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PDF DS1200 Data sheet ( Hoja de datos )
| Número de pieza | DS1200 | |
| Descripción | Serial RAM Chip | |
| Fabricantes | Dallas Semiconducotr | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de DS1200 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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FEATURES
§ 1024 Bits of Read/Write Memory
§ Low Data Retention Current for Battery
Backup Applications
§ Four Million Bits/Second Data Rate
§ Single-Byte or Multiple-Byte Data Transfer
Capability
§ No Restrictions on the Number of Write
Cycles
§ Low-Power CMOS Circuitry
APPLICATIONS
§ Software Authorization
§ Computer Identification
§ System Access Control
§ Secure Personnel Areas
§ Calibration
§ Automatic System Setup
§ Traveling Work Record
DS1200
Serial RAM Chip
PIN ASSIGNMENT
16-Pin SO (300mil)
See Mech. Drawings Section
PIN DESCRIPTION
VCC - +5V
RST - Reset
DQ - Data Input/Output
CLK
- Clock
GND
- Ground
VBAT
NC
- Battery (+)
- No Connection
DESCRIPTION
The DS1200 serial RAM chip is a miniature read/write memory that can randomly access individual
8-bit strings (bytes) or sequentially access the entire 1024-bit contents (burst). Interface cost to a
microprocessor is minimized by on-chip circuitry, which permits data transfers with only three signals:
CLK, RST , and DQ.
Nonvolatility can be achieved by connecting a battery of 2V to 4V at the battery input VBAT. A load of
0.5mA should be used to size the external battery for the required data retention time. If nonvolatility is
not required the VBAT pin should be grounded.
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Figure 4. READ/WRITE DATA TRANSFER
DS1200
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5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet DS1200.PDF ] | |
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