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M4T28-BR12SH1 参数 Datasheet PDF下载

M4T28-BR12SH1图片预览
型号: M4T28-BR12SH1
PDF下载: 下载PDF文件 查看货源
内容描述: TIMEKEEPER ? SNAPHAT ? (电池和晶体) [TIMEKEEPER? SNAPHAT? (battery and crystal)]
分类和应用: 晶体计时器或实时时钟电池微控制器和处理器外围集成电路
文件页数/大小: 16 页 / 136 K
品牌: STMICROELECTRONICS [ STMICROELECTRONICS ]
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M4T28-BR12SH, M4T32-BR12SH
Description
1
Description
The M4TXX-BR12SH SNAPHAT
®
top is a detachable lithium power source for ST’s non-
volatile TIMEKEEPER
®
surface-mount SOIC (MH) package (28- and 44-pin).
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 temperatures of the surface mount
process.
Figure 1.
Logic diagram
X1
X2
SNAPHAT
VBAT–
VBAT+
AI02528
Table 1.
X1
X2
V
BAT–
V
BAT+
Signal names
Crystal input
Crystal output
Negative voltage
Positive voltage
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