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参数资料
| 型号： | DS1340U-3+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/16页 |
| 文件大小： | 0K |
| 描述： | IC RTC I2C W/CHARGER 3V 8-USOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 3,000 |
| 类型： | 时钟/日历 |
| 特点： | 闰年，方波输出，涓流充电器 |
| 时间格式： | HH:MM:SS（24 小时） |
| 数据格式： | YY-MM-DD-dd |
| 接口： | I²C，2 线串口 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 电压 - 电源，电池： | 1.3 V ~ 3.7 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 带卷 (TR) |
I2C RTC with Trickle Charger
4
Maxim Integrated
DS1340
POWER-UP/POWER-DOWN CHARACTERISTICS
(TA = -40°C to +85°C) (Figure 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Recovery at Power-Up
tREC
(Note 17)
2
ms
VCC Fall Time; VPF(MAX) to
VPF(MIN)
tVCCF
300
s
VCC Rise Time; VPF(MIN) to
VPF(MAX)
tVCCR
0s
WARNING: Under no circumstances are negative undershoots, of any amplitude, allowed when device is in battery-backup mode.
Note 1:
Limits at -40°C are guaranteed by design and not production tested.
Note 2:
All voltages are referenced to ground.
Note 3:
Measured at VCC = typ, VBACKUP = 0V, register 08h = A5h.
Note 4:
The use of the 250
Ω trickle-charge resistor is not allowed at VCC > 3.63V and should not be enabled.
Note 5:
Measured at VCC = typ, VBACKUP = 0V, register 08h = A6h.
Note 6:
Measured at VCC = typ, VBACKUP = 0V, register 08h = A7h.
Note 7:
ICCA—SCL clocking at max frequency = 400kHz.
Note 8:
Specified with I2C bus inactive.
Note 9:
Measured with a 32.768kHz crystal attached to the X1 and X2 pins.
Note 10:
Limits at +25°C are guaranteed by design and not production tested.
Note 11:
After this period, the first clock pulse is generated.
Note 12:
A device must internally provide a hold time of at least 300ns for the SDA signal (referred to as the VIH(MIN) of the SCL
signal) to bridge the undefined region of the falling edge of SCL.
Note 13:
The maximum tHD:DAT only has to be met if the device does not stretch the low period (tLOW) of the SCL signal.
Note 14:
A fast-mode device can be used in a standard-mode system, but the requirement tSU:DAT
≥ to 250ns must be met. This
is automatically the case if the device does not stretch the low period of the SCL signal. If such a device does stretch the
low period of the SCL signal, it must output the next data bit to the SDA line tR MAX + tSU:DAT = 1000 + 250 = 1250ns
before the SCL line is released.
Note 15:
CB—total capacitance of one bus line in pF.
Note 16:
The parameter tOSF is the period of time the oscillator must be stopped for the OSF flag to be set over the 0V
≤ VCC ≤
VCCMAX and 1.3V
≤ VBAT ≤3.7V range.
Note 17:
This delay applies only if the oscillator is enabled and running. If the oscillator is disabled or stopped, no power-up delay
occurs.
SCL
NOTE: TIMING IS REFERENCED TO VIL(MAX) AND VIH(MIN).
SDA
STOP
START
REPEATED
START
tBUF
tHD:STA
tHD:DAT
tSU:DAT
tSU:STO
tHD:STA
tSP
tSU:STA
tHIGH
tR
tF
tLOW
Figure 1. Data Transfer on I2C Serial Bus
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相关代理商/技术参数 |
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|---|---|
| DS1340Z-18 | 功能描述:实时时钟 I2C RTC w/Trickle Charger 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 |
| DS1340Z-18+ | 功能描述:实时时钟 I2C RTC w/Trickle Charger 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 |
| DS1340Z-3 | 功能描述:实时时钟 I2C RTC w/Trickle Charger 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 |
| DS1340Z-3/T&R | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 8SOIC - Tape and Reel |
| DS1340Z-3+ | 功能描述:实时时钟 I2C RTC w/Trickle Charger 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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