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參數(shù)資料
| 型號(hào)： | DS1691 |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | Timer or RTC |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDIP28 |
| 封裝： | 0.740 INCH, ENCAPSULATED, DIP-28 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大?。?/td> | 394K |
| 代理商： | DS1691 |
DS1688/DS1691
3 of 6
PIN DESCRIPTION
PIN
SO
EDIP
NAME
FUNCTION
1
VBAUX
Auxiliary Battery Supply
2, 3
—
X1, X2
Crystal Input, Crystal Output
4
RCLR
Active-Low RAM Clear Input
5–12
AD0–AD7
Muxed Address/Data Bus
13
PWR
Active-Low Power-On Interrupt Output
14, 19
14
GND
Ground
15
KS
Active-Low Kickstart Input
16
CS
Active-Low Chip Select Input
17
ALE
Address Strobe
18
WR
Active-Low Write Data Strobe
20
RD
Active-Low Read Data Strobe
21
PSEL
+3V or +5V Power Select
22
IRQ
Active-Low Interrupt Request Output
23
—
VBAT
Battery + Supply
24
SQW
Square-Wave Output. This signal functions identical to the
DS1689/DS1693 with an exception occurring at power-up. A
32kHz square wave is output on this pin, tREC, after a power-up
condition has been detected. This condition sets the following
bits, enabling the 32kHz output: DV1 = 1, SQWE = 1, and E32K
= 1. The square wave is output on this pin if either SQWE = 1 or
E32K = 1.
25
VCCO
RAM Power-Supply Output
26
VCCI
+3V or +5V Main Supply
27
CEO
Active-Low RAM Chip Enable Out
28
CEI
Active-Low RAM Chip Enable In
—
2, 3, 19,
23
N.C.
No Connection
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1691 WAF | 制造商:Texas Instruments 功能描述: |
| DS1691/1692 WAF | 制造商:Texas Instruments 功能描述: |
| DS1691A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:(RS-422/RS-423) Line Drivers with TRI-STATE Outputs |
| DS1691AJ/883 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:(RS-422/RS-423) Line Drivers with TRI-STATE Outputs |
| DS1691AJ/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Line Driver |
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