Nuvoton - ISD1900 Series ChipCorder Page 1 of 3 REG News & Events ISD1900 Series ChipCorder Nuvoton?s ISD1900 ChipCorder? is the newest single-chip multiple-message record/playback series Related li with dual operating modes (address trigger and direct trigger) and wider 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. These ICs are designed mostly for standalone applications, and of course, it can be used in conjunction with a microcontroller, if necessary. The two operating modes are address trigger and direct trigger. While in address trigger mode, both record and playback operations are manipulated according to the start address and end address Block Diagram Application Dia Product Selecti Datasheet How to Buy specified through the start address and end address pins. However, in direct trigger mode, the device can configure the memory up to as many as eight equal messages, pending upon the fixed message configuration settings. With the record or playback feature being pre-selected, each message can be randomly accessed via its message control pin. The device has a selectable differential microphone input with AGC feature or single-ended analog input, AnaIn, under feed-through mode. Its differential Class D PWM speaker driver can directly drive a typical speaker or buzzer. Block Diagram http://www.nuvoton-usa.com/en/content/view/360/2162/ 10/29/2008 Nuvoton - ISD1900 Series ChipCorder Page 2 of 3 Application Diagram Features Wider operating voltage from 2.4 to 5.5V Higher sampling frequency from 4kHz to 12kHz FT: converts MIC+ to ANAIN & feeds it to the speakers R/P: record/playback switch REC: level or edge recording PLAYE : edge-trigger, toggle on/off PLAYL : level playback or looping playback LED : LED output for recording NORM (Address Trigger): variable message duration http://www.nuvoton-usa.com/en/content/view/360/2162/ 10/29/2008 Nuvoton - ISD1900 Series ChipCorder Page 3 of 3 MODE: (Direct Trigger): fixed message duration Product Selection Guide Part Duration Number Sample Package Rate Evalu Sy ISD1916 10.6 - 32 sec. 4.0 / 5.3/ 6.4 / 8.0 / 12.0 SOIC ISD- ISD1932 21.2 - 64 sec. 4.0 / 5.3/ 6.4 / 8.0 / 12.0 SOIC ISD- ISD1964 42.4 - 128 sec. 4.0 / 5.3/ 6.4 / 8.0 / 12.0 SOIC ISD- Legal Terms and Conditions | Privacy Statement | Contact Us (c)2008 Nuvoton Technology Corporation America - All Rights Reserv http://www.nuvoton-usa.com/en/content/view/360/2162/ 10/29/2008