- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45050 > M41T93ZMY6F (STMICROELECTRONICS) 1 TIMER(S), REAL TIME CLOCK, PDSO18 PDF資料下載
參數(shù)資料
| 型號： | M41T93ZMY6F |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 時鐘/數(shù)據(jù)恢復(fù)及定時提取 |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO18 |
| 封裝： | 0.300 INCH, ROHS COMPLIANT, PLASTIC, SOP-18 |
| 文件頁數(shù)： | 11/49頁 |
| 文件大?。?/td> | 719K |
| 代理商： | M41T93ZMY6F |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁當(dāng)前第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頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁
M41T93
Clock operation
Doc ID 12615 Rev 5
3.3
Real-time clock accuracy
The M41T93 is driven by a quartz controlled oscillator with a nominal frequency of
32,768 Hz. The accuracy of the real-time clock is dependent upon the accuracy of the
crystal, and the match between the capacitive load of the oscillator circuit and the capacitive
load for which the crystal was trimmed. Temperature also affects the crystal frequency,
causing additional error (see Figure 10 on page 23).
The M41T93 provides the option of clock correction through either manufacturing calibration
or in-application calibration. The total possible compensation is typically –93 ppm to +156
ppm. The two compensation circuits that are available are:
1.
An analog calibration register (12h) can be used to adjust internal (on-chip) load
capacitors for oscillator capacitance trimming. The individual load capacitors CXI and
0.25pF. This translates to a calculated compensation of approximately ±30 ppm (see
2.
A digital calibration register (08h) can also be used to adjust the clock counter by
adding or subtracting a pulse at the 512 Hz divider stage. This approach provides
periodic compensation of approximately –63 ppm to +126 ppm (see Digital calibration
Figure 9.
Internal load capacitance adjustment
AI11804
XO
XI
Crystal Oscillator
CXI
CXO
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M41T93ZQA6F | 1 TIMER(S), REAL TIME CLOCK, PQCC16 |
| M41T93RQA6F | 1 TIMER(S), REAL TIME CLOCK, PQCC16 |
| M41T93SQA6F | 1 TIMER(S), REAL TIME CLOCK, PQCC16 |
| M43C505-XXX-DIT | 4-BIT, MROM, 2 MHz, MICROCONTROLLER, UUC |
| M43C505-XXX-Q44 | 4-BIT, MROM, 2 MHz, MICROCONTROLLER, PQCC44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M41T93ZQA6E | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial SPI bus RTC with battery switchover |
| M41T93ZQA6F | 功能描述:實時時鐘 Serial SPI bus RTC 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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| M41T94 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:512 Bit 64 bit x8 SERIAL RTC SPI SRAM |
| M41T94_06 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial Real Time Clock with 44Bytes NVRAM and Reset |
| M41T94_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial real-time clock with 44 bytes NVRAM and reset |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。