DataSheet39.com

What is UPD4991AGS?

This electronic component, produced by the manufacturer "NEC", performs the same function as "4-BIT PARALLEL I/O CALENDAR CLOCK".


UPD4991AGS Datasheet PDF - NEC

Part Number UPD4991AGS
Description 4-BIT PARALLEL I/O CALENDAR CLOCK
Manufacturers NEC 
Logo NEC Logo 


There is a preview and UPD4991AGS download ( pdf file ) link at the bottom of this page.





Total 30 Pages



Preview 1 page

No Preview Available ! UPD4991AGS datasheet, circuit

DATA SHEET
MOS INTEGRATED CIRCUIT
µPD4991A
4-BIT PARALLEL I/O CALENDAR CLOCK
The µPD4991A is a CMOS integrated circuit that has the ability to input/output 4-bit parallel time data and calendar
data to/from a microcomputer and includes an alarm function.
Its reference oscillation frequency is 32.768 kHz. Hour, minute, second, year, month, day, and date data is stored
internally.
The µPD4991A consumes 30 % less power than the µPD4991.
FEATURES:
• Time (hour, minute, and second) and calendar (leap year, year, month, day, and date) counters
• Leap year can be automatically identified or set
• 12- and 24-hour modes selectable
• 4-bit parallel input/output in BCD data format
• Alarm function (hour, minute, second, month, day, date)
• One of 0.1, 1.0, 10, 30, and 60-s interval timer outputs selectable
• One of 2048, 1024, 64, 16, 1 Hz, 1-pulse output, and HL output selectable as alarm coincidence output
• Upward compatible with µPD4991
• Low power consumption: 2 µA typ. (VDD = 2.4 V)
ORDERING INFORMATION:
Part Number
µPD4991ACX
µPD4991AGS
18-pin plastic DIP (300 mil)
20-pin plastic SOP (300 mil)
Package
Document No. IC-3309 (1st edition)
(O.D. No. IC-7892A)
Date Published March 1997 P
Printed in Japan
© 19953

line_dark_gray
UPD4991AGS equivalent
µPD4991A
ABSOLUTE MAXIMUM RATINGS (VSS = 0 V)
PARAMETER
SYMBOL
Supply Voltage
VPP
Input Voltage Range
VIN
Output Pin Breakdown Voltage
VOUT
Low-Level Output Current
(N-ch open-drain)
IOUT
Operating Ambient Temperature
Topt
Storage Temperature
Tstg
RATINGS
–0.3 ~ 7.0
–0.3 ~ VPP + 0.3
7.0
30
–40 ~ +85
–65 ~ +125
UNIT
V
V
V
mA
°C
°C
ELECTRICAL CHARACTERISTICS
(VSS = 0 V, f = 32.768 kHz, CG = CD = 20 pF, Ci = 20 k, Ta = –40 to +85 °C)
PARAMETER
Operating Voltage Range
High-level Input Voltage
Low-level Input Voltage
Current Consumption *
Current Consumption *
Current Consumption *
High-Level Input Leakage Current
Low-Level Input Leakage Current
High-Level Output Voltage
Low-Level Output Voltage
Low-Level Output Voltage
High-Level Leakage Current
SYMBOL MIN. TYP. MAX. UNIT
VDD 2.0
5.5 V
VIH 0.7 VDD
VDD V
VIL VSS
0.3 VDD V
IDD 5 14 µA
IDD 10 µA
IDD 2 6 µA
ILIH +1.0 µA
ILIL –1.0 µA
VOH 2.4
V
VOL1
0.4 V
VOL2
0.4 V
ILOH 1.0 µA
CONDITIONS
VDD = 3.6 V, VIN = VSS, Ta = –40 ~ +70 °C
VDD = 3.0 V, VIN = VSS, Ta = –40 ~ +70 °C
VDD = 2.4 V, VIN = VSS, Ta = –40 ~ +70 °C
VDD = 5.5 V, VIN = VDD
VDD = 5.5 V, VIN = VSS
IOH = –1.0 mA
IOL = 2.0 mA
IOL = 1.0 mA (Nch Open Drain)
TPout = VDD (Nch Open Drain)
* If VIN pins are not VSS, Current Consumption increase in value.
AC CHARACTERISTICS
Write cycle (Unless otherwise specified, VDD = 5 V ± 10 %, Ta = –40 to +85 °C)
PARAMETER
Cycle Time
CS-WE Reset Time
Address-WE Reset Time
Address-WE Setup Time
Write Pulse Width
Address Hold Time
Input Data Setup Time
Input Data Hold Time
WE-Output Floating Time
SYMBOL MIN.
tWC 150
tCW 120
tAW 120
tAS 0
tWP 90
tWR 20
tDW 50
tDH 0
tWHZ
TYP.
MAX. UNIT
ns
50
CONDITIONS
5


line_dark_gray

Preview 5 Page


Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for UPD4991AGS electronic component.


Information Total 30 Pages
Link URL [ Copy URL to Clipboard ]
Download [ UPD4991AGS.PDF Datasheet ]

Share Link :

Electronic Components Distributor


An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists.


SparkFun Electronics Allied Electronics DigiKey Electronics Arrow Electronics
Mouser Electronics Adafruit Newark Chip One Stop


Featured Datasheets

Part NumberDescriptionMFRS
UPD4991AGSThe function is 4-BIT PARALLEL I/O CALENDAR CLOCK. NECNEC

Semiconductors commonly used in industry:

1N4148   |   BAW56   |   1N5400   |   NE555   |  

LM324   |   BC327   |   IRF840  |   2N3904   |  



Quick jump to:

UPD4     1N4     2N2     2SA     2SC     74H     BC     HCF     IRF     KA    

LA     LM     MC     NE     ST     STK     TDA     TL     UA    



Privacy Policy   |    Contact Us     |    New    |    Search