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参数资料
| 型号： | DS1486-120 |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | Timer or RTC |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, DIP32 |
| 封装： | 0.740 INCH, EDIP-32 |
| 文件页数： | 14/14页 |
| 文件大小： | 425K |
| 代理商： | DS1486-120 |
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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PDF描述 |
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| DS1486P-120 | 1 TIMER(S), REAL TIME CLOCK, DMA34 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1486-120+ | 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 |
| DS1486-150 | 制造商:Maxim Integrated Products 功能描述:Real Time Clock, Non-Volatile, 32 Pin, Plastic, DIP |
| DS1486P | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:RAMified Watchdog Timekeeper |
| DS1486P-120 | 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 |
| DS1486P-120+ | 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 |
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