The document describes the General Instrument AY-5-3600, an integrated circuit designed to encode single pole single throw keyboard closures into a usable 10-bit code. The device contains a 3600-bit Read Only Memory (ROM) and logic necessary for encoding up to 90 keys with features such as N-key rollover or lockout operation.
The datasheet provides detailed information on pin configuration options, including external clock versus internal oscillator modes, and various control inputs like Lockout/Rollover selection. It also lists comprehensive electrical characteristics, maximum ratings, and timing diagrams for the device's operation.
| Memory Size | 3600 bit Read Only Memory |
|---|---|
| Output Bits | 10 output data bits |
| Clock Frequency (Typical) | 50 kHz |
| Supply Voltage (Vcc) | +5 Volts |
No, the selected coding and options are defined during the manufacture of the chip.
The device operates within a range of -0°C to +70°C.
A minimum of 90 clock cycles is required for switch closure.