DESCRIPTION
The 4512 Group is a 4-bit single-chip microcomputer designed with CMOS technology. Its CPU is that of the 4500 series using a simple, high-speed instruction set. The computer is equipped with serial I/O, four 8-bit timers (each timer has a reload register), and 10-bit A-D converter.
The various microcomputers in the 4512 Group include variations of the built-in memory size as shown in the table below.

FEATURES
● Minimum instruction execution time ................................ 0.75 µs
   (at 4.0 MHz oscillation frequency, in high-speed mode, VDD = 4.0 V to 5.5 V)
● Supply voltage ..... 4.0 V to 5.5 V (at 4.2 MHz oscillation frequency)
● Timers
   Timer 1 ...................................... 8-bit timer with a reload register
   Timer 2 ...................................... 8-bit timer with a reload register
   Timer 3 ...................................... 8-bit timer with a reload register
   Timer 4 ...................................... 8-bit timer with a reload register
● Interrupt ........................................................................ 8 sources
● Serial I/O....................................................................... 8 bit-wide
● A-D converter .................. 10-bit successive comparison method
● Watchdog timer ................................................................. 16 bits
● Clock generating circuit (ceramic resonator)
● LED drive directly enabled (port D)

APPLICATION
   Electrical household appliance, consumer electronic products, office automation equipment, etc.