DS1218：Nonvolatile Controller
The DS1218 Nonvolatile Controller Chip supplies circuitry required to render standard CMOS RAM nonvolatile. VCC is monitored using a precise comparator that detects power-fail and inhibits chip-enable holding a write-protect status until power supplies return to nominal levels. The DS1218 switches active power supplies between VCC and a battery source, whichever is greater. The switch has a voltage drop of less than 0.2V.
Key Features
| DS1218: Pin Assignment |
DataSheet
| title | Download file |
|---|---|
| DS1218 Data Sheet | DS1218.pdf |
Parametrics
| Part Number | CE Cntrl. | Smart Socket w/Int. Batt. | Li Batt. Monitor | Pwr. Fail Out | RAMs Controlled | VSUPPLY (V) | Package/Pins | Oper. Temp. (°C) | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|
| See Notes | |||||||||
| DS1218 | Yes | No | No | No | 1 | 5 | PDIP(N)/8 SOIC(N)/8 | 0 to +70 | $6.12 @1k |
Ordering Information
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
|---|---|---|---|---|---|
| DS1218 | No Longer Available | DS1218+ | PDIP(N),;8 pin;79.7 mm² | 0°C to +70°C | No |
| DS1218+ | Active | PDIP(N),;8 pin;79.7 mm² | 0°C to +70°C | Lead Free | |
| DS1218S | No Longer Available | DS1218S+ | SOIC(N),;8 pin;30.9 mm² | 0°C to +70°C | No |
| DS1218S+ | Active | SOIC(N),;8 pin;30.9 mm² | 0°C to +70°C | Lead Free | |
| DS1218S+T&R | Active | SOIC(N),;8 pin;30.9 mm² | 0°C to +70°C | Lead Free | |
| DS1218S/T&R | No Longer Available | DS1218S+T&R | SOIC(N),;8 pin;30.9 mm² | 0°C to +70°C | No |
| DS1218S/T&R/ | No Longer Available | SOIC(N),;8 pin;30.9 mm² | 0°C to +70°C | No |
- DS1218.pdf DS1218
- NV SRAM Frequently Asked Questions DS1350Y
- DS1218.pdf DS1218
