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参数资料
| 型号： | DS12R885 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | RTC with Constant-Voltage Trickle Charger |
| 中文描述： | 带有恒压涓流充电器的RTC |
| 文件页数： | 7/22页 |
| 文件大小： | 1093K |
| 代理商： | DS12R885 |
D
RTC with Constant-Voltage Trickle Charger
_____________________________________________________________________
7
POWER-UP/POWER-DOWN CHARACTERISTICS
(T
A
= -40°C to +85°C) (Note 1)
PARAMETER
SYMBOL
t
RPU
CONDITIONS
MIN
20
TYP
MAX
200
UNITS
ms
Recovery at Power-Up
V
CC
Fall Time; V
PF(MAX)
to
V
PF(MIN)
t
F
300
μs
V
CC
Rise Time; V
PF(MIN)
to
V
PF(MAX)
t
R
0
μs
CAPACITANCE
(T
A
= +25°C)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Capacitance on All Input Pins
Except X1 and X2
C
IN
(Note 9)
10
pF
Capacitance on
IRQ
, SQW, and
DQ Pins
C
IO
(Note 9)
10
pF
AC TEST CONDITIONS
PARAMETER
TEST CONDITIONS
Input Pulse Levels (-5)
Input Pulse Levels (-33)
Output Load Including Scope and Jig (-5)
Output Load Including Scope and Jig (-33)
Input and Output Timing Measurement Reference Levels
Input-Pulse Rise and Fall Times
0 to 3.0V
0 to 2.7V
50pF + 1TTL Gate
25pF + 1TTL Gate
Input/Output: V
IL
maximum and V
IH
minimum
5ns
WARNING:
Negative undershoots below -0.3V while the part is in battery-backed mode may cause loss of data.
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
Limits at -40°C are guaranteed by design and not production tested.
All voltages are referenced to ground.
All outputs are open.
Specified with
CS
= DS = R/
W
=
RESET
= V
CC
; MOT, AS, AD0–AD7 = 0; V
BACKUP
open.
Applies to the AD0 to AD7 pins, the
IRQ
pin, and the SQW pin when each is in a high-impedance state.
The MOT pin has an internal 20k
pulldown.
Measured with a 32.768kHz crystal attached to X1 and X2.
Measured with a 50pF capacitance load.
Guaranteed by design. Not production tested.
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| DS12R885-33 | RTC with Constant-Voltage Trickle Charger |
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| DS12R887 | RTC with Constant-Voltage Trickle Charger |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS12R885-33 | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK MULTIPLEXED 114BYTE - Bulk |
| DS12R885-5 | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK MULTIPLEXED 114BYTE - Bulk |
| DS12R885S-33 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| DS12R885S-33/T&R | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK MULTIPLEXED 114BYTE 24SOIC W - Tape and Reel |
| DS12R885S-33+ | 功能描述:实时时钟 RTC w/Constant V 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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