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參數(shù)資料
型號: DS12CR887-33+
廠商: Maxim Integrated Products
文件頁數(shù): 21/23頁
文件大?。?/td> 0K
描述: IC RTC W/RAM 128 BYTE 24-EDIP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 31
類型: 時鐘/日歷
特點: 警報器,閏年,NVSRAM,方波輸出,涓流充電器
存儲容量: 114B
時間格式: HH:MM:SS(12/24 小時)
數(shù)據(jù)格式: YY-MM-DD-dd
接口: 并聯(lián)
電源電壓: 2.97 V ~ 3.63 V
工作溫度: -40°C ~ 85°C
安裝類型: 通孔
封裝/外殼: 24-DIP 模塊(0.600",15.24mm)
供應(yīng)商設(shè)備封裝: 24-EDIP
包裝: 管件
產(chǎn)品目錄頁面: 1433 (CN2011-ZH PDF)
DS12R885/DS12CR887/DS12R887
RTCs with Constant-Voltage Trickle Charger
7
Maxim Integrated
POWER-UP/POWER-DOWN CHARACTERISTICS
(TA = -40°C to +85°C) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Recovery at Power-Up
tRPU
20
200
ms
VCC Fall Time; VPF(MAX) to
VPF(MIN)
tF
300
s
VCC Rise Time; VPF(MIN) to
VPF(MAX)
tR
0s
CAPACITANCE
(TA = +25°C)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Capacitance on All Input Pins
Except X1 and X2
CIN
(Note 9)
10
pF
Capacitance on IRQ, SQW, and
DQ Pins
CIO
(Note 9)
10
pF
DATA RETENTION (DS12CR887)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Expected Data Retention
tDR
TA = +25°C
5
Years
AC TEST CONDITIONS
PARAMETER
TEST CONDITIONS
Input Pulse Levels (-5)
0 to 3.0V
Input Pulse Levels (-33)
0 to 2.7V
Output Load Including Scope and Jig (-5)
50pF + 1TTL Gate
Output Load Including Scope and Jig (-33)
25pF + 1TTL Gate
Input and Output Timing Measurement Reference Levels
Input/Output: VIL maximum and VIH minimum
Input-Pulse Rise and Fall Times
5ns
WARNING: Negative undershoots below -0.3V while the part is in battery-backed mode may cause loss of data.
Note 1:
Limits at -40°C are guaranteed by design and not production tested.
Note 2:
All voltages are referenced to ground.
Note 3:
All outputs are open.
Note 4:
Specified with CS = DS = R/W = RESET = VCC; MOT, AS, AD0–AD7 = 0; VBACKUP open.
Note 5:
Applies to the AD0 to AD7 pins, the IRQ pin, and the SQW pin when each is in a high-impedance state.
Note 6:
The MOT pin has an internal 20k
Ω pulldown.
Note 7:
Measured with a 32.768kHz crystal attached to X1 and X2.
Note 8:
Measured with a 50pF capacitance load.
Note 9:
Guaranteed by design. Not production tested.
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