4514 Group

·Minimum instruction execution time ................................ 0.75 ms (at 4.0 MHz oscillation frequency, in high-speed mode, VDD = 4.0 V to 5.5 V)
·Supply voltage
• Middle-speed mode ...... 2.5 V to 5.5 V (at 4.2 MHz oscillation frequency, for Mask ROM version and One Time PROM version) ...... 2.0 V to 5.5 V (at 3.0 MHz oscillation frequency, for Mask ROM version) (Operation voltage of A-D conversion: 2.7 V to 5.5 V)
• High-speed mode ...... 4.0 V to 5.5 V (at 4.2 MHz oscillation frequency, for Mask ROM version and One Time PROM version) ...... 2.5 V to 5.5 V (at 2.0 MHz oscillation frequency, for Mask ROM version and One Time PROM version) ...... 2.0 V to 5.5 V (at 1.5 MHz oscillation frequency, for Mask ROM version) (Operation voltage of A-D conversion: 2.7 V to 5.5 V)
·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
·Voltage comparator ........................................................ 2 circuits
·Watchdog timer ................................................................. 16 bits
·Voltage drop detection circuit
·Clock generating circuit (ceramic resonator)
·LED drive directly enabled (port D)

The 4514 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 4514 Group 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 4514 Group include variations of the built-in memory type and package as shown in the table below.