HCD404669 - Hitachi Semiconductor

HCD404669 Low-Voltage AS Microcomputers

The HD404669 Series microcomputers incorporate a DTMF generation circuit, two comparators, and a serial interface on chip. They also provide input and output pins with large current handling capacities. Thus they are 4-bit single-chip microcomputers that are optimal for use in multifunction telephones, cordless telephones, and other communications equipment..

Features

• 1,152-digit × 4-bit RAM
• I/O pins: 47  High-current I/O pins (source: 10 mA max.): 4  High-current I/O pins (sink: 15 mA max.): 5
• Timer counters: 3
• Input capture: one 8-bit channel
• Timer outputs: 2 (with PWM output capability)
• Event input: 1 (edge-programmable)
• Clock synchronous 8-bit serial interface: 1
• DTMF generation circuit
• Comparator: 2 channels
• System clock oscillator Ceramic oscillator, crystal oscillator, or external clock operation possible HD404669 Series
• Subsystem clock oscillator 32.768 kHz crystal oscillator for realtime clock use
• Interrupts  External: 5.