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IZ1325 Schematic ( PDF Datasheet ) - Integral

Teilenummer IZ1325
Beschreibung High-precision Real Time Clock circuit
Hersteller Integral
Logo Integral Logo 




Gesamt 12 Seiten
IZ1325 Datasheet, Funktion
IZ1325
High-precision Real Time Clock circuit
with thermal compensation and built-in quartz resonator
(Functional analogue of RX8025SA by Company « Epson Toyocom »)
The IZ1325 high-precision real-time clock circuit with thermal compensation and built-in quartz
resonator, provides high accuracy counting the current time of the, generation of 6 system inter-
ruptions and two independent event signals. The device provides both 24/12-hour operation
modes and contains the built-in supply control circuit, frequency adjustment circuit for high ac-
curacy of the system generator. The IZ1325 support data and command exchange by means of
standard 2-wire interface (I2C-bus).
The IC is applied in the wide range of the industrial and household equipment and appli-
ances, where it is required to counting and processing of the system current time data.
Main functions:
seconds, minites hours, weekday, date, month and year time counting;
two operational modes12/24-hours;
data and command exchange via 2-wire I2C-bus serial interface;
6 system interrupts generation;
2 independent alarms: day, hours, minutes and hours, minutes;
supply voltage and system generator frequency monitoring.
Main features:
Supply voltage, UDD, 1,7 … 5,5 V
Oscilator operating supply voltage UCLK, 1,15 … 5,5 V
Operating temperature range -40 to +85 °С
Table 1 – Contact pad description
Contact
pad num-
ber
01
02
03
04
05
06
07
08
09
10
11
Symbol
GND
INTA
X1
X2
FOE
VDD
TEST
FOUT
SCL
SDA
INTB
Description
Ground
Interrupt output A
Quartz resonator input
Quartz resonator output
Control input
Power supply
Test terminal
32.768 kHz clock output
I2C bus clock input
I2C bus input-output
Interrupt output B
Ver.1.0/02.11.2010
1 IZ1325-TSe
549888
www.bms.by






IZ1325 Datasheet, Funktion
Operation
IZ1325
IZ1325 operates on the serial bus as the «slave» device. START condition has to be set-
up , register address and device identification code has to transferred the to get access to the
device. The next registers can be addressed in series till the condition STOP is set-up. When
supply voltage drops below 1,8 V, access to the device by the serial interface is not guaranteed.
The current time is counted with the supply voltage 1 ÷ 5,5 V.
Time and date reading is performed by means of reading of the appropriate register
bytes. Set-up and initialization of the time and calendars performed by means of data writing to
the appropriate bytes. Data, contained in the time, calendar and alarm registers is coded in
BCD format.
After START condition issued to 2-wire bus the data on current time transferred from
counters to the set of auxiliary registers. The data on time are read out from these auxiliary reg-
isters, while the watch continue to operate. This eliminates the need in the repeated reading in
case of updating the basic registers during the access process.
Table 6 – Structure of RTC registers
Address
D7 D6 D5
Data
D4 D3
D2 D1
D0
RTC registers
0
-
S40 S20 S10
S8 S4 S2
S1
Seconds
1 - M40 M20 M10 M8 M4 M2 M1 Minutes
2
-
-
H20
P,/ A
H10
H8 H4 H2
H1
Hours
3
---
-
- W4 W2 W1
Weeks
4
-
-
D20 D10
D8 D4 D2
D1
Weekdays
5 - - - МO10 MO8 MO4 MO2 MO1 Monthes
6
Y80 Y40 Y20 Y10
Y8 Y4 Y2
Y1
Years
7
-
F6 F5
F4
F3 F2 F1
F0 Digital adjustment
8 - WM40 WM20 WM10 WM8 WM4 WM2 WM1 Alarm 1: minutes
9
-
-
WH20
WP,/A
WH10
WH8 WH4 WH2 WH1
Alarm 1: hours
A - WW6 WW5 WW4 WW3 WW2 WW1 WW0 Alarm 1: weekdays
B - DM40 DM20 DM10 DM8 DM4 DM2 DM1 Alarm 1: minutes
C
-
-
DH20 DH10
DP,/A
DH8 DH4 DH2 DH1
Alarm 1: hours
D Not used
Not used
E WALE DALE /12, 24 /CLEAN2 TEST CT2 CT1 CT0
Control 1
F VDSL VDET /XST PON /CLEAN1CTFG WAFG DAFG Control 2
Ver.1.0/02.11.2010
6 IZ1325-TSe
549888
www.bms.by

6 Page









IZ1325 pdf, datenblatt
Table 7 – Contact pad size and coordinates
Contact pad
number
Coordinates (left bottom corner), mm
XY
01 0,099
0,945
02 0,115
0,670
03 0,168
0,115
04 0,562
0,115
05 0,777
0,115
06 0,992
0,115
07 1,045
0,389
08 0,992
0,942
09 0,777
0,945
10 0,562
0,945
11 0,347
0,945
Note - Contact pad coordinates and dimensions 0,09 x 0,09 mmare indicated un-
der “Passivation” layer
IZ1325
Ver.1.0/02.11.2010
12 IZ1325-TSe
549888
www.bms.by

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