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UPD784915A

Description
16-BIT SINGLE-CHIP MICROCONTROLLERS
File Size365KB,86 Pages
ManufacturerNEC ( Renesas )
Websitehttps://www2.renesas.cn/zh-cn/
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UPD784915A Overview

16-BIT SINGLE-CHIP MICROCONTROLLERS

DATA SHEET
µ
PD784915A, 784916A
16-BIT SINGLE-CHIP MICROCONTROLLERS
MOS INTEGRATED CIRCUIT
DESCRIPTION
The
µ
PD784915A, 784916A are members of the NEC 78K/IV Series of microcontrollers equipped with a high-
speed 16-bit CPU and are the successors of the 78K/I Series 8-bit single-chip microcontrollers for VCR software
servo control.
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
PD784916A, the
µ
PD78P4916, is also available.
The functions of the
µ
PD784916A are described in detail 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
48 Kbytes
62 Kbytes
RAM
1280 bytes
µ
PD784915A
µ
PD784916A
• 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
Unless mentioned otherwise, the
µ
PD784916A is described as the representative product.
The information in this document is subject to change without notice
Document No. U11022EJ1V0DS00 (1st edition)
Date Published July 1997 N
Printed in Japan
The mark
shows major revised points.
©
1996

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