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BU9873F-GTE2

Description
Real Time Clock
Categorysemiconductor    Analog mixed-signal IC   
File Size2MB,41 Pages
ManufacturerROHM Semiconductor
Websitehttps://www.rohm.com/
Environmental Compliance
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BU9873F-GTE2 Overview

Real Time Clock

BU9873F-GTE2 Parametric

Parameter NameAttribute value
Product AttributeAttribute Value
ManufacturerROHM Semiconductor
Product CategoryReal Time Clock
RoHSDetails
Package / CaseSOP-8
PackagingCut Tape
PackagingReel
Factory Pack Quantity2500
Datasheet
Real-Time Clock (RTC) series
I
2
C BUS Serial Interface RTC
with High-precision Oscillation Adjustment
BU9873
Outline
The BU9873 is a CMOS real-time clock, which has a
built-in interrupt generation function. This product is
connected to the CPU via I
2
C interface, and configured to
perform serial transmission of time and calendar data to
the CPU. A high-precision oscillation adjustment circuit is
also integrated, which is capable of adjusting time counts
with digital method, and correcting deviations in the
oscillation frequency of the crystal oscillator.
Important Characteristics
Time Keeping Voltage
Time Keeping Current 1
(V
DD
=3V, Ta=+25°C)
Time Keeping Current 2
(V
DD
=3V, Ta=-40°C to +85°C)
Power Supply Voltage
Access Frequency 1
(V
DD
=1.8V to 2.5V)
Access Frequency 2
(V
DD
=2.5V to 5.5V)
1.45V to 5.5V
0.4µA (Typ)
1.0µA (Max)
1.8V to 5.5V
100kHz (Max)
400kHz (Max)
Features
Connected to the CPU via
Interface
Time (Hour
½
Minute
½
Second, Selectable 12-Hour
and 24-Hour Mode Setting)
Calendar (Year½Month½Day½Week)
Periodic Interrupt Function
(Output from INTRB, Ranging from 1 Second to 1
Month)
Alarm Interrupt Function
(Day-of-Week
½
Hour
½
Minute in Setting Format,
Output from INTRB)
Oscillation Halt Sensing Function
32.768 kHz Clock Output
(Output from 32KOUT with Control Register)
±30 Second Adjustment Function
Automatic Leap Year Recognition up to the Year
2099
Built-in Oscillation Stabilizing Capacitors (C
G
, C
D
)
High-Precision Oscillation Adjustment Circuit
I
2
C
Package
W (Typ) x D (Typ) x H (Max)
SOP8
5.00mm x 6.20mm x 1.71mm
MSOP8
2.90mm x 4.00mm x 0.90mm
SOP- J8
4.90mm x 6.00mm x 1.65mm
VSON008X2030
2.00mm x 3.00mm x 0.60mm
TSSOP-B8
3.00mm x 6.40mm x 1.20mm
○Product
structure: Silicon monolithic integrated circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This
product has no designed protection against radioactive rays
1/37
TSZ02201-0919AGZ00010-1-2
26.Jan.2018 Rev.002

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Product Attribute Attribute Value Attribute Value
Manufacturer ROHM Semiconductor ROHM Semiconductor
Product Category Real Time Clock Real Time Clock
RoHS Details Details
Package / Case SOP-8 SOP-8
Factory Pack Quantity 2500 2500
Packaging Reel Reel
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