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PDF UPD784916A Data sheet ( Hoja de datos )

Número de pieza UPD784916A
Descripción 16-BIT SINGLE-CHIP MICROCONTROLLERS
Fabricantes NEC 
Logotipo NEC Logotipo



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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD784915A, 784916A
16-BIT SINGLE-CHIP MICROCONTROLLERS
DESCRIPTION
The µPD784915A, 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 µPD784916A, the µPD78P4916, is also available.
The functions of the µPD784916A are described in detail in the following user’s manuals. Be sure to read
them before designing.
µPD784915 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
µPD784915A
µPD784916A
ROM
48 Kbytes
62 Kbytes
RAM
1280 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 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
Unless mentioned otherwise, the µPD784916A 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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UPD784916A pdf
PIN CONFIGURATION (Top View)
100-pin plastic QFP (14 x 20 mm)
µPD784915AGF-xxx-3BA
µPD784916AGF-xxx-3BA
µPD784915A, 784916A
P64
P65/HWIN
P66/PWM4
P67/PWM5
P60/STRB/CLO
P61/SCK1/BUZ
P62/SO1
P63/SI1
PWM0
PWM1
SCK2
SO2
SI2/BUSY
VDD
XT1
XT2
VSS
X2
X1
RESET
IC
PTO02
PTO01
PTO00
P87/PTO11
P86/PTO10
P85/PWM3
P84/PWM2
P83/ROTC
P82/HASW
10099 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
1 80
2 79
3 78
4 77
5 76
6 75
7 74
8 73
9 72
10 71
11 70
12 69
13 68
14 67
15 66
16 65
17 64
18 63
19 62
20 61
21 60
22 59
23 58
24 57
25 56
26 55
27 54
28 53
29 52
30 51
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
ANI9
ANI8
P77/ANI7
P76/ANI6
P75/ANI5
P74/ANI4
P73/ANI3
P72/ANI2
P71/ANI1
P70/ANI0
AVREF
AVDD2
P96
P95/KEY4
P94/KEY3
P93/KEY2
P92/KEY1
P91/KEY0
P90/ENV
NMI
INTP0
INTP1
INTP2
P00
P01
P02
P03
P04
P05
P06
Caution Directly connect the IC (Internally Connected) pins to VSS.
5

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UPD784916A arduino
µPD784915A, 784916A
1. DIFFERENCES AMONG µPD784915 SUBSERIES PRODUCTS
The µPD784915 subseries comprises the four products shown in Table 1-1. The µPD784915A, which is a process-
shrinked version of the µPD784915 is a low-cost product. The µPD784916A is a version of the µPD784915 with
internal ROM extended to 62K bytes. The µPD78P4916 is a product with the mask ROM of the µPD784915, 784915A,
and 784916A replaced by a writable one-time PROM. Therefore, it has the same functions as those of the µPD784915,
784915A and 784916A, with only exception that it has PROM for internal ROM and a different capacity.
Before using the PROM to perform debugging or preproduction of an application system and then using the mask
ROM to proceed with volume production, etc., thoroughly check the differences between these products.
For more information about the CPU functions and on-chip hardware, see µPD784915 Subseries User’s Manual
- Hardware (U10444E).
Table 1-1. Differences among µPD784915 Subseries Products
Internal ROM
Item
Internal RAM
Internal memory capacity select register (IMS)
Pin connections
Other
µPD784915, 784915A µPD784916A
µPD78P4916
Mask ROM
Mask ROM
One-time PROM
48K bytes
62K bytes
62K bytesNote
1280 bytes
1280 bytes
2048 bytesNote
Not available
Not available
Available
The µPD78P4916 has additional PROM write/read related
pin functions.
Since these products are different in circuit scale and mask
layout, they partly differ in noise resistance, noise radiation
and electrical specifications.
Note The internal PROM and internal RAM capacities can be changed by the internal memory capacity select
register (IMS).
Caution
The PROM version and mask ROM version differ in noise immunity and noise radiation, etc.
When considering replacing a PROM product with a mask ROM product when switching from
preproduction to volume production, perform sufficient evaluation using a CS version (not ES
version) of the mask ROM product.
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