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M4T32-BR12SH6 데이터시트(HTML) 5 Page - STMicroelectronics

부품명 M4T32-BR12SH6
상세내용  3.3V, 256Kbit (32Kbit x 8) TIMEKEEPER® SRAM
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제조사  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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M4T32-BR12SH6 데이터시트(HTML) 5 Page - STMicroelectronics

 
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M48T35AV
Description
5/28
1
Description
The M48T35AV TIMEKEEPER® RAM is a 32Kbit x 8 non-volatile static RAM and real-time
clock. The monolithic chip is available in two special packages to provide a highly integrated
battery backed-up memory and real-time clock solution.
The M48T35AV is a non-volatile pin and function equivalent to any JEDEC standard 32Kb x
8 SRAM. It also easily fits into many ROM, EPROM, and EEPROM sockets, providing the
non-volatility of PROMs without any requirement for special WRITE timing or limitations on
the number of WRITEs that can be performed.
The 28-pin, 600mil DIP CAPHAT™ houses the M48T35AV silicon with a quartz crystal and
a long-life lithium button cell in a single package.
The 28-pin, 330mil SOIC provides sockets with gold plated contacts at both ends for direct
connection to a separate SNAPHAT® housing containing the battery and crystal. The
unique design allows the SNAPHAT battery package to be mounted on top of the SOIC
package after the completion of the surface mount process. Insertion of the SNAPHAT
housing after reflow prevents potential battery and crystal damage due to the high
temperatures required for device surface-mounting. The SNAPHAT housing is keyed to
prevent reverse insertion.
The SOIC and battery/crystal packages are shipped separately in plastic anti-static tubes or
in tape & reel form.
For the 28-lead SOIC, the battery/crystal package (e.g. SNAPHAT) part numbers are listed
in Table 17 on page 26.
Figure 1.
Logic diagram
AI02797B
15
A0-A14
W
DQ0-DQ7
VCC
M48T35AV
G
VSS
8
E


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