Features
· 1,152-digit ´ 4-bit RAM
· I/O pins: 47
¾ High-current I/O pins (source: 10 mA max.): 4
¾ 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