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DS1558Y PDF预览

DS1558Y

更新时间: 2024-09-27 22:34:39
品牌 Logo 应用领域
达拉斯 - DALLAS 计时器或实时时钟微控制器和处理器
页数 文件大小 规格书
18页 470K
描述
Watchdog Clock with NV RAM Control

DS1558Y 技术参数

是否Rohs认证: 不符合生命周期:Transferred
Reach Compliance Code:unknown风险等级:5.76
信息访问方法:PARALLEL中断能力:Y
JESD-30 代码:S-PQFP-G48JESD-609代码:e0
端子数量:48最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:QFP封装等效代码:TQFP48,.35SQ
封装形状:SQUARE封装形式:FLATPACK
电源:5 V认证状态:Not Qualified
子类别:Timer or RTC标称供电电压:5 V
表面贴装:YES技术:CMOS
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:GULL WING端子节距:0.5 mm
端子位置:QUAD最短时间:SECONDS
Base Number Matches:1

DS1558Y 数据手册

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DS1558  
Watchdog Clock with NV RAM Control  
www.maxim-ic.com  
FEATURES  
PIN CONFIGURATION  
CꢀIntegrated real-time clock (RTC), power-fail  
control circuit, and NV RAM controller  
CꢀClock registers are accessed identically to the  
static RAM; these registers are resident in the  
16 top RAM locations  
TOP VIEW  
N.C.  
1
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
A15  
VBAT1  
WE  
A18  
A16  
A14  
A12  
A7  
2
3
CꢀCentury register  
4
IRQ/FT  
A13  
A8  
CꢀGreater than 10 years of timekeeping and data  
retention in the absence of power with small  
lithium coin cell(s) and low-leakage SRAM  
CꢀPrecision power-on reset  
5
6
DS1558  
A6  
7
A9  
A5  
8
A11  
OE  
A4  
9
A3  
10  
11  
12  
A10  
CE  
A2  
CꢀProgrammable watchdog timer and RTC  
alarm  
A1  
OER  
CꢀBCD-coded year, month, date, day, hours,  
minutes, and seconds with automatic leap-  
year compensation valid up to the year 2100  
CꢀBattery voltage-level indicator flag  
CꢀPower-fail write protection allows for M10%  
TQFP  
Package Dimension Information:  
www.maxim-ic.com/DallasPackInfo  
V
CC power-supply tolerance  
CꢀUnderwriters Laboratory (UL) recognized  
PIN DESCRIPTION  
A0–A18  
- Address Input  
ORDERING INFORMATION  
DQ0–DQ7  
- Data Input/Outputs  
PIN-  
TOP  
IRQ /FT  
- Interrupt, Frequency-Test  
PART  
VCC (V)  
PACKAGE  
48 TQFP  
48 TQFP  
MARK  
DS1558B  
DS1558D  
Output (Open Drain)  
DS1558Y  
DS1558W  
5
RST  
- Power-On Reset Output  
(Open Drain)  
- Chip-Enable Input  
3.3  
CE  
CER  
OE  
- Chip-Enable RAM  
- Output-Enable Input  
- Output-Enable RAM  
OER  
WE  
- Write Enable  
VCC  
- Power-Supply Input  
- VCC Out to RAM  
- Ground  
VCCO  
GND  
N.C.  
- No Connection  
- Crystal Connection  
- +3V Battery Input  
- +3V Battery Input  
X1, X2  
VBAT1  
VBAT2  
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device  
may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata..  
1 of 18  
REV: 082503  

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