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1338BC-31SRI8 PDF预览

1338BC-31SRI8

更新时间： 2024-02-02 02:31:10
品牌 Logo 应用领域
艾迪悌 - IDT 光电二极管外围集成电路
页数 文件大小 规格书
23页 427K
描述
Real Time Clock, Non-Volatile, 1 Timer(s), PDSO16, 0.300 INCH, ROHS COMPLIANT, SOIC-16

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1338BC-31SRI8 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOIC
包装说明：SOIC-16针数：16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.07
信息访问方法：I2C中断能力：N
JESD-30 代码：R-PDSO-G16JESD-609代码：e3
长度：10.3 mm湿度敏感等级：1
端子数量：16计时器数量：1
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：SOP
封装等效代码：SOP16,.4封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：260
电源：3.3 V认证状态：Not Qualified
座面最大高度：2.65 mm子类别：Timer or RTC
最大供电电压：5.5 V最小供电电压：2.45 V
标称供电电压：3.3 V表面贴装：YES
技术：CMOS温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn) - annealed端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
最短时间：SECONDS处于峰值回流温度下的最长时间：30
易失性：NO宽度：7.5 mm
uPs/uCs/外围集成电路类型：TIMER, REAL TIME CLOCKBase Number Matches：1

1338BC-31SRI8 数据手册

 浏览型号1338BC-31SRI8的Datasheet PDF文件第3页浏览型号1338BC-31SRI8的Datasheet PDF文件第4页浏览型号1338BC-31SRI8的Datasheet PDF文件第5页浏览型号1338BC-31SRI8的Datasheet PDF文件第7页浏览型号1338BC-31SRI8的Datasheet PDF文件第8页浏览型号1338BC-31SRI8的Datasheet PDF文件第9页 
IDT1338B-31  
REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM  
RTC  
RTC and RAM Address Map  
The address map for the RTC and RAM registers shown in Table 3. The RTC registers and control register are located in  
address locations 00H to 07H The RAM registers are located in address locations 08H to 3FH. During a multibyte access,  
when the register pointer reaches 3FH (the end of RAM space) it wraps around to location 00H (the beginning of the clock  
2
space). On an I C START, STOP, or register pointer incrementing to location 00H, the current time and date is transferred to  
a second set of registers. The time and date in the secondary registers are read in a multibyte data transfer, while the clock  
continues to run. This eliminates the need to re-read the registers in case of an update of the main registers during a read.  
Table 3. RTC and RAM Address Map  
Address  
00H  
Bit 7  
CH  
0
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
Function  
Seconds  
Minutes  
Range  
00 - 59  
00 - 59  
10 seconds  
10 minutes  
AM/PM  
Seconds  
01H  
Minutes  
Hour  
1 - 12  
+ AM/PM  
00 - 23  
02H  
0
12/24  
10 hour  
0
Hours  
10 hour  
03H  
04H  
05H  
06H  
07H  
0
0
0
0
0
0
0
0
0
Day  
Day  
Date  
1 - 7  
10 date  
Date  
Month  
Year  
01 - 31  
01 - 12  
00 - 99  
0
10 month  
Month  
10 year  
OSF  
Year  
OUT  
0
SQWE  
0
RS1  
RS0  
Control  
RAM 56 x 8  
08H -  
3FH  
00H - FFH  
Note: Bits listed as “0” should always be written and read as 0.  
Clock and Calendar  
Table 3 shows the address map of the RTC registers. The  
time and date information is obtained by reading the  
appropriate register bytes. The time and calendar are set or  
initialized by writing the appropriate register bytes. The  
contents of the time and calendar registers are in the BCD  
format. Bit 7 of Register 0 is the clock halt (CH) bit. When  
this bit is set to 1, the oscillator is disabled. When cleared to  
0, the oscillator is enabled. The clock can be halted  
whenever the timekeeping functions are not required, which  
date registers, the user buffers are synchronized to the  
internal registers on any start or stop, and when the address  
pointer rolls over to zero. The countdown chain is reset  
whenever the seconds register is written. Write transfers  
occurs on the acknowledge pulse from the device. To avoid  
rollover issues, once the countdown chain is reset, the  
remaining time and date registers must be written within one  
second. If enabled, the 1 Hz square-wave output transitions  
high 500 ms after the seconds data transfer, provided the  
oscillator is already running.  
decreases V  
current.  
BAT  
The day-of-week register increments at midnight. Values  
that correspond to the day of week are user-defined but  
must be sequential (i.e., if 1 equals Sunday, then 2 equals  
Monday, and so on). Illogical time and date entries result in  
undefined operation.  
Note that the initial power-on state of all registers,  
unless otherwise specified, is not defined. Therefore, it  
is important to enable the oscillator (CH = 0) during  
initial configuration.  
The IDT1338B-31 runs in either 12-hour or 24-hour mode.  
Bit 6 of the hours register is defined as the 12-hour or  
24-hour mode-select bit. When high, the 12-hour mode is  
selected. In the 12-hour mode, bit 5 is the AM/PM bit, with  
When reading or writing the time and date registers,  
secondary (user) buffers are used to prevent errors when  
the internal registers update. When reading the time and  
IDT™ REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM 6  
IDT1338B-31 REV A 112309  
1...3456789...23

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