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参数资料
| 型号： | DS1318E+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/15页 |
| 文件大小： | 0K |
| 描述： | IC COUNTER ELAPSED TIME 24-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 62 |
| 类型： | 耗用时间计数器 |
| 特点： | 警报器，方波输出 |
| 时间格式： | 二进制 |
| 数据格式： | 二进制 |
| 接口： | 并联 |
| 电源电压： | 3 V ~ 3.6 V |
| 电压 - 电源，电池： | 1.6 V ~ 3.7 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 24-TSSOP |
| 包装： | 管件 |
| 产品目录页面： | 1433 (CN2011-ZH PDF) |
Special-Purpose Registers
The DS1318 has three additional registers (control A,
control B, and status) that control the clock, alarms,
square wave, and interrupt output. The subseconds0
register has a square-wave synchronization (SQWS) bit
in the bit 0 location. Writing the SQWS bit to 1 clears
the square-wave prescaler and holds it in reset. Only
the frequencies below 4096Hz are reset. Writing the bit
back to 0 takes the prescaler out of reset and starts the
square wave running.
Bit 7: Transfer Enable (TE). When TE is set to logic 1,
the DS1318 continues to update the user copy of the
time value as it receives 4,096Hz clock pulses from the
oscillator. To ensure reading valid time data from the
part, the user should set TE to logic 0 before reading
registers 00–05h. TE must be enabled (logic 1) for at
least 244s to ensure that a transfer occurs. Note that
because of the 244s restriction, sequential values of
the subseconds0 register cannot be read when TE
is used.
It is possible that TE could be set to logic 0 while a
transfer is taking place. In that case, the buffered data
could be invalid. To prevent this, the UIP bit, described
later, should be used. To write data to the clock regis-
ters, the user should set TE to logic 0, write the regis-
ters, and set TE to logic 1.
Bit 6: Enable Oscillator (ENOSC). When ENOSC is set
to logic 1, the DS1318 crystal oscillator becomes
enabled. Actual startup time for the oscillator depends on
many external variables and is not a specified parameter.
Bits 5, 4: Clock Configuration 1, 0 (CCFG1, CCFG0).
These bits determine which of the four possible modes
the DS1318 uses to clock its timekeeping registers:
Bit 3: External Polarity (EPOL). This bit controls the
polarity on the EXT pin input when the CCFG1 and
CCFG0 bits are equal to 0 and 1, respectively. When
EPOL is set to logic 1, the registers count when the EXT
pin is 1. When EPOL is set to logic 0, the registers
count when the EXT pin is logic 0.
Bit 2: Square-Wave Enable (SQWE). When SQWE is
set to logic 1, a frequency determined by the SRSx bits
in control register B (0Bh) is output on the SQW pin.
When SQWE is logic 0, the SQW pin is always 0. When
the part is in power-fail, the SQW pin is always high-
impedance. The square-wave output uses a separate
prescaler from the one used by PF, IRQ, UIP, and the
up counter. The SQWS bit in control register A can be
used to synchronize the square-wave output to within
244s of the other events.
Bit 1: Periodic Interrupt Enable (PIE). When PIE is set
to logic 1, the DS1318 sets the IRQ pin low whenever
the PF flag is set to 1. When PIE is 0, the PF flag does
not affect the IRQ pin.
Bit 0: Alarm Interrupt Enable (AIE). When AIE is set to
logic 1, the DS1318 sets the IRQ pin low whenever the
ALMF flag is set to 1. When AIE is 0, the ALMF flag
does not affect the IRQ pin.
DS1318
Parallel-Interface Elapsed Time Counter
____________________________________________________________________
11
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
TE
ENOSC
CCFG1
CCFG0
EPOL
SQWE
PIE
AIE
Control Register A (0Ah)
CCFG1
CCFG0
MODE
0
Always clocks the registers (normal mode)
01
Clocks when the EXT pin is “active” and
VCC is greater than VPF (event-timer mode,
depends on EPOL bit)
10
Clocks registers when part is running on
VCC
11
Clocks registers when part is running on
VBAT
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1318E/GG8 | 制造商:Maxim Integrated Products 功能描述:44 BIT PARALLEL INTFACE ETC 24P TSS - Rail/Tube |
| DS1318E+ | 功能描述:实时时钟 Parallel-Interface Elapsed Time Cntr 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 |
| DS1318E+T&R | 制造商:Maxim Integrated Products 功能描述:44 BIT PRLLEL INTFC ETC TRL LF - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC COUNTER ELAPSED TIME 24TSSOP |
| DS1318E+T&R | 功能描述:实时时钟 PARALLEL-INTERFACE ELAPSED TIME COUNTER 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 |
| DS13-1Y | 功能描述:固态继电器-工业安装 RoHS:否 制造商:Crydom 控制电压范围:4 VDC to 32 VDC 负载电压额定值:7 VDC to 72 VDC 负载电流额定值:160 A 触点形式: 输出设备:SSR 安装风格:Panel |
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