參數(shù)資料
型號(hào)： DS2404
英文描述： EconoRAM Time Chip
中文描述： 經(jīng)濟(jì)型RAM時(shí)鐘芯片
文件頁(yè)數(shù)： 7/28頁(yè)
文件大?。?/td> 663K
代理商： DS2404
DS2404
7 of 28
020998
Alarm Registers
The alarm registers for the real-time clock, interval timer, and cycle counter all operate in the same
manner. When the value of a given counter equals the value in its associated alarm register, the
appropriate flag bit is set in the status register. If the corresponding interrupt enable bit(s) in the status
register is set, an interrupt is generated. If a counter and its associated alarm register are write protected
when an alarm occurs, access to the device becomes limited. (See “Status/Control”, “Interrupts”, and the
“Programmable Expiration” sections.)
STATUS/CONTROL REGISTERS
The status and control registers are the first two bytes of page 16 (see “Memory Map”, Figure 4).
Status Register
7
6
5
4
3
2
1
0
X
X
CCE
ITE
RTE
CCF
ITF
RTF
0200h
0
1
RTF
Real-time clock alarm flag
ITF
Interval timer alarm flag
2
CCF
Cycle counter alarm flag
When a given alarm occurs, the corresponding alarm flag is set to a logic 1. The alarm flag(s) is cleared
by reading the status register.
3
4
RTE
Real-time interrupt enable
ITE
Interval timer interrupt enable
5
CCE
Cycle counter interrupt enable
Writing any of the interrupt enable bits to a logic 0 will allow an interrupt condition to be generated when
its corresponding alarm flag is set (see “Interrupts” section).
Control Register
7
6
5
4
3
2
1
0
DSEL
START
STOP
MAN.
AUTO
OSC
RO
WPC
WPI
WPR
0201h
0
1
WPR
WPI
Write protect real-time clock/alarm registers
Write protect interval timer/alarm registers
2
WPC
Write protect cycle counter/alarm registers
Don’t care bits
Read Only
相關(guān)PDF資料
PDF描述
DS2404-001 EconoRAM Time Chip
DS2404B EconoRAM Time Chip
DS2404S EconoRAM Time Chip
DS2405 Addressable Switch
DS2405P Addressable Switch
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS2404-001 制造商:Maxim Integrated Products 功能描述:ECONORAM/TIME, DIP16 (GENERIC) - Rail/Tube
DS2404-001+ 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 512BYTE 16PDIP - Rail/Tube
DS2404B 功能描述:實(shí)時(shí)時(shí)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(shí)間格式:HH:MM:SS RTC 存儲(chǔ)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
DS2404B/T&R 制造商:Maxim Integrated Products 功能描述:ECONORAM/TIME, SSOP16-TRL (GENERIC) - Tape and Reel
DS2404B+ 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 512BYTE 16SSOP - Rail/Tube
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