DESCRIPTION
The µPD784915B, 784916B are members of the NEC 78K/IV Series of microcontrollers equipped with a highspeed 16-bit CPU and are versions with improved electrical characteristics of the µPD784915A, 784916A of the µPD784915 Subseries.
This series contains many peripheral hardware units ideal for VCR control, such as a multi-function timer unit (super timer unit) suitable for software servo control and VCR analog circuits. A one-time PROM version of the µPD784916B, the µPD78P4916, is also available.

FEATURES
• High instruction execution speed realized by 16-bit CPU core
    • Minimum instruction execution time: 250 ns (with 8-MHz internal clock)
• High internal memory capacity
• VCR analog circuits conforming to VHS Standard
    • CTL amplifier
    • RECCTL driver (rewritable)
    • CFG amplifier
    • DFG amplifier
    • DPG comparator
    • DPFG separation circuit (ternary separation circuit)
    • Reel FG comparator (2 channels)
    • CSYNC comparator
• Timer unit (super timer unit) for servo control
• Serial interface: 2 channels (3-wire serial I/O)
• A/D converter: 12 channels (conversion time: 10 µs)
• Low-frequency oscillation mode: main system clock frequency = internal clock frequency
• Low-power dissipation mode: CPU can operate with a subsystem clock.
• Supply voltage range: VDD = 2.7 to 5.5 V
• Hardware watch function: watch operation at low voltage (VDD = 2.7 V (MIN.)) and low current

APPLICATIONS
    Control system/servo/timer of VCR