DESCRIPTION
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.

FEATURES
• 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

APPLICATION
   Remote control transmit.