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参数资料
| 型号： | DS1244Y-120 |
| 英文描述： | 256K NV SRAM with Phantom Clock |
| 中文描述： | 256K非易失SRAM与幻影时钟 |
| 文件页数： | 7/12页 |
| 文件大小： | 100K |
| 代理商： | DS1244Y-120 |
DS1244Y
032697 4/12
PHANTOM CLOCK REGISTER DEFINITION Figure 2
76
54
3
2
1
0
0.1 SEC
00–99
00–59
01–12
01–07
01–31
01–12
00–99
0
1
2
3
4
5
6
7
RANGE
(BCD)
REGISTER
0
12/24
0
10
HR
00
0
00
0
10
MONTH
10 YEAR
YEAR
0.01 SEC
00–23
10 SEC
SECONDS
10 MIN
MINUTES
A/P
HOUR
OSC
RST
DAY
10 DATE
DATE
MONTH
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 second 10–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 log-
ic 0, the oscillator turns on and the watch becomes op-
erational. These bits are shipped from the factory set to
a logic 1.
ZERO BITS
Registers 1, 2, 3, 4, 5, and 6 contain one or more bits
which will always read logic 0. When writing these loca-
tions, either a logic 1 or 0 is acceptable.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1244Y-150 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| DS1244Y-200 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:256K NV SRAM with Phantom Clock |
| DS1244Y-70 | 功能描述: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 |
| DS1244Y-70+ | 功能描述:实时时钟 256k 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 |
| DS1244YP/WP | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:PowerCap with Crystal |
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