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參數(shù)資料
| 型號： | M41T66Q6F |
| 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： | REAL TIME CLOCK, QCC16 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, QFN-16 |
| 文件頁數(shù)： | 19/33頁 |
| 文件大?。?/td> | 336K |
| 代理商： | M41T66Q6F |
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DC and AC parameters
M41T66
Table 12.
Oscillator characteristics
Figure 16.
Bus timing requirements sequence
Table 11.
Crystal electrical characteristics
Sym
Parameter(1)(2)
1.
Externally supplied if using the QFN16 package. STMicroelectronics recommends the Citizen CFS-145
(1.5 x 5 mm) and the KDS DT-38 (3 x 8 mm) for thru-hole, or the KDS DMX-26S
(3.2 x 8 mm) for surface-mount, tuning fork-type quartz crystals. KDS can be contacted at
http://www.kds.info/index_en.htm. Citizen can be contacted at http://www.citizencrystal.com.
2.
Load capacitors are integrated within the M41T66. Circuit board layout considerations for the 32.768 kHz
crystal of minimum trace lengths and isolation from RF generating signals should be taken into account.
Min
Typ
Max
Units
fO
Resonant frequency
32.768
kHz
RS
Series resistance (TA = –40 to 70°C)
75(3)(4)
3.
Guaranteed by design.
4.
RS (max) = 65 kΩ for TA = –40 to 85°C and oscillator startup at 1.7 V.
k
Ω
CL
Load capacitance
6
pF
7-12.5(5)
5.
External capactors must be added to achieve better clock accuracy.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VSTA
Oscillator start voltage
at 25°C
1.6
V
tSTA
Oscillator start time
VCC = 1.6 V
at 25°C
500
ms
VCC = 3.0 V
1
s
Cg
XIN
12
pF
Cd
XOUT
12
pF
IC-to-IC frequency variation (1)
1.
Reference value. TA = 25°C, VCC = 3.0 V, CMJ-145 (CL = 6 pF, 32,768 Hz) manufactured by Citizen.
–10
+10
ppm
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| M41T80M6 | 功能描述:實(shí)時時鐘 USE 511-M41T80M6E 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 |
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