參數(shù)資料
型號(hào)： DS3234S#T&R
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 14/21頁(yè)
文件大?。?/td> 0K
描述： IC RTC W/TCXO 20-SOIC
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 1,000
類型： 時(shí)鐘/日歷
特點(diǎn)： 警報(bào)器，閏年，NVSRAM，方波輸出，TCXO/晶體
存儲(chǔ)容量： 256B
時(shí)間格式： HH:MM:SS（12/24 小時(shí)）
數(shù)據(jù)格式： YY-MM-DD-dd
接口： SPI
電源電壓： 2 V ~ 5.5 V
電壓 - 電源，電池： 2 V ~ 3.8 V
工作溫度： 0°C ~ 70°C
安裝類型： 表面貼裝
封裝/外殼： 20-SOIC（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 20-SOIC W
包裝： 帶卷 (TR)
DS3234
Extremely Accurate SPI Bus RTC with
Integrated Crystal and SRAM
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 21
2010 Maxim Integrated Products
Maxim is a registered trademark of Maxim Integrated Products, Inc.
is a registered trademark of Maxim Integrated Products, Inc.
Revision History
REVISION
NUMBER
REVISION
DATE
DESCRIPTION
PAGES
CHANGED
0
2/06
Initial release
—
Clarified the behavior of tREC on initial power-up in the RST description of the Pin
Description
8
1
7/07
Corrected the POR for the BB32kHz bit from 0 to 1
15
Updated the Typical Operating Circuit
1
Removed the VPU parameter from the Recommended DC Operating Conditions
table and added verbiage about the pullup to the Pin Description table for
INT/SQW
2, 8
In the Electrical Characteristics table, added CRATE1 = CRATE0 = 0 to the IBATT
parameter and changed the symbols for Timekeeping Battery Current,
Temperature Conversion Current, and Data-Retention Current from IBAT, ITC, and
IBATTC to IBATT, IBATTC, and IBATTDR, respectively
3
In the AC Electrical Characteristics, changed the tCWH specification from 400ns
(max) to 400ns (min)
4
Added the Delta Time and Frequency vs. Temperature graph in the Typical
Operating Characteristics section
7
Updated the Block Diagram
9
Added the VBAT Operation section, improved some sections of text for the
Pushbutton Reset Function, Aging Offset Register (10h/90h), and Temperature
Registers (11h–12h) sections
10, 16
2
10/08
Corrected the description of when the countdown chain is reset in the Clock and
Calendar section
11
3
7/10
In the Absolute Maximum Ratings section, added the theta-JA and theta-JC
thermal resistances and Note 1, and changed the soldering temperature to
+260°C; changed the 10-hour bit to 20-hour bit in the Clock and Calendar section
and Table 1; updated the BBSQW bit description in the Control Register
(0Eh/8Eh) section; added the land pattern no. to the Package Information table
2–5, 8, 11, 12,
14, 20
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