d1340-33 Maxim Integrated Products, Inc., d1340-33 Datasheet

no-image

d1340-33

Manufacturer Part Number
d1340-33
Description
Ds1340, Ds1340c I?c Rtc With Trickle Charger
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
The DS1340 is a real-time clock (RTC)/calendar that is
pin compatible and functionally equivalent to the ST
M41T00, including the software clock calibration. The
device additionally provides trickle-charge capability
on the V
an oscillator STOP flag. Block access of the register
map is identical to the ST device. Two additional regis-
ters, which are accessed individually, are required for
the trickle charger and flag. The clock/calendar pro-
vides seconds, minutes, hours, day, date, month, and
year information. A built-in power-sense circuit detects
power failures and automatically switches to the back-
up supply. Reads and writes are inhibited while the
clock continues to run. The device is programmed seri-
ally through an I
Rev 4; 3/06
*Purchase of I
Inc., or one of its sublicensed Associated Companies, conveys
a license under the Philips I
ponents in an I
the I
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
2
V
CPU
C Standard Specification as defined by Philips.
CC
Portable Instruments
Point-of-Sale Equipment
Medical Equipment
Telecommunications
BACKUP
R
PU
R
PU
2
2
C components from Maxim Integrated Products,
C system, provided that the system conforms to
= t
R
Typical Operating Circuit
R
2
PU
/ C
C
pin, a lower timekeeping voltage, and
V
CC
B
*
bidirectional bus.
6
5
General Description
1
SCL
SDA
X1
2
CRYSTAL
C Patent Rights to use these com-
DS1340
X2
2
GND
4
Applications
V
V
V
FT/OUT
BACKUP
CC
CC
8
______________________________________________ Maxim Integrated Products
7
3
I
2
C RTC with Trickle Charger
C1
♦ Enhanced Second Source for the ST M41T00
♦ Available in a Surface-Mount Package with an
♦ Fast (400kHz) I
♦ Software Clock Calibration
♦ RTC Counts Seconds, Minutes, Hours, Day, Date,
♦ Automatic Power-Fail Detect and Switch Circuitry
♦ Trickle-Charge Capability
♦ Low Timekeeping Voltage Down to 1.3V
♦ Three Operating Voltage Ranges (1.8V, 3V, and 3.3V)
♦ Oscillator Stop Flag
♦ Available in 8-Pin µSOP or SO Packages
♦ Underwriters Laboratory (UL) Recognized
+ Denotes a lead-free/RoHS-compliant device.
# Denotes a RoHS-compliant device that may include lead that
is exempt under RoHS requirements. The lead finish is JESD97
category e3, and is compatible with both lead-based and lead-
free soldering processes.
† A "+" anywhere on the top mark denotes a lead-free device.
Pin Configurations appear at end of data sheet.
DS1340Z-18
DS1340Z-3
DS1340Z-33
DS1340U-18
DS1340U-3
DS1340U-33
DS1340C-18
DS1340C-3
DS1340C-33
DS1340Z-18+
DS1340Z-3+
DS1340Z-33+
DS1340U-18+ -40°C to +85°C 8 µSOP
DS1340U-3+
DS1340U-33+ -40°C to +85°C 8 µSOP
DS1340C-18#
DS1340C-3#
DS1340C-33#
A "#" denotes a RoHS-compliant device.
Integrated Crystal (DS1340C)
Month, and Year
PART
-40°C to +85°C 8 SO (0.150in)
-40°C to +85°C 8 SO (0.150in)
-40°C to +85°C 8 SO (0.150in)
-40°C to +85°C 8 µSOP
-40°C to +85°C 8 µSOP
-40°C to +85°C 8 µSOP
-40°C to +85°C 16 SO
-40°C to +85°C 16 SO
-40°C to +85°C 16 SO
-40°C to +85°C 8 SO (0.150in)
-40°C to +85°C 8 SO (0.150in)
-40°C to +85°C 8 SO (0.150in)
-40°C to +85°C 8 µSOP
-40°C to +85°C 16 SO
-40°C to +85°C 16 SO
-40°C to +85°C 16 SO
TEMP RANGE PIN-PACKAGE
2
C Interface
Ordering Information
Features
TOP
MARK †
D1340-18
DS1340-3
D1340-33
1340A1-18
1340A1-3
1340A1-33
1340C-18
1340C-3
1340C-33
D1340-18
DS1340-3
D1340-33
1340A1-18
1340A1-3
1340A1-33
1340C-18
1340C-3
1340C-33
1

