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參數(shù)資料
| 型號： | MAX6901ETA-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | XO, clock |
| 英文描述： | 3-Wire Serial RTC in a TDFN |
| 中文描述： | REAL TIME CLOCK, PDSO8 |
| 封裝： | 3 X 3 MM, 0.80 MM HEIGHT, TDFN-8 |
| 文件頁數(shù)： | 4/18頁 |
| 文件大?。?/td> | 786K |
| 代理商： | MAX6901ETA-T |
MAX6901
32.768kHz Output (32KHZ)
32KHZ is a push-pull 32.768kHz output for timing or
clocking of external devices. Bit D7 in the Clock
Seconds register is the active-low enable bit for 32KHZ.
When D7 is logic 0, 32KHZ is enabled. When logic 1,
32KHZ is disabled and set to high impedance. Power-
on reset enables the 32.768kHz output.
Applications Information
Crystal Selection
The MAX6901 is designed to use a standard 32.768kHz
watch crystal. Table 1 details the recommended crystal
requirements. Some suggested crystals are listed in
Table 4. In addition to the specified SMT devices, some
of the listed manufacturers also offer other package
options.
Frequency Stability and Temperature
Timekeeping accuracy of the MAX6901 is dependent
on the frequency stability of the external crystal. To
determine frequency stability, use the parabolic curve
in Figure 6 and the following equations:
f = fk (T
0 - T)
2
where:
f = change in frequency from +25°C
3-Wire Serial RTC in a TDFN
12
______________________________________________________________________________________
Figure 2. Single Byte Data Transfer
SCLK
A0
A1
A2
A3
A4
A5
A6
A7
D0
D1
D2
D3
D4
D5
D6
D7
CS
I/O
ADDRESS/COMMAND BYTE
I/O DATA BYTE
11
A1
A2
A3
A4
A5
R
R = RAM/ REGISTER SELECT BIT
RAM = 1, REGISTER = 0
ADDRESS/COMMAND BYTE
(b) 3-WIRE SINGLE BYTE WRITE:
(a) 3-WIRE SINGLE BYTE READ:
I/O DATA BYTE
A1
A2
A3
A4
A5
A6
A7
D0
D1
D2
D3
D4
D5
D6
CS
SCLK
I/O
D7
0
A1
A2
A3
A4
A5
R
1
R = RAM/ REGISTER SELECT BIT
RAM = 1, REGISTER = 0
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6902ETA | 制造商:Rochester Electronics LLC 功能描述: |
| MAX6902ETA＋ | 制造商:Maxim Integrated Products 功能描述: |
| MAX6902ETA+T | 功能描述:實(shí)時時鐘 SPI-Compatible 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 |
| MAX6902ETA-C6P | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX6902ETA-T | 功能描述:實(shí)時時鐘 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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