Solutions Cubed MEM Key
The MEM Key is a fully programmable keypad encoder. Using a jumper, the MEM Key supports either a simple serial communication protocol or the standard PC/AT communication protocol. In either communication mode, it can decode key matrixes of up to 4 columns by 5 rows. The rows and columns can be programmed to match the row-column configuration of any off the shelf keypad.
The value returned by the MEM Key can be programmed to any standard value. The debounce time and typematic rate are fully programmable. All programmable values are stored in non-volatile memory so they are saved when power is off.
When operating with the serial protocol, the MEM Key communicates at 2400 baud, 8N1, LSB first, asynchronous. This can be either a 1 wire or a 2 wire interface.
In addition, there are 64 bytes of EEPROM memory which is made available to the user as scratch pad space.
- 4X5 Matrix Programmable Rows and Columns
- Programmable key values
- PC/AT or serial output
- Automatic or polled key reporting
- Programmable debounce and typematic times
- 64 Bytes of user-accessible EEPROM
- Standard TTL levels
- No external components
- Easy-to-use SIP package