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參數(shù)資料
| 型號(hào)： | M41ST85WMH6E |
| 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： | 0.300 INCH, SNAPHAT, ROHS COMPLIANT, PLASTIC, SOH-28 |
| 文件頁數(shù)： | 1/41頁 |
| 文件大小： | 376K |
| 代理商： | M41ST85WMH6E |
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December 2008
Rev 10
1
M41ST85W
3.0/3.3 V I2C combination serial RTC, NVRAM
supervisor and microprocessor supervisor
Features
■ Automatic battery switchover and WRITE
protect for:
– Internal serial RTC and
– External low power SRAM (LPSRAM)
■ 400 kHz I2C serial interface
■ 3.0/3.3 V operating voltage
–VCC = 2.7 to 3.6 V
■ Ultralow battery supply current of 500 nA (max)
■ RoHS compliant
– Lead-free second level interconnect
Serial RTC features
■ 400 kHz I2C
■ 44 bytes of general purpose NVRAM
■ Counters for:
– Seconds, minutes, hours, day, date, month,
and year
–Century
– Tenths/hundredths of seconds
– Clock calibration register allows
compensation for crystal variations over
temperature
■ Programmable alarm with repeat modes
– Functions in battery back-up mode
■ Power-down timestamp (HT bit)
■ 2.5 to 5.5 V oscillator operating voltage
Microprocessor supervisor features
■ Programmable watchdog
– 62.5 ms to 128 s time-out period
■ Early power-fail warning circuit (PFI/PFO) with
1.25 V precision reference
■ Power-on reset/low voltage detect
– Open drain reset output
– Reset voltage, VPFD = 2.60 V (nom)
– Two reset input pins
– Watchdog can be steered to reset output
NVRAM supervisor features
■ Non-volatizes external LPSRAM
– Automatically switches to back-up battery
and deselects (write-protects) external
LPSRAM via chip-enable gate
– Power-fail deselect (write protect) voltage,
VPFD = 2.60 V (nom)
– Switchover, VSO = 2.50 V (nom)
■ Battery monitor (battery low flag)
Other features
■ Programmable squarewave generator (1 Hz to
32 KHz)
■ –40°C to +85°C operation
■ Package options:
– 28-lead SNAPHAT IC (SOH28) SNAPHAT
battery/crystal top to be ordered separately
– 28-lead embedded crystal SOIC (SOX28)
28
1
SNAPHAT (SH) battery & crystal
SOH28 (MH)
Embedded crystal
SOX28 (MX)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M41ST85WMH6F | 功能描述:實(shí)時(shí)時(shí)鐘 Serial 512 (64x8) 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 |
| M41ST85WMH6F-CUT TAPE | 制造商:ST 功能描述:M41ST Series 3.3 V I2C Serial RTC NVRAM / Microprocessor Superviser - SOH-28 |
| M41ST85WMH6TR | 功能描述:實(shí)時(shí)時(shí)鐘 Advanced Analog 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 |
| M41ST85WMSX6 | 制造商: 功能描述: 制造商:undefined 功能描述: |
| M41ST85WMX | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 OR 3.0V, 512 bit 64 x 8 SERIAL RTC and NVRAM SUPERVISOR |
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