OM5284

INTEGRATED CIRCUITS OM5234/OM5284 CMOS single-chip 8-bit microcontrollers Preliminary specification 1996 Nov 01 Philips Semiconductors Philips Semiconductors Preliminary specification CMOS single-chip 8-bit microcontrollers OM5234/OM5284 DESCRIPTION The OM5234 and OM5284 single-chip 8-bit microcontrollers are manufactured in an advanced CMOS process and are derivatives of the 80C51 microcontroller family. The OM5234 and OM5284 are pre-programmed devices for specific applications. Unless specifically stated otherwise, all references to OM5234 apply equally to OM5284. The OM5234 contains a non-volatile 16k × 8 read-only program memory, a volatile 256 × 8 read/write data memory, four 8-bit I/O ports, two 16-bit timer/event counters (identical to the timers of the 80C51), a multi-source, two-priority-level, nested interrupt structure, UART and on-chip oscillator and timing circuits. FEATURES 80C51 central processing unit 6k × 8 ROM 256 × 8 RAM Two standard 16-bit timer/counters Four 8-bit I/O ports Full-duplex UART facilities Power control modes – Idle mode – Power-down mode ROM code protection ORDERING INFORMATION OM5234 / F T P / YYY Device OM5234 Frequency Range F = 3.5 to 16MHz I = 3.5 to 24MHz Temperature Range B = 0 to 70°C PART NUMBER OM5234/FBB/YYY OM5234/FBP/YYY OM5234/FBA/YYY OM5284EBYY OM5284EAYY OM5284EPYY ROM code for application 5XX, etc. Package designator A = Plastic Leaded Chip Carrier B = Plastic Quad Flat Package P = Plastic Dual In-Li...