FEATURES
• Program memory (ROM)
• μPD67B: 1,002 × 10 bits
• μPD68B: 2,026 × 10 bits
• Data memory (RAM): 32 × 4 bits
• On-chip carrier generator for infrared remote control: Each high-/low-level width can be set from 250 ns to 64
μs (@ fX = 4 MHz operation) via modulo registers
• 9-bit programmable timer: 1 channel
• Instruction execution time: 16 μs (@ fX = 4 MHz operation: ceramic oscillation)
• Stack level: 1 level (stack RAM is also used as data memory RF)
• I/O pins (KI/O): 8
• Input pins (KI): 4
• Sense input pins (S0, S2): 2
• S1/LED pin (I/O): 1 (when in output mode, this is the remote control transmission display pin)
• Power supply voltage: VDD = 1.65 to 3.6 V
• Operating ambient temperature: TA = –40 to +85°C
• Oscillation frequency: fX = 3.5 to 4.5 MHz
• On-chip POC circuit and RAM retention detector