preliminary w522axxx data sheet pwm synthesizer publication release date: may. 2002 - 1 - revision a2 general description w522axxx is a synthesis ic that ut ilizes the 8-bit pcm coding method to generate high quality voice effects. in order to save power, the w522axxx provides pwm output to drive speaker directly without extra transistor and resistor. the w522axxx?s part number and corresponding duration time at various sampling rate listed as below: part number duration @ 4khz duration @ 4. 8khz duration @ 6khz duration @ 8khz w522a008 12.00 seconds 10.00 seconds 8.00 seconds 6.00 seconds W522A010 16.00 seconds 13.00 seconds 10.50 seconds 8.00 seconds features ? wide operating voltage range: 2.4 to 5.5 volts ? 8-bit pcm algorithm for high sound quality ? pwm output to directly drive speaker ? provides 1 direct trigger input (i ncluding cds control circuit) with following mask option of play modes: one shot (enable or di sable interruption) toggle on/off level hold complete cycle level hold (enable or disable interruption) single cycle level hold ? provides 1 output with following mask options: active high or low in busy signal output wh ile voice playing (not including silence) led flash type: 1.5hz, 3hz or 6hz. led volume control: ?, ?, ?. ? maximum duration (voice duration + silence) in repeat cycle is around 21 seconds at 6 khz ? repeat number 1 to 8 can be mask optioned fo r both one shot and single-cycle level hold ? two kinds of trigger input de-bounce time (10 ms or 50 s) by mask option ? four kinds of frequencies, 4/4.8/6/ 8 khz, can be chosen by mask option
w522axxx publication release date: may. 2002 - 2 - revision a2 pin description pin name i/o description test i test pin with internally pull-high o/p o output: busy, led flash by mask option pwm+/p wm- o pwm driver positive/negative output vdd power positive power supply for o scillator, logical cells and pwm driver vss ground tg i trigger input osc i resistor of ring oscillato r is connected between osc and vdd block diagram pwm+ pwm- o/p test osc tg vss vdd timing gentrator rom pwm counter pla table control logic pwm+ pwm- osc test vdd vss o/p
w522axxx publication release date: may. 2002 - 3 - revision a2 absolute maximum ratings parameter symbol conditions rated value unit power supply v dd ? v ss - -0.3 to +7.0 v input voltage v in all inputs v ss -0.3 to v dd +0.3 v storage temp. t stg - -55 to +150 c operating temp. t opr - 0 to +70 c note: exposure to conditions beyond those listed under absolute ma ximum ratings may adversely affect the life and reliability o f the device. electrical characteristics (t a = 25 c, v ss = 0 v) limits unit parameter sym. conditions min. typ. max. operating voltage v dd - 2.4 3 5.5 v v il v ss -0.3 - 0.3*v dd input voltage v ih all input pins 0.7 v dd - v dd v i dd1 v dd = 3v, no playing - - 1.0 standby current i dd2 v dd = 4.5v, no playing - - 1.0 a i op1 v dd = 3v, no load - - 4 operating current i op2 v dd = 5v, no load - - 8 m a input current for tg i in v dd = 3v, v in = 0v 4 8 12 a input current test i test v dd = 3v, v test = 3v 6 10 20 a pwm drive current i pd v dd = 3v, r l = 8 ? -130 - - ma pwm sink current i ps v dd = 3v, r l = 8 ? 130 - - ma i ol v dd = 3v, v out = 1v 10 - - output current i oh v dd = 3v, v out = 2v -5 - - ma v dd = 3v, r osc = typ. 2.7 3 3.3 oscillation freq. f osc v dd = 4.5v, r osc = typ. 2.7 3 3.3 mhz oscillation freq. deviation by voltage drop ? f f osc osc [f(5.5v)- f(2.4v)]/f(2.4v) - - 10 % note: rosc = typical value = 510k ohm
w522axxx publication release date: may. 2002 - 4 - revision a2 application circuit notes: 1. in principle, the playing speed determined by r osc should correspond to the sampling rate during the coding phase. the playing speed may be adjusted by varying r osc . the typical value of rosc is 510k ohm. 2. the capacitor, c (0.1uf), shunted between vdd and vss is necessary for pwm output. 3. r is used to limit the current on the led. 4. no warranty for production. headquarters no. 4, creation rd. iii, science-based industrial park, hsinchu, taiwan tel: 886-3-5770066 fax: 886-3-5665577 http://www.winbond.com.tw/ taipei office tel: 886-2-8177-7168 fax: 886-2-8751-3579 winbond electronics corporation america 2727 north first street, san jose, ca 95134, u.s.a. tel: 1-408-9436666 fax: 1-408-5441798 winbond electronics (h.k.) ltd. no. 378 kwun tong rd., kowloon, hong kong fax: 852-27552064 unit 9-15, 22f, millennium city, tel: 852-27513100 please note that all data and specifications are subject to change without notice. all the trade marks of products and companies mentioned in this data sheet belong to their respective owners. winbond electronics (shanghai) ltd. 200336 china fax: 86-21-62365998 27f, 2299 yan an w. rd. shanghai, tel: 86-21-62365999 winbond electronics corporation japan shinyokohama kohoku-ku, yokohama, 222-0033 fax: 81-45-4781800 7f daini-ueno bldg, 3-7-18 tel: 81-45-4781881 9f, no.480, rueiguang rd., neihu chiu, taipei, 114, taiwan, r.o.c. 100 ohm r tg pwm- vdd osc pwm+ vss vdd o/p rosc speaker 8 ohm ? watt c 0.1 uf w522axxx
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