HMCS45C

The HMCS45C is the CMOS 4-bit single chip microcomputer which contains ROM, RAM, I/O and Timer/Event Counter on single chip. The HMCS45C is designed to perform efficient controller function as well as arithmetic function for both binary and BCD data. The CMOS technology of the HMCS45C provides the flexibility of microcomputers for battery powered and battery back-up applications.

FEATURES

• 4-bit Architecture
• 2,048 Words of Program ROM (10 bits/Word) 128 Words of Pattern ROM (10 bits/Word)
• 160 Digits of Data RAM (4 bits/Digit)
• 44 I/O Lines and 2 External Interrupt Lines
• Timer/Event Counter
• Instruction Cycle Time: HMCS45C: 10μS HMCS45CL: 20 μs
• All Instructions except One lnstruction; Single Word and Single Cycle
• BCD Arithmetic Instructions
• Pattern Generation Instruction — Table Look Up Capability —
• Powerful Interrupt Function
  • 3 Interrupt Sources
    • 2 Extemal Interrupt Lines
    • Timer/Event Counter Multiple Interrupt Capability
• Bit Manipulation Instructions for Both RAM and I/O
• Option of I/O Configuration Selectable on Each Pin; Pull Up MOS or CMOS or Open Drain
• Built-in Oscillator
• Built-in Power-on Reset Circuit (HMCS45C only)
• Low Operating Power Dissipation; 2mW typ.
• Stand-by Mode (Halt Mode); 50 μW max.
• CMOS Technology
• Single Power Supply: HMCS45C: 5V±10% / HMCS45CL: 2.5V to 5.5V