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参数资料
| 型号： | 1339-31DCGI8 |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO8 |
| 封装： | 0.150 INCH, ROHS COMPLIANT, SOIC-8 |
| 文件页数： | 25/26页 |
| 文件大小： | 330K |
| 代理商： | 1339-31DCGI8 |
IDT1339
REAL-TIME CLOCK WITH SERIAL I2C INTERFACE
RTC
IDT
REAL-TIME CLOCK WITH SERIAL I2C INTERFACE
8
IDT1339
REV N 060311
Table 4. Alarm Mask Bits
Special-Purpose Registers
The IDT1339 has two additional registers (control and status) that control the RTC, alarms, and square-wave output.
Control Register (0Eh)
Bit 7: Enable Oscillator (EOSC). This bit when set to logic 0 starts the oscillator. When this bit is set to a logic 1,
the oscillator is stopped. This bit is enabled (logic 0) when power is first applied.
Bit 5: Battery-Backed Square-Wave and Interrupt Enable (BBSQI). This bit when set to a logic 1 enables the
square wave or interrupt output when VCC is absent and the IDT1339 is being powered by the VBACKUP pin. When
BBSQI is a logic 0, the SQW/INT pin goes high impedance when VCC falls below the power-fail trip point. This bit is
disabled (logic 0) when power is first applied.
Bits 4 and 3: Rate Select (RS2 and RS1). These bits control the frequency of the square-wave output when the
square wave has been enabled. Table 5 shows the square-wave frequencies that can be selected with the RS bits.
These bits are both set to logic 1 (32 kHz) when power is first applied.
DY/DT
Alarm 1 Register Mask Bits (Bit 7)
Alarm Rate
A1M4
A1M3
A1M2
A1M1
X
1111
Alarm once per second.
X
1110
Alarm when seconds match.
X
1100
Alarm when minutes and seconds match.
X
1000
Alarm when hours, minutes, and seconds match.
0
0000
Alarm when date, hours, minutes, and seconds match.
1
0000
Alarm when day, hours, minutes, and seconds match.
DY/DT
Alarm 2 Register Mask Bits (Bit 7)
Alarm Rate
A2M4
A2M3
A2M2
X
1
Alarm once per minute (00 sec. of every min.).
X
1
0
Alarm when minutes match.
X
1
0
Alarm when hours and minutes match.
0
Alarm when date, hours, and minutes match.
1
0
Alarm when day, hours, and minutes match.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
EOSC
0
BBSQI
RS2
RS1
INTCN
A2IE
A1IE
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 1339-31DVGI | 功能描述:实时时钟 实时时钟 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| 1339-31DVGI8 | 功能描述:实时时钟 实时时钟 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| 133933 | 制造商:ERNI Electronics 功能描述:133933 / MODULAR JACK |
| 133934 | 制造商:ERNI Electronics 功能描述:Conn Telephone/Telecom F 8 POS 2.54mm Solder ST Thru-Hole 8 Terminal 1 Port Tray Cat 5 |
| 1339342-1 | 功能描述:集管和线壳 1 Pair Double Red Pivot Conn RoHS:否 产品种类:1.0MM Rectangular Connectors 产品类型:Headers - Pin Strip 系列:DF50 触点类型:Pin (Male) 节距:1 mm 位置/触点数量:16 排数:1 安装风格:SMD/SMT 安装角:Right 端接类型:Solder 外壳材料:Liquid Crystal Polymer (LCP) 触点材料:Brass 触点电镀:Gold 制造商:Hirose Connector |
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