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