apr33a1 / apr33a2 / apr33a3 Datasheet
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1 apr33a1 / apr33a2 / apr33a3 Fixed 1/ 2/ 4/ 8 Message Mode (C2.0) Datasheet Recording voice IC APLUS INTEGRATED CIRCUITS INC. Address: 3 F-10, No. 32, Sec. 1, Chenggung Rd., Taipei, Taiwan 115, R.O.C. TEL: FAX: WEBSITE : Technology service@aplusinc.com.tw Sales sales@aplusinc.com.tw Ver. B 1/24 1/17/2013
2 FEATURES Operating Voltage Range: 3V ~ 6.5V Single Chip, High Quality Audio/Voice Recording & Playback Solution No External ICs Required Minimum External Components User Friendly, Easy to Use Operation Programming & Development Systems Not Required 170/ 340/ 680 sec. Voice Recording Length in Powerful 16-Bits Digital Audio Processor. Nonvolatile Flash Memory Technology No Battery Backup Required External Reset pin. Powerful Power Management Unit Very Low Standby Current: 1uA Low Power-Down Current: 15uA Supports Power-Down Mode for Power Saving Built-in Audio-Recording Microphone Amplifier No External OPAMP or BJT Required Easy to PCB layout Configurable analog interface Differential-ended MIC pre-amp for Low Noise High Quality Line Receiver High Quality Analog to Digital and PWM module Resolution up to 16-bits Simple And Direct User Interface Averagely 1,2,4 or 8 voice messages record & playback Ver. B 2/24 1/17/2013
3 DESCRIPTION Today s consumers demand the best in audio/voice. They want crystal-clear sound wherever they are in whatever format they want to use. APLUS delivers the technology to enhance a listener s audio/voice experience. The apr33a series are powerful audio processor along with high performance audio analog-to-digital converters (ADCs) and digital-to-analog converters (DACs). The apr33a series are a fully integrated solution offering high performance and unparalleled integration with analog input, digital processing and analog output functionality. The apr33a series incorporates all the functionality required to perform demanding audio/voice applications. High quality audio/voice systems with lower bill-of-material costs can be implemented with the apr33a series because of its integrated analog data converters and full suite of quality-enhancing features such as sample-rate convertor. The apr33a series C2.0 is specially designed for simple key trigger, user can record and playback the message averagely for 1, 2, 4 or 8 voice message(s) by switch, It is suitable in simple interface or need to limit the length of single message, e.g. toys, leave messages system, answering machine etc. Meanwhile, this mode provides the power-management system. Users can let the chip enter power-down mode when unused. It can effectively reduce electric current consuming to 15uA and increase the using time in any projects powered by batteries. Ver. B 3/24 1/17/2013
4 PIN CONFIGURATION SOP Package Ver. B 4/24 1/17/2013
5 PIN DESCRIPTION Pin Names Pin No TYPE Description VDDP 8 VDD 10 VDDA 18 Positive power supply. VDDL 24 VSSP VSSL 5 11 Power ground. VSSA 17 VLDO 25 Internal LDO output. VCORE 16 Positive power supply for core. VREF 19 Reference voltage. VCM 20 Common mode voltage. Rosc 26 INPUT Oscillator resistor input. RSTB 27 INPUT Reset. (Low active) SRSTB 28 INPUT System reset, pull-down a resistor to the VSSL. MIC+ 21 MIC- 22 INPUT Microphone differential input. MICG 23 OUTPUT Microphone ground. VOUT2 6 VOUT1 7 OUTPUT PWM output to drive speaker directly. /REC 12 INPUT Record Mode. (Low active) M0 13 INPUT Message-0. M1 14 INPUT Message-1. M2 15 INPUT Message-2. M3 9 INPUT Message-3. M4 3 INPUT Message-4. M5 4 INPUT Message-5. M6 / MSEL0 1 INPUT Message-6, Message select 0. M7 / MSEL1 2 INPUT Message-7, Message select 1. Ver. B 5/24 1/17/2013
6 TYPICAL APPLICATION Ver. B 6/24 1/17/2013
7 MESSAGE MODE In fixed 1/ 2/ 4/ 8 message mode (C2.0), user can divide the memory averagely for 1, 2, 4 or 8 message(s). The message mode will be applied after chip reset by the MSEL0 and MSEL1 pin. Please note the message should be recorded and played in same message mode, we CAN NOT guarantee the message is complete after message mode changed. For example, user recorded 8 messages in the 8-message mode, those messages can be played in 8-message mode only. If user changed to 1, 2 or 4 message mode, system will discard those messages. 8-Message Mode The memory will be divided to 8 messages averagely when both MSEL0 and MSEL1 pin float after chip reset. Ver. B 7/24 1/17/2013
8 4-Message Mode The memory will be divided to 4 messages averagely when MSEL0 pin connected to VSS and MSEL1 pin float after chip reset. 2-Message Mode The memory will be divided to 2 messages averagely when MSEL1 pin connected to VSS and MSEL0 pin float after chip reset. Ver. B 8/24 1/17/2013
9 1-Message Mode The memory will be for 1 message when both MSEL0 and MSEL1 pin connected to VSS after chip reset. Ver. B 9/24 1/17/2013