Related parts for d1340-33

d1340-33 Summary of contents

Page 1

... SO 1340C-33 -40°C to +85° (0.150in) D1340-18 -40°C to +85° (0.150in) DS1340-3 -40°C to +85° (0.150in) D1340-33 1340A1-18 -40°C to +85°C 8 µSOP 1340A1-3 1340A1-33 -40°C to +85° 1340C-18 -40°C to +85° 1340C-3 -40° ...

Page 2

I C RTC with Trickle Charger ABSOLUTE MAXIMUM RATINGS Voltage Range on V Pin Relative to Ground .....-0.3V to +6.0V CC Voltage Range on SDA, SCL, and FT/OUT Relative to Ground..................................-0. Operating Temperature Range ...........................-40°C to +85°C ...

Page 3

RECOMMENDED DC OPERATING CONDITIONS ( -40°C to +85°C, unless otherwise noted. Typical values are MIN CC MAX A otherwise noted.) (Note 1) PARAMETER SYMBOL Supply Voltage (Note 8) Input ...

Page 4

I C RTC with Trickle Charger POWER-UP/POWER-DOWN CHARACTERISTICS (T = -40°C to +85°C) (Figure 2) A PARAMETER SYMBOL Recovery at Power- Fall Time PF(MAX) t VCCF V PF(MIN) V Rise Time ...

Page 5

PF(MAX) V PF(MIN) RST RECOGNIZED INPUTS OUTPUTS VALID Figure 2. Power-Up/Power-Down Timing (V = +3.3V +25°C, unless otherwise noted vs CCSA CC 250 200 150 100 50 0 ...

Page 6

I C RTC with Trickle Charger PIN NAME 8 16 Connections for a Standard 32.768kHz Quartz Crystal. The internal oscillator circuitry is designed for 1 — X1 operation with a crystal having a specified load capacitance (C and can ...

Page 7

Oscillator Circuit The DS1340 uses an external 32.768kHz crystal. The oscillator circuit does not require any external resistors or capacitors to operate. Table 2 specifies several crys- tal parameters for the external crystal. Figure 3 shows a functional schematic of ...

Page 8

I C RTC with Trickle Charger Address Map Table 3 shows the DS1340 address map. The RTC reg- isters are located in address locations 00h to 06h, and the control register is located at 07h. The trickle-charge and flag ...

Page 9

Control Register (07h) Bit 7: Output Control (OUT). This bit controls the out- put level of the FT/OUT pin when the FT bit is set the logic level on the FT/OUT pin is 1 ...

Page 10

I C RTC with Trickle Charger Table 4. Trickle-Charge Register TCS3 TCS2 TCS1 ...

Page 11

Serial Data Bus The DS1340 supports a bidirectional I transmission protocol. A device that sends data onto the bus is defined as a transmitter and a device receiv- ing data as a receiver. The device that controls ...

Page 12

I C RTC with Trickle Charger Figures 8 and 9 detail how data transfer is accom- 2 plished on the I C bus. Depending upon the state of the R/W bit, two types of data transfer are possible: Data ...

Page 13

Handling, PC Board Layout, and Assembly The DS1340C package contains a quartz tuning-fork crystal. Pick-and-place equipment may be used, but precautions should be taken to ensure that excessive shocks are avoided. Exposure to reflow is limited to 2 times maximum. ...

Page 14

... Maxim Integrated Products is a registered trademark of Dallas Semiconductor Corporation. Package Information For the latest package outline information www.maxim-ic.com/DallasPackInfo. PACKAGE DOCUMENT NUMBER 8-pin SO (150 mils) 56-G2008-001 8-pin µSOP 56-G2018-001 16-pin SO (300 mils) 56-G4009-001 is a registered trademark of Maxim Integrated Products, Inc. ...

Related keywords