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參數資料
| 型號： | CYM1821 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | 16K x 32 Static RAM Module(16K x 32 靜態RAM模塊) |
| 中文描述： | 16K的× 32靜態RAM模塊（16K的× 32靜態RAM的模塊） |
| 文件頁數： | 1/15頁 |
| 文件大小： | 114K |
| 代理商： | CYM1821 |
DS1821
Programmable Digital Thermostat
DS1821
062498 1/15
FEATURES
Requires no external components
Measures temperatures from –55
°
C to +125
°
C in 1
°
C
increments. Fahrenheit equivalent is –67
°
F to +257
°
F
in 1.8
°
F increments
Converts temperature to digital word in 1 second
(max.)
Thermostatic settings are user definable and nonvol-
atile
Available in 3–pin PR35, TO–220, and 8–pin SOIC
packages
Applications include thermostatic controls, industrial
systems, consumer products, thermometers, or any
thermally sensitive system
PIN ASSIGNMENT
DNC
V
DD
NC
NC
GND
DQ
NC
DNC
1
2
3
4
8
7
6
5
DS1821S
8See Mech. Drawing
Section
DS1821
V
G
D
DS1821T
TO–2Section
3
2
1
G
D
V
DALLAS
DS1821
PR3DS1821
See Section
BOTTOM VIEW
PIN DESCRIPTION
GND
DQ
V
DD
NC
DNC
– Ground
– Data In/Out
– Power Supply Voltage +5V
– No Connect
– Do Not Connect
DESCRIPTION
The DS1821 Programmable Digital Thermostat pro-
vides a thermal alarm logic output when the tempera-
ture of the device exceeds a user–defined temperature
TH. The output remains active until the temperature
drops below user defined temperature TL, allowing for
any hysteresis necessary.
User–defined temperature settings are stored in non–
volatile memory, so parts can be programmed prior to
insertion in a system. Communication to/from the
DS1821 is accomplished through the DQ pin in a pro-
gramming mode; this same pin is used in operation as
the thermostat output.
相關PDF資料 |
PDF描述 |
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| CYM1831 | 64K x 32 Static RAM Module |
| CYM1831PM-15C | 64K x 32 Static RAM Module |
| CYM1831PM-20C | 64K x 32 Static RAM Module |
| CYM1831PM-25C | 64K x 32 Static RAM Module |
| CYM1831PM-35C | 64K x 32 Static RAM Module |
相關代理商/技術參數 |
參數描述 |
|---|---|
| CYM1821LPM-20C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x32 SRAM Module |
| CYM1821LPM-25C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x32 SRAM Module |
| CYM1821LPM-35C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x32 SRAM Module |
| CYM1821LPM-45C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x32 SRAM Module |
| CYM1821LPZ-20C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x32 SRAM Module |
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