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參數(shù)資料
| 型號(hào)： | M48T86MH1E |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取 |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
| 封裝： | 0.330 INCH, ROHS COMPLIANT, PLASTIC, SOH-28 |
| 文件頁數(shù)： | 16/36頁 |
| 文件大?。?/td> | 352K |
| 代理商： | M48T86MH1E |
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Obsolete
Product(s)
- Obsolete
Product(s)
M48T86
Clock operations
3.14
VCC noise and negative going transients
ICC transients, including those produced by output switching, can produce voltage
fluctuations, resulting in spikes on the VCC bus. These transients can be reduced if
capacitors are used to store energy which stabilizes the VCC bus. The energy stored in the
bypass capacitors will be released as low going spikes are generated or energy will be
absorbed when overshoots occur. A ceramic bypass capacitor value of 0.1 F (as shown in
Figure 11) 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, it is recommended to connect 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 11.
Supply voltage protection
AI02169
VCC
0.1
μF
DEVICE
VCC
VSS
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PDF描述 |
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| M50734SP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP64 |
| M50930-XXXFP | 8-BIT, MROM, 4.3 MHz, MICROCONTROLLER, PQFP80 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M48T86MH1F | 功能描述:實(shí)時(shí)時(shí)鐘 5 Volt PC Drop-In RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| M48T86MH1TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 V PC real-time clock |
| M48T86PC | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5V PC REAL TIME CLOCK |
| M48T86PC1 | 功能描述:實(shí)時(shí)時(shí)鐘 5 Volt PC Drop-In RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| M48T86PC1 | 制造商:STMicroelectronics 功能描述:IC - Real Time Clock |
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