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SN66120B 参数 Datasheet PDF下载

SN66120B图片预览
型号: SN66120B
PDF下载: 下载PDF文件 查看货源
内容描述: 4通道语音控制器 [4-Channel Speech Controller]
分类和应用: 控制器
文件页数/大小: 11 页 / 304 K
品牌: SONIX [ SONIX TECHNOLOGY COMPANY ]
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SN66120B  
4-Channel Speech Controller  
5 FUNCTION DESCRIPTIONS  
5.1. Oscillator  
SN66120B accepts crystal oscillator / ceramic resonator or RC type oscillator  
(selected by pin CKSEL) for system clock. The typical circuit diagrams for oscillator  
are listed as follows.  
VDD  
VDD  
20pf  
OSC/XIN  
XOUT  
OSC/XIN  
XOUT  
CKSEL  
CKSEL  
2MHz  
20pf  
Crystal / Resonator  
RC Oscillator  
5.2. ROM  
SN66120B contains 384K word (12-bit) internal ROM. Program, voices, melodies,  
data, and instrument waveforms share the same ROM with the others.  
5.3. RAM  
SN66120B contains 128 nibble RAM. The 128 nibble RAM is separated into two  
pages (page 0 and page 1). An implicit page indicator is utilized to specify page  
address. Two instructions, PAGE0 and PAGE1, can switch the page indicator. All 64  
nibbles of each page can be accessed by direct mode (to specify M0 ~ M63 in the data  
transfer type instructions.)  
5.4. Power Down Mode  
“End” instruction will let SN66120B enter power down mode and consumer very little  
amount of current. (<2uA @VDD=3V and <5uA @VDD=5V) After SN66120B enters  
power down mode, any valid data transition (LH or HL) occurring on any input  
ports or IO ports (P1, P2, and P3) lead SN66120B back to normal operation mode.  
3
Ver: 1.1  
December 6, 2004