- 您現在的位置：買賣IC網 > PDF目錄67775 > M41ST85YMH6 (STMICROELECTRONICS) 1 TIMER(S), REAL TIME CLOCK, PDSO28 PDF資料下載
參數資料
| 型號： | M41ST85YMH6 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 時鐘/數據恢復及定時提取 |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
| 封裝： | 0.330 INCH, SNAPHAT, PLASTIC, SOH-28 |
| 文件頁數： | 5/34頁 |
| 文件大?。?/td> | 532K |
| 代理商： | M41ST85YMH6 |
第1頁第2頁第3頁第4頁當前第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁
13/34
M41ST85Y, M41ST85W
CLOCK OPERATION
The
eight
byte
clock
register
(see
2., page 14) is used to both set the clock and to
read the date and time from the clock, in a binary
coded decimal format. Tenths/Hundredths of Sec-
onds, Seconds, Minutes, and Hours are contained
within the first four registers.
Note: A WRITE to any clock register will result in
the Tenths/Hundredths of Seconds being reset to
“00,” and Tenths/Hundredths of Seconds cannot
be written to any value other than “00.”
Bits D6 and D7 of Clock Register 03h (Century/
Hours Register) contain the CENTURY ENABLE
Bit (CEB) and the CENTURY Bit (CB). Setting
CEB to a '1' will cause CB to toggle, either from '0'
to '1' or from '1' to '0' at the turn of the century (de-
pending upon its initial state). If CEB is set to a '0,'
CB will not toggle. Bits D0 through D2 of Register
04h contain the Day (day of week). Registers 05h,
06h, and 07h contain the Date (day of month),
Month and Years. The ninth clock register is the
Control Register (this is described in the Clock
Calibration section). Bit D7 of Register 01h con-
tains the STOP Bit (ST). Setting this bit to a '1' will
cause the oscillator to stop. If the device is expect-
ed to spend a significant amount of time on the
shelf, the oscillator may be stopped to reduce cur-
rent drain. When reset to a '0' the oscillator restarts
within one second.
The eight Clock Registers may be read one byte at
a time, or in a sequential block. The Control Reg-
ister (Address location 08h) may be accessed in-
dependently. Provision has been made to assure
that a clock update does not occur while any of the
eight clock addresses are being read. If a clock ad-
dress is being read, an update of the clock regis-
ters will be halted. This will prevent a transition of
data during the READ.
Power-down Time-Stamp
When a power failure occurs, the Halt Update Bit
(HT) will automatically be set to a '1.' This will pre-
vent the clock from updating the TIMEKEEPER
registers, and will allow the user to read the exact
time of the power-down event. Resetting the HT
Bit to a '0' will allow the clock to update the TIME-
KEEPER registers with the current time. For more
information, see Application Note AN1572.
TIMEKEEPER Registers
The M41ST85Y/W offers 20 internal registers
which contain Clock, Alarm, Watchdog, Flag,
Square Wave and Control data. These registers
are memory locations which contain external (user
accessible) and internal copies of the data (usually
referred to as BiPORT TIMEKEEPER cells). The
external copies are independent of internal func-
tions except that they are updated periodically by
the simultaneous transfer of the incremented inter-
nal copy. The internal divider (or clock) chain will
be reset upon the completion of a WRITE to any
clock address.
The system-to-user transfer of clock data will be
halted whenever the address being read is a clock
address (00h to 07h). The update will resume ei-
ther due to a Stop Condition or when the pointer
increments to a non-clock or RAM address.
TIMEKEEPER and Alarm Registers store data in
BCD. Control, Watchdog and Square Wave Reg-
isters store data in Binary Format.
相關PDF資料 |
PDF描述 |
|---|---|
| M41ST85YMX6TR | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
| M41ST85YMH6F | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
| M41ST85YMH6E | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
| M41T11MH6 | 0 TIMER(S), REAL TIME CLOCK, PDSO28 |
| M41T11M6 | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| M41ST85YMH6E | 功能描述:IC RTC 5.0V 512BIT NVRAM 28SOIC RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 實時時鐘 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- 類型:時鐘/日歷 特點:警報器，閏年，SRAM 存儲容量:- 時間格式:HH:MM:SS（12/24 小時） 數據格式:YY-MM-DD-dd 接口:SPI 電源電壓:2 V ~ 5.5 V 電壓 - 電源，電池:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤 供應商設備封裝:8-TDFN EP 包裝:管件 |
| M41ST85YMH6TR | 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 |
| M41ST85YMX | 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 |
| M41ST85YMX6 | 功能描述:實時時鐘 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 時間格式:HH:MM:SS RTC 存儲容量: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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| M41ST85YMX6TR | 制造商:STMicroelectronics 功能描述:REAL TIME CLOCK SERL 64BYTE 28PIN SOX - Tape and Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復。