10 RECORD MESSAGE During the /REC pin drove to VIL, chip in the record mode. When the message pin (M0, M1, M2 M7) drove to VIL in record mode, the chip will playback beep tone and message record starting. The message record will continue until message pin released or full of this message, and the chip will playback beep tone 2 times to indicate the message record finished. If the message already exist and user record again, the old one s message will be replaced. The following fig. showed a typical record circuit for 8-message mode. We connected a slide-switch between /REC pin and VSS, and connected 8 tact-switches between M0 ~ M7 pin and VSS. When the slide-switch fixed in VSS side and any tact-switch will be pressed, chip will start message record and until the user releases the tact-switch. Note: After reset, /REC and M0 to M7 pin will be pull-up to VDD by internal resistor. Ver. B 10/24 1/17/2013
11 PLAYBACK MESSAGE During the /REC pin drove to VIH, chip in the playback mode. When the message pin (M0, M1, M2 M7) drove from VIH to VIL in playback mode, the message playback starting. The message playback will continue until message pin drove from VIH to VIL again or end of this message. The following fig. showed a typical playback circuit for 8-message mode. We connected a slide-switch between /REC and VSS, and connected 8 tact-switches between M0 ~ M7 and VSS. When the slide-switch fixed in float side and any tact-switch will be pressed, chip will start message playback and until the user pressed the tact-switch again or end of message. Note: After reset, /REC and M0 to M7 pin will be pull-up to VDD by internal resistor. Ver. B 11/24 1/17/2013
12 VOICE INPUT The apr33a series supported single channel voice input by microphone or line-in. The following fig. showed circuit for different input methods: microphone, line-in and mixture of both. (A) Microphone Ver. B 12/24 1/17/2013
13 (B) Line-In (C) Microphone + Line-In Ver. B 13/24 1/17/2013
14 BUSY The MICG pin will be drove to low during the message record or playback, and drove to high during idle or standby, user can detect MICG status to know chip is busy or not. Please note it is limited for MICG pin driving current. Reference to IOH and IOL in section DC CHARACTERISTICS. If MICG pin is over loading from external circuit, it will cause noise in microphone circuit. Ver. B 14/24 1/17/2013
15 Below is a typical application. We add one LED to indicate IC record and playback status. We use one Resistor to limit current. And suggest R> 470Ω Ver. B 15/24 1/17/2013
16 Below Transistor circuit is to get higher current, larger than IOHor IOL. Ver. B 16/24 1/17/2013
17 To get best sound quality, we can use buffer or inverter to isolate MICG to avoid noise from external circuit. Driving current is provided by buffer(inverter) only. Ver. B 17/24 1/17/2013
18 RESET apr33a series can enter standby mode when RSTB pin drive to low. During chip in the standby mode, the current consumption is reduced to ISB and any operation will be stopped, user also can not execute any new operate in this mode. The standby mode will continue until RSTB pin goes to high, chip will be started to initial, and playback beep tone to indicate enter idle mode. User can get less current consumption by control RSTB pin specially in some application which concern standby current. Ver. B 18/24 1/17/2013
19 EXAMPLE The apr33db is one of the simplest solutions for achieve fixed 1/ 2/ 4/ 8 message mode demo. The circuit board already includes the peripheral circuit which containing microphone. Developers only need to notice how to connect with their development environment. It can effectively decrease the time of circuit connecting & any possible mistakes. Below figure shows how to connect apr33db with external key in fixed 1/ 2/ 4/ 8 message mode: Ver. B 19/24 1/17/2013
20 BLOCK DIAGRAM Figure 1. Block Diagram ABSOLUTE MAXIMUM RATINGS Symbol Rating Unit VDD VSS -0.3 ~ V VIN VSS-0.3 < VIN < VDD+0.3 V VOUT VSS < VOUT < VDD V T(Operating) -40 ~ +85 T(Junction) -40 ~ +125 T(Storage) -40 ~ +125 Ver. B 20/24 1/17/2013
21 DC CHARACTERISTICS Symbol Parameter Min. Typ. Max. Unit Conditions VDD Operating Voltage V ISB Standby Current 1 µa IPDN Power-Down Current µa IOP(IDLE) Operating Current (Idle) 20 ma VDD = 5V IOP(REC) Operating Current (Record) 35 ma VDD = 5V IOP(PLAY) Operating Current (Playback) 25 ma VDD = 5V VIH "H" Input Voltage 2.5 V VIL "L" Input Voltage 0.6 V IVOUT VOUT Current 185 ma IOH O/P High Current 8 ma VDD = 5V / VOH=4.5V IOL O/P Low Current 14 ma VDD = 5V / VOH=0.5V RNPIO Input pin pull-down resistance RUPIO Input pin pull-up resistance 4.7 KΩ 300 KΩ External floating or drive low. 1 MΩ External drive high. Fs/Fs Frequency stability 5 % VDD = 5V ± 1.0V Fc/Fc Chip to chip Frequency Variation 5 % Also apply to lot to lot variation. Ver. B 21/24 1/17/2013
22 AC CHARACTERISTICS Symbol Parameter Min. Typ. Max. Unit Conditions T1 /CS Setup Time ms VDD=5.0V T2 Trigger Setup Time ms VDD=5.0V T3 Trigger Hold Time ms VDD=5.0V T4 /CS Hold Time us VDD=5.0V Ver. B 22/24 1/17/2013
23 PACKAGE INFORMATION Ver. B 23/24 1/17/2013
24 HISTORY Ver. B (2013/01/17) - Add section BUSY. Ver. A (2012/11/15) - Original version data sheet for apr33ax C2.0. Ver. B 24/24 1/17/2013
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