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M4T28-BR12SH1TR 参数 Datasheet PDF下载

M4T28-BR12SH1TR图片预览
型号: M4T28-BR12SH1TR
PDF下载: 下载PDF文件 查看货源
内容描述: TIMEKEEPER SNAPHAT ( BATTERY水晶) [TIMEKEEPER SNAPHAT (BATTERY & CRYSTAL)]
分类和应用: 计时器或实时时钟微控制器和处理器外围集成电路
文件页数/大小: 12 页 / 173 K
品牌: STMICROELECTRONICS [ ST ]
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M4T28-BR12SH, M4T32-BR12SH  
SUMMARY DESCRIPTION  
®
The M4TXX-BR12SH SNAPHAT top is a detach-  
able lithium power source for ST’s non-volatile  
The SNAPHAT top contains both the battery and  
crystal and is designed to be “snapped on” after  
the SOIC is surface mounted on the PC board.  
Thus the two piece solution prevents the battery  
and crystal from being exposed to the high tem-  
peratures of the surface mount process.  
®
TIMEKEEPER surface-mount SOIC (MH) pack-  
age (28- and 44-pin).  
Figure 2. Logic Diagram  
Table 1. Signal Names  
X1  
X2  
V
Crystal Input  
Crystal Output  
Negative Voltage  
Positive Voltage  
X1  
X2  
BAT–  
V
BAT+  
SNAPHAT  
V
V
BAT+  
BAT–  
AI02528  
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