- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄9328 > DS1643-100 (Maxim Integrated Products)IC RAM TIMEKEEP NV 100NS 28-EDIP PDF資料下載
參數(shù)資料
| 型號： | DS1643-100 |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 12/17頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC RAM TIMEKEEP NV 100NS 28-EDIP |
| 標(biāo)準(zhǔn)包裝： | 12 |
| 類型： | 時鐘/日歷 |
| 特點： | 閏年，NVSRAM |
| 存儲容量： | 8KB |
| 時間格式： | HH:MM:SS（24 小時） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | 并聯(lián) |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 28-DIP 模塊（0.600"，15.24mm） |
| 供應(yīng)商設(shè)備封裝： | 28-EDIP |
| 包裝： | 管件 |
| 其它名稱： | DS1643100 |
DS1643/DS1643P
4 of 17
Figure 1. Block Diagram
Table 1. Truth Table
VCC
CE
CE2
OE
WE
MODE
DQ
POWER
VIH
X
Deselect
High Z
Standby
X
VIL
X
Deselect
High Z
Standby
VIL
VIH
X
VIL
Write
Data In
Active
VIL
VIH
VIL
VIH
Read
Data Out
Active
5V
10%
VIL
VIH
Read
High-Z
Active
<4.5V >
VBAT
X
Deselect
High-Z
CMOS Standby
<VBAT
X
Deselect
High-Z
Data Retention Mode
SETTING THE CLOCK
The 8-bit of the control register is the write bit. Setting the write bit to a 1, like the read bit, halts updates
to the DS1643 registers. The user can then load them with the correct day, date and time data in 24 hour
BCD format. Resetting the write bit to a 0 then transfers those values to the actual clock counters and
allows normal operation to resume.
STOPPING AND STARTING THE CLOCK OSCILLATOR
The clock oscillator may be stopped at any time. To increase the shelf life, the oscillator can be turned off
to minimize current drain from the battery. The OSC bit is the MSB for the seconds registers. Setting it to
a 1 stops the oscillator.
FREQUENCY TEST BIT
Bit 6 of the day byte is the frequency test bit. When the frequency test bit is set to logic 1 and the
oscillator is running, the LSB of the seconds register will toggle at 512Hz. When the seconds register is
being read, the DQ0 line will toggle at the 512Hz frequency as long as conditions for access remain valid
(i.e., CE low, OE low, CE2 high, and address for seconds register remain valid and stable).
DS1643/
DS1643P
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MCP4261-103E/ML | IC POT DGTL DUAL 10K SPI 16QFN |
| MS3450L18-13PY | CONN RCPT 4POS WALL MNT W/PINS |
| MCP4261-502E/ML | IC POT DGTL DUAL 5K SPI 16QFN |
| DS1315SN-5 | IC T-CHIP PHANTOM 5V IND 16-SOIC |
| MCP4262-503E/UN | IC RHEOSTAT 50K 2CH 10MSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1643-100+ | 功能描述:實時時鐘 NV Timekeeping RAM RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1643-12 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Real-Time Clock |
| DS1643-120 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Nonvolatile Timekeeping RAM |
| DS1643-15 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Real-Time Clock |
| DS1643-150 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Nonvolatile Timekeeping RAM |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。