DESCRIPTION
The µPD784218 is a member of the µPD784218 Subseries of the 78K/IV Series. In addition to a high-speed and high-performance CPU, the µPD784218 incorporates a variety of peripheral hardware such as ROM, RAM, I/O ports, 8-bit resolution A/D and D/A converters, timers, serial interfaces, real-time output ports, and an interrupt function.
The µPD784218YNote is the µPD784218 Subseries with a multi-master supporting I2C bus interface added.
Flash memory versions, the µPD78F4218 and 78F4218Y, which can operate in the same voltage range as the mask ROM versions, and various development tools are also available.

FEATURES
• On-chip ROM correction function
• Inherits peripheral functions of µPD78078Y Subseries
• Minimum instruction execution time 160 ns (@ fXX = 12.5 MHz operation with main system clock) 61 µs (@ fXT = 32.768 kHz operation with subsystem clock)
• Internal high-capacity memory · ROM: 256 KB · RAM: 12,800 bytes
• I/O ports: 86
• Timer/counters: 16-bit timer/event counter × 1 unit 8-bit timer/event counter × 6 units
• Serial interfaces: 3 channels UART/IOE (3-wire serial I/O): 2 channels CSI (3-wire serial I/O, multi-master supporting I2C busNote): 1 channel
• Standby function HALT/STOP/IDLE mode In power-saving mode: HALT/IDLE mode (with subsystem clock)
• Clock division function
• Watch timer: 1 channel
• Watchdog timer: 1 channel
• Clock output function Selectable from fXX, fXX/2, fXX/22, fXX/23, fXX/24, fXX/25, fXX/26, fXX/27, fXT
• Buzzer output function Selectable from fXX/210, fXX/211, fXX/212, fXX/213
• A/D converter: 8-bit resolution × 8 channels
• D/A converter: 8-bit resolution × 2 channels
• Supply voltage: VDD = 2.2 to 5.5 V