S87C752-5F28 8-Bit microcontroller by Signetics. Features: PWM and A/D Memory: 2K x 8 ROM, 64 x 8 RAM Speed: 3.5~16MHz Package: 28-pin windowed CERDIP Download Signetics S87C752-5F28 datasheet: Status: NOS (New Old Stock) Individually tested components: YES (memory only) RoHS compliant: no