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M40Z300 데이터시트(PDF) 12 Page - STMicroelectronics

부품명 M40Z300
상세설명  5V or 3V NVRAM supervisor for up to 8 LPSRAMs
PDF  25 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M40Z300 데이터시트(HTML) 12 Page - STMicroelectronics

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Operation
M40Z300, M40Z300W
12/25
absorbed when overshoots occur. A ceramic bypass capacitor value of 0.1µF (as shown in
Figure 7) is recommended in order to provide the needed filtering.
In addition to transients that are caused by normal SRAM operation, power cycling can
generate negative voltage spikes on VCC that drive it to values below VSS by as much as
one volt. These negative spikes can cause data corruption in the SRAM while in battery
backup mode. To protect from these voltage spikes, STMicroelectronics recommends
connecting a schottky diode from VCC to VSS (cathode connected to VCC, anode to VSS).
Schottky diode 1N5817 is recommended for through hole and MBRS120T3 is
recommended for surface mount.
Figure 7.
Supply voltage protection
AI00622
VCC
0.1
μF
DEVICE
VCC
VSS



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