MCU 8-bit 740 CISC ROMLess 3V

The 7545 Group is the 8-bit microcomputer based on the 740 family core technology. The 7545 Group has an 8-bit timer, power-on reset circuit and the voltage drop detection circuit. Also, Function set ROM is equipped. Basic machine-language instructions - 71 The minimum instruction execution time - 2.00 µs (at 4 MHz oscillation frequency for the shortest instruction) Memory size ROM - 4K to 60K bytes RAM - 256, 512 bytes Programmable I/O ports - 25 Key-on wakeup input - 8 inputs LED output port - 8 Interrupts - 7 sources, 7 vectors Timers - 8-bit × 3 Carrier wave generating circuit - 1 channel (8-bit timer × 2) Clock generating circuit - Built-in type (connect to external ceramic resonator or quartz-crystal oscillator) Watchdog timer - 16-bit × 1 Power-on reset circuit - Built-in type Voltage drop detection circuit - Built-in type Power source voltage XIN oscillation frequency at ceramic/quartz-crystal oscillation At 4 MHz - 1.8 to 3.6 V Power dissipation - 1.8mW Operating temperature range : -20 to 85 °C