BUY W91330N https://www.utsource.net/itm/p/1167094.html
Tone/Pulse Dialer With Handfree Lock And Key Tone Functions/
The W91330N is a low-power, low-voltage, 8-bit microcontroller from Winbond. It is a DIP-18 package and features a 8051-compatible core, 8K bytes of Flash memory, 256 bytes of RAM, two 8-bit timers, two 16-bit timers, two UARTs, an 8-channel 10-bit A/D converter, a watchdog timer, and a programmable clock generator. The W91330N is suitable for applications such as home appliances, consumer electronics, automotive, and industrial control. It is also suitable for applications requiring low power consumption, such as battery-powered devices. (For reference only)