DataSheet8.cn


PDF ( 数据手册 , 数据表 ) D7566ACS

零件编号 D7566ACS
描述 UPD7566ACS
制造商 NEC
LOGO NEC LOGO 


1 Page

No Preview Available !

D7566ACS 数据手册, 描述, 功能
www.datasheet4u.com
DATA SHEET
MOS INTEGRATED CIRCUIT
µPD7566A, 7566A(A)
4-BIT SINGLE-CHIP MICROCOMPUTER
DESCRIPTION
The µPD7566A is a product of the µPD7554, 7564 sub-series which is a low-end, low-cost version of the
µPD7500 series microcomputers. This 4-bit single-chip microcomputer has fewer ports than the other products
in the µPD7500 series, in order to reduce the package size, and is especially ideal for temperature control
applications, as well as for application systems, such as air conditioners, microwave ovens, refrigerators, rice
cooker, washing machines, and cassette deck controllers. Some of the output pins for the microcomputer can
be used to directly drive triacs and LEDs.
In addition, various I/O circuits can be selected by mask options, so that the number of necessary external
circuits can be significantly reduced.
A detailed function description is provided in the following user's manual.
Be sure to read this manual when designing your system.
µPD7556, 7566 User's Manual: IEM-1111D
FEATURES
PIN CONFIGURATION (Top View)
• 45 instructions (subset of the µPD7500H SET B)
• Instruction cycle: 2.86 microseconds (700 kHz, at 5V) with
ceramic oscillator
P00/INT0
1
24 VSS
• Program memory (ROM): 1,024 words x 8 bits
• Data memory (RAM): 64 words x 4 bits
• Test sources: 1 external and 1 internal
P01/Vref
P10/Cin0
2
3
23 P91
22 P90
• 8-bit timer/event counter
P11/Cin1
4
21 P113
• 19 I/O lines (total output current: 100 mA)
. Five pins can be used to directly drive triacs and LEDS
: P80 to P82, P90 to P91
. Eight pins can be used to directly drive LEDs
P12/Cin2
P13/Cin3
P80
5
6
7
20 P112
19 P111
18 P110
: P100 to P103, P110 to P113
P81 8
17 P103
. Four comparator input pins: P10/Cin 0 to P13/Cin 3
. Mask option functions available on all ports
• Standby functions (STOP/HALT)
P82 9
CL2 10
16 P102
15 P101
• Data memory contents can be retained on a low voltage
CL1 11
14 P100
• Internal ceramic oscillator for system clock oscillation
• CMOS
VDD 12
13 RESET
• Low-power dissipation
• Single power source (2.7 to 6.0V)
APPLICATIONS
µPD7566A : Air conditioner, microwave oven, refrigerator, audio
equipment controller, etc.
µPD7566A(A) : Automotive and transportation equipments, etc.
5
The quality level and absolute maximum ratings of the µPD7566A and the µPD7566A(A) differ.
Except where specifically noted, explanations here concern the µPD7566A as a representative product.
If you are using the µPD7566A(A), use the information presented here after checking the functional
differences.
The information in this document is subject to change without notice.
Document No. IC-2478D
(O. D. No. IC-7885D)
Date Published December 1994 P
Printed in Japan
The 5 mark shows major revised points.
©
198994







D7566ACS pdf, 数据表
µPD7566A, 7566A(A)
www.datasheet4u.com
1.4 NOTES ON USING THE P00/INT0, AND RESET PINS
In addition to the functions described in 1.1, 1.2, and 1.3, an exclusive function for setting the test mode, in which
the internal functions of the µPD7566A are tested, is provided to the P00/INT0 and RESET pins.
If a voltage less than VSS is applied to either of these pins, the µPD7566A is put into test mode. Therefore, even
when the µPD7566A is in normal operation, if noise less than the VSS is input into any of these pins, the µPD7566A
will enter the test mode, and this will cause problems for normal operation.
As an example, if the wiring to the P00/INT0 pin or the RESET pin is long, stray noise may be picked up and the
above mentioned problem may occur.
Therefore, all wiring to these pins must be made short enough to not pick up stray noise. If noise cannot be
avoided, suppress the noise using a capacitor or diode as shown in the figure below.
• Connect a diode having a low VF across
P00/INT0 and RESET, and VSS.
• Connect a capacitor across P00/INT0 and RESET,
and VSS.
VDD
VDD
Low VF
diode
VDD
P00/INT0, RESET
VSS
VDD
P00/INT0, RESET
VSS
8







D7566ACS equivalent, schematic
µPD7566A, 7566A(A)
www.datasheet4u.com
2.3 PROGRAM MEMORY (ROM) ...... 1,024 WORDS X 8 BITS
This is a mask programmable ROM, consisting of 1,024 words by 8 bits. The ROM is addressed by the program
counter (PC). The program is stored in the program memory.
Address 000H in this memory is a reset start address.
Fig. 2-4 Program Memory Map
(0) 000H
Reset start
(1023) 3FFH
2.4 GENERAL-PURPOSE REGISTERS
Two general-purpose registers, H (2 bits) and L (4 bits), are available. Each of these registers can be manipulated
independently from the other. In addition, these registers can be used as a pair register (HL). The pair register serves
as a data pointer to address the data memory.
Fig. 2-5 General-Purpose Registers
1 03
0
HL
The L register is also used to specify an I/O port or mode register, when an input/output instruction (IPL or OPL)
is executed. This register is also used to specify the port bit to be set or reset by SPBL or RPBL instruction.
16










页数 30 页
下载[ D7566ACS.PDF 数据手册 ]


分享链接

Link :

推荐数据表

零件编号描述制造商
D7566ACSUPD7566ACSNEC
NEC

零件编号描述制造商
STK15C88256-Kbit (32 K x 8) PowerStore nvSRAMCypress Semiconductor
Cypress Semiconductor
NJM4556DUAL HIGH CURRENT OPERATIONAL AMPLIFIERNew Japan Radio
New Japan Radio
EL1118-G5 PIN LONG CREEPAGE SOP PHOTOTRANSISTOR PHOTOCOUPLEREverlight
Everlight


DataSheet8.cn    |   2020   |  联系我们   |   搜索  |  Simemap