DS1200
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
PIN ASSIGNMENT
16-Pin SO (300mil) See Mech. Drawings Section
APPLICATIONS
Software Authorization puter Identification System Access Control Secure Personnel Areas Calibration Automatic System Setup Traveling Work Record
PIN DESCRIPTION
VCC RST DQ CLK GND VBAT NC
- +5V
- Reset
- Data Input/Output
- Clock
- Ground
- 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...
