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DS1243Y
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PHANTOM CLOCK REGISTER DEFINITION Figure 2
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 1). 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 Phantom Clock to abort data transfer
without changing data in the watch registers. Bit 5 controls the oscillator. When set to logic 1, the
oscillator is off. When set to logic 0, the oscillator turns on and the watch becomes operational. These
bits are shipped from the factory set to a logic 1, oscillator off.
ZERO BITS
Registers 1, 2, 3, 4, 5, and 6 contain one or more bits that always read logic 0. When writing these
locations, either a logic 1 or 0 is acceptable.
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相关代理商/技术参数
DS1243Y120+ 制造商:Maxim Integrated Products 功能描述:
DS1243Y-120+ 功能描述:实时时钟 64k NV SRAM w/Phantom Clock 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
DS1243Y-120+ 制造商:Maxim Integrated Products 功能描述:IC
DS1243Y-150 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:64K NV SRAM with Phantom Clock
DS1243Y4120 制造商:Maxim Integrated Products 功能描述:
DS-1243ZJ 制造商:Hikvision USA 功能描述:DOME CAMERA PENDANT MOUNT14.3IN X 7.3 X 7.2IN 制造商:HIKVISION 功能描述:DOME CAMERA PENDANT MOUNT 14.3IN X 7.3 X 7.2IN
DS1244 制造商:BB 制造商全称:BB 功能描述:Low-Power, 24-Bit ANALOG-TO-DIGITAL CONVERTER
DS1244P 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:256k NV SRAM with Phantom Clock