![](http://datasheet.mmic.net.cn/370000/UPD784915B_datasheet_16743937/UPD784915B_1.png)
1998
DATA SHEET
MOS INTEGRATED CIRCUIT
μ
PD784915B, 784916B
DESCRIPTION
The
μ
PD784915B, 784916B are members of the NEC 78K/IV Series of microcontrollers equipped with a high-
speed 16-bit CPU and are versions with improved electrical characteristics of the
μ
PD784915A, 784916A of the
μ
PD784915 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
μ
PD784916B, the
μ
PD78P4916, is also available.
Detailed function descriptions are provided in the following user’s manuals. Be sure to read them before
designing.
μ
PD784915 Subseries User’s Manual - Hardware: U10444E
78K/IV Series User’s Manual - Instruction: U10905E
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
Part Number
ROM
RAM
μ
PD784915B
49152 bytes
1280 bytes
μ
PD784916B
63488 bytes
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
μ
s)
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: V
DD
= 2.7 to 5.5 V
Hardware watch function: watch operation at low voltage (V
DD
= 2.7 V (MIN.)) and low current
APPLICATIONS
Control system/servo/timer of VCR
16-BIT SINGLE-CHIP MICROCONTROLLERS
Document No. U13118EJ1V0DS00 (1st edition)
Date Published January 1998 N CP(K)
Printed in Japan
The information in this document is subject to change without notice
Unless mentioned otherwise, the
μ
PD784916B is described as the representative product.