Datasheet > SNC343_05

SNC343_05

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
松翰 - SONIX		驱动控制器
页数	文件大小	规格书
11页	402K
描述
Direct Drive Voice/Dual Tone Melody Controller

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SNC343_05 数据手册

SNC343

Direct Drive Voice/Dual Tone Melody Controller

5 FUNCTION DESCRIPTIONS

5.1. Oscillator

SNC343 accept RC type oscillator for system clock. The typical circuit diagram for

oscillator is listed as follow.

VCC

OSC

RC Oscillator

5.2. ROM

SNC343 contains substantial 52K words (10-bit) internal ROM. Program, voices and

other data are shared with this same 52K words ROM.

5.3. RAM

SNC343 contains 128 nibbles RAM. The 128 nibbles RAM are divided into eight

pages (page 0 to page 7, 16 nibbles RAM on each page). In our programming

structure, users can easily define and locate RAM page in the program. For instance,

users can use the instructions, PAGEn (n=0 to 7) to switch and indicate the RAM page.

Besides, users can use direct mode, M0 ~ M15 in the data transfer type instructions, to

access all 16 nibbles of each page.

5.4. Power Down Mode

“End” instruction will power down SNC343 and enable IC to consume fewer current for

power saving. (<3uA @VDD=3V and <5uA @VDD=5V) Please be aware that when

the power down mode is activated in SNC343, any valid data transition (LꢁH or HꢁL)

occurring on any input port (P1) or IO ports (P2 and P3) will lead SNC343 back to

normal operation mode.

5.5. Sampling Rate Counter

The unique sampling rate counter is designed in voice channel to be able to play

diverse voices at different sample playing rates. The playing rate can be adaptively

set up among from the wide ranges of 2.5KHz to 20KHz. This feature makes voice

close to its original source and yield the better voice quality.

Ver: 1.4

June 8, 2005

1 234 5 6 7...11

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