DESCRIPTION
The µPD784935A, 784936A, 784937A, and 784938A are members of the µPD784938A Subseries in the 78K/IV Series. These microcontrollers are based on the µPD784908 Subseries but are provided with the higher internal ROM and RAM capacities and a ROM correction function.
In addition, a flash memory version, µPD78F4938A, that can operate in the same power supply voltage range as the mask ROM version, and various development tools are also available.

FEATURES
• 78K/IV Series
• Minimum instruction execution time:
   320 ns (fxx = 6.29 MHz)
   160 ns (fxx = 12.5 MHz)
• I/O ports: 80 pins
• Timers/counters: 16-bit timer/event counter × 1 unit
                               8-/16-bit timer/event counter × 2 units
                               8-/16-bit timer × 1 unit
• Serial interface: 4 channels
   • UART/IOE (3-wire serial I/O): 2 channels
   • CSI (3-wire serial I/O): 2 channels
• PWM output: 2 outputs
• Standby function
   HALT/STOP/IDLE mode
• Clock division function
• External expansion function
• Internal ROM correction function
• Watchdog timer: 1 channel
• Clock output function:
   Selectable from fCLK, fCLK/2, fCLK/4, fCLK/8, and fCLK/16
• A/D converter: 8-bit resolution × 8 channels
• IEBusTM controller
• Watch timer
• Low power consumption
• Supply voltage:
   • VDD = 4.0 to 5.5 V (@12.58 MHz operation)
   • VDD = 3.0 to 5.5 V (@6.29 MHz operation)

APPLICATION
   Car audio, etc.