NORM / MODE , the power must be cycled to enable it. 5.1. ADDRESS TRIGGER ( NORM ) OPERATION The start address bits ( S0 , S1 , S2 & S3 ) and end address bits ( E0 , E1 , E2 & E3 ) are used to access the memory location and they can divide the memory into a maximum of 16 slots.
ISD14B20 Fig. 1: Record–Level ( REC ) function till end address Norm/Mode TASet TAHold REC TDeb LED TStop1 Mic+/or AnaIn End Address Fig. 2: Record–Level ( REC ) function with start and stop actions Norm/Mode TAHold TASet REC Start TDeb TASet TAHold Start Stop TDeb TSettle1 TDeb LED TStop1 Mic+/or AnaIn End Address Fig.
ISD14B20 5.1.2. Edge-triggered Playback ( PlayE ) Operation • • Low active input, edge-trigger, toggle on-off, debounce required. Playback begins from the start address to end address or EOM, whichever is occurred first. • • • At the end of message, LED pulses Low momentarily. Then device will automatically power down. During playback, a subsequent trigger terminates the playback operation. If EOM marker is not encountered, then LED will not pulses Low momentarily.
ISD14B20 Norm/Mode TASet TAHold PlayL Start TDeb TDeb TAHold TASet Start Stop TSettle2 LED TEOM TDeb Part of Message End of Message Sp+ Sp- • However, holding PlayL Low constantly will perform looping playback function, without power down, from start address to end address. Fig. 6: Looping playback function via PlayL Norm/Mode TASet TAHold PlayL TDeb TEOM TEOM LED Sp+ Sp- 5.1.4.
ISD14B20 Norm/Mode TAHold TASet REC TEOM TDeb LED Mic+/or AnaIn TSettle1 TSettle3 PlayE TDeb SP+ SP- 5.1.5. XCLK Feature • When precision sampling frequency is required, external clock mode can be activated by setting XCLK to Low. Under such condition, the resistor at Rosc pin must be removed and the external clock signal must be applied to the Rosc pin. These conditions must be satisfied prior to any operations.
ISD14B20 [2] [3] 0 1 1 4 1 0 0 5 1 0 1 6 1 1 0 7 1 1 1 8 : Number of memory row arrangement with respect to different number of fixed messages for ISD14B20 (128 Rows). The non-configured Message control pins (Mx) will be disabled.
ISD14B20 Example of four Fixed-Message Configuration: Fig. 8: Record Operation under FMC mode Norm/Mode FM3 FM2 FM1 TFSet R/P Stop M1 ~ M4 Start TDeb TSettle1 Start TDeb LED TStop1 TDeb End of Duration Mic+/or AnaIn Fig. 9: Playback Operation under FMC mode Norm/Mode FM3 FM2 FM1 R/P TFSet Start Stop Start M1 ~ M4 LED TEOM TDeb TDeb TSettle2 TDeb End of Message Sp+ Sp- 5.3. OTHER OPERATIONS 5.3.1. Rosc Operation • When the ROSC varies from 53.
ISD14B20 • • • When ROSC resistor value is changed during playback, the tone of a recorded message will alter either faster or slower. If the ground side of ROSC resistor is floated or tied to VCC, then the current operation will be freezed. The operation will resume when the resistor is connected back to ground. 5.3.2. LED Operation • LED turns on during recording. Also, LED pulses Low at the end of message. The Low period must be sufficiently greater than debounce time. 5.3.3.
ISD14B20 6. ABSOLUTE MAXIMUM RATINGS [1] ABSOLUTE MAXIMUM RATINGS 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.
ISD14B20 7. ELECTRICAL CHARACTERISTICS 7.1. DC PARAMETERS PARAMETER Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage Standby Current Record Current Playback Current Pull-up device for REC , PlayE , SYMBOL MIN[2] VIL VIH 0.7xVcc VOL VOH 0.7xVcc ISTBY IREC IPLAY RPU1 TYP[1] MAX[2] 0.3xVcc 0.3xVcc 1 20 20 600 10 30 30 UNITS V V V V µA mA mA kΩ CONDITIONS IOL = 4.0 mA[3] IOH = -1.6 mA[3] [4] [5] VCC = 5.5V [4] [5] VCC = 5.
ISD14B20 7.2. AC PARAMETERS CHARACTERISTIC [1] SYMBOL MIN[2] Sampling Frequency Record Duration Playback Duration Debounce Time Fs TREC TPLAY TDeb Address Setup Time Address Hold Time TASet TAHold FMC Setup Time Record Settle Time Play Settle Time TFSet TSettle1 TSettle2 4 10.6 10.
ISD14B20 8. TYPICAL APPLICATION CIRCUIT The following typical application examples on ISD14B20 series are for references only. They make no representation or warranty that such applications shall be suitable for the use specified. It’s customer’s obligation to verify the design in its own system for the functionalities, voice quality, current consumption, and etc. In addition, the below notes apply to the following application examples: * The suggested values are for references only.
ISD14B20 Example #2: Fixed Message Configuration Operations under direct trigger mode ( MODE ) VCC 1 kΩ R/P LED M1 MODE FMC3 M2 M3 FMC2 M4 FMC1 M5 VCCD M6 VCC M8 4.7 k Ω∗ ISD14B20 4.7μ F* 4.7 k Ω∗ FT 0.1 μ F* Mic+_AnaIn 0.1 μ F* 4.7 kΩ∗ 4.7 μ F* Rosc* MicAGC Rosc Vcc VCCD 0.1μ F 10 μ F* VCCA VCCA 0.1μ F 10 μ F VSSA VCCP VSSP1 Gnd VCCA VCCD VCCP VSSD M7 D1 VCCP 0.1μ F 10 μ F* 10 μ F* 0.
ISD14B20 9. PACKAGING 9.1 DIE INFORMATION S1 / M2 S0 / M1 VSSD VCCD Norm / MODE FT XCLK / FMC3 S2 / M3 REC / R/P S3 / M4 PLAYE / FMC2 PLAYL / FMC1 LED E0 / M5 ISD14B20 VSSA VCCA E1 / M6 Rosc VCCA E2 / M7 Mic- E3 / M8 VSSP2 SP- VCCP SP+ VSSP1 AGC Mic+_AnaIn Contact Winbond Sales Representatives for other information.
ISD14B20 10. ORDERING INFORMATION Product Number Descriptor Key I14Bxxxx Product Name: I = ISD Product Series: 14B = 14B00 Duration: 20 : 10.6 – 32 secs Temperature: Blank = Commercial • Die (0°C to +50°C) Package Type: X = Die When ordering ISD14B20 devices, please refer to the above ordering scheme. Contact the local Winbond Sales Representatives for any questions and the availability.
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ISD14B20 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.
