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參數(shù)資料
| 型號： | DS1486P-120+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 14/14頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TIMEKEEPER RAM 1MB 34-PCM |
| 標準包裝： | 40 |
| 類型： | 時鐘/日歷 |
| 特點： | 警報器，閏年，NVSRAM，方波輸出，監(jiān)視計時器 |
| 存儲容量： | 128KB |
| 時間格式： | HH:MM:SS:hh（12/24 小時） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | 并聯(lián) |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 電壓 - 電源，電池： | 3.3V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 34-PowerCap? 模塊 |
| 供應商設(shè)備封裝： | 34-PowerCap 模塊 |
| 包裝： | 管件 |
DS1486/DS1486P
9 of 14
COMMAND REGISTER (0Bh)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
TE
IPSW
IBH/LO
PU/LVL
WAM
TDM
WAF
TDF
Bit 7: Transfer Enable (TE). This bit when set to a logic 0 will disable the transfer of data between
internal and external clock registers. The contents in the external clock registers are now frozen and reads
or writes will not be affected with updates. This bit must be set to a logic 1 to allow updates.
Bit 6: Interrupt Switch (IPSW). When set to a logic 1,
INTA is the Time-of-Day Alarm and INTB
(INTB) is the Watchdog Alarm. When set to logic 0, this bit reverses the output pins.
INTA is now the
Watchdog Alarm output and
INTB (INTB) is the Time-of-Day Alarm output. The INTA/SQW output pin
shares both the interrupt A and square-wave output function.
INTA and the square wave function should
never be simultaneously enabled or a conflict may occur (32-pin DIP module only).
Bit 5: Interrupt B Sink or Source Current (IBH/LO). When this bit is set to a logic 1 and VCC is
applied,
INTB (INTB) will source current (see DC characteristics IOH). When this bit is set to a logic 0,
INTB will sink current (see IOL in the DC Characteristics).
Bit 4: Interrupt Pulse Mode or Level Mode (PU/LVL). This bit determines whether both interrupts
will output a pulse or level signal. When set to a logic 0,
INTA and INTB (INTB) will be in the level
mode. When this bit is set to a logic 1, the pulse mode is selected and
INTA will sink current for a
minimum of 3ms and then release.
INTB (INTB) will either sink or source current, depending on the
condition of Bit 5, for a minimum of 3ms and then release. INTB will only source current when there is a
voltage present on VCC.
Bit 3: Watchdog Alarm Mask (WAM). When this bit is set to a logic 0, the Watchdog Interrupt output
will be activated. The activated state is determined by bits 1, 4, 5, and 6 of the Command Register. When
this bit is set to a logic 1, the Watchdog interrupt output is deactivated.
Bit 2: Time-of-Day Alarm Mask (TDM). When this bit is set to a logic 0, the Time-of-Day Alarm
Interrupt output will be activated. The activated state is determined by bits 0, 4, 5, and 6 of the Command
Register. When this bit is set to a logic 1, the Time-of-Day Alarm interrupt output is deactivated.
Bit 1: Watchdog Alarm Flag (WAF). This bit is set to a logic 1 when a watchdog alarm interrupt
occurs. This bit is read only. The bit is reset when any of the Watchdog Alarm registers are accessed.
When the interrupt is in the pulse mode (see bit 4 definition), this flag will be in the logic 1 state only
during the time the interrupt is active.
Bit 0: Time-of-Day Flag (TDF). This is a read-only bit. This bit is set to a logic 1 when a Time-of-Day
alarm has occurred. The time the alarm occurred can be determined by reading the Time-of-Day Alarm
registers. This bit is reset to a logic 0 state when any of the Time-of-Day Alarm registers are accessed.
When the interrupt is in the pulse mode (see bit 4 definition), this flag will be in the logic 1 state only
during the time the interrupt is active.
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參數(shù)描述 |
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| DS1486P-120+ | 功能描述:實時時鐘 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 時間格式:HH:MM:SS RTC 存儲容量: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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1486P-150 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:RAMified Watchdog Timekeeper |
| DS1487 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Low Power RS-485 1⁄4 Unit Load Multipoint Transceiver |
| DS1487M | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
| DS1487M/NOPB | 功能描述:RS-422/RS-485 接口 IC LO PR RS485/1/4 UNIT LOAD MULTIPT XCVR RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
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