参数资料
型号: DS1315S-5+T&R
厂商: Maxim Integrated Products
文件页数: 19/21页
文件大小: 0K
描述: IC T-CHIP PHANTOM 5V 16-SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1,000
类型: Phantom 计时芯片
特点: 闰年
时间格式: HH:MM:SS:hh(12/24 小时)
数据格式: YY-MM-DD-dd
接口: 并联
电源电压: 4.5 V ~ 5.5 V
电压 - 电源,电池: 2.5 V ~ 3.7 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.295",7.50mm 宽)
供应商设备封装: 16-SOIC W
包装: 带卷 (TR)
DS1315 Phantom Time Chip
7 of 21
Figure 4. ROM/Time Chip Interface
Time Chip Register Information
Time Chip information is contained in eight registers of 8 bits, each of which is sequentially accessed 1
bit at a time after the 64-bit pattern recognition sequence has been completed. When updating the Time
Chip registers, each must be handled in groups of 8 bits. Writing and reading individual bits within a
register could produce erroneous results. These read/write registers are defined in Figure 5.
Data contained in the Time Chip registers is in binary coded decimal format (BCD). Reading and writing
the registers is always accomplished by stepping though all eight registers, starting with bit 0 of register 0
and ending with bit 7 of register 7.
AM/PM/12/24-Mode
Bit 7 of the hours register is defined as the 12- or 24-hour mode select bit. When high, the 12-hour mode
is selected. In the 12-hour mode, bit 5 is the AM/PM bit with logic high being PM. In the 24-hour mode,
bit 5 is the 20-hour bit (20-23 hours).
Oscillator and Reset Bits
Bits 4 and 5 of the day register are used to control the reset and oscillator functions. Bit 4 controls the
reset pin input. When the reset bit is set to logic 1, the reset input pin is ignored. When the reset bit is set
to logic 0, a low input on the reset pin will cause the Time Chip to abort data transfer without changing
data in the timekeeping registers. Reset operates independently of all other in-puts. Bit 5 controls the
oscillator. When set to logic 0, the oscillator turns on and the real time clock/calendar begins to
increment.
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