TECHNICAL DATA
CMOS timer with RAM and I
2
C-bus control
.
INA8583N is a timer with RAM and I
2
C-bus control. Designed for
use in appliances having I
2
C-bus as clock/ calendar/ timer/
alarm/ events counter for turning on functions of the appliance at
preset time or upon completion of an event. To be used in audio
and appliances.
INA8583
Features:
•
•
•
•
•
•
•
•
•
•
I
2
C- bus interface operating supply voltage: 2.5 V to 6 V
Clock operating supply voltage ( 0÷70°С): 1.0 V to 6 V
Operating current (at f
SCL
= 0Hz):
50 μА
Clock function with four year calendar
24 or 12 hour format
32.768 kHz or 50Hz time base
Serial bus (I
2
C)
Automatic word address in crementation
Programmable alarm, timer and interrupt function
Operating temperature range: -20 to +70
О
С
ORDERI NG I NFORM ATI ON
IL8583N Plastic
IL8583D SOIC
T
A
= -20° … + 70° C
for all packages.
ORDERING INFORMATION
Device
IL8583N
IL8583D
IL8583DT
T
A
=-20° … +70°C
Operating
Temperature Range
Package
DIP-8
SOP-8
SOP-8
Packing
Tube
Tube
T&R
Table1
– PIN ASSIGNMENT
Name
OSCI
OSCO
A0
GND
SDA
SCL
INT
Vcc
Pin
1
2
3
4
5
6
7
8
Description
Generator input, 50Hz or occurrences
Generator output
Address input
GND
2
Data for I C-bus
2
Clock pulses for I C-bus
Open-drain interrupt output
Supply voltage
Pinning Diagram
OSCI
OSCO
A0
GND
1
2
3
4
Fig.1
8
7
6
5
Vcc
INT
SCL
SDA
2012, January, ver.01
INA8583
Block Diagram INA8583
INA8583
OSCI
OSCO
INT
V
CC
GND
Power-on
reset
Control
logic
INA8583
OSCILLATOR
32.768kHz
Divider
1:256 or
100:128
100Hz
A0
SCL
SDA
I
2
C-bus
interface
Address
register
Control/status
Hundredth of a second
seconds
minutes
hours
Year/date
Weekday/months
timer
Alarm control
Alarm regisers
or RAM
RAM
(240х8)
00
01
07
08
0F
FF
Fig. 2.
2012, January, ver.01
INA8583
Table 2 –
Recommend-Operating Conditions
Parameter,
Symbol,
Unit
Supply voltage, Vcc, V
operating
clock
Low input voltage, Vil, V
High input voltage, Vih, V
Operating ambient tempera-
ture, Tamb,
°C
Input frequency,
f
I
, MHz
Limits
Not more
Not less
Note
2.5
1.0
0
0.7*Vcc
-20
6.0
6.0
0.3*Vcc
Vcc
+70
1
T
amb
=0…+70°C
Only for event
mode
Table3 –
Absolute Maximum Rating
Parameter,
Symbol,
Unit
Supply voltage, Vcc, V
Input voltage for all inputs, V
I
, V
Max output current, Io, mA
Max input current, I
I
, mA
Current through inputs 04 or 08, I
DD
, I
SS
,
mА
Power dissipation on package,
Р
TOT
, mW
Power dissipation on output , Р
О
, mW
Storage temperature, Tstg,
°С
Limits
Not more
Not less
-0.8
-0.8
7,0
Vcc+0.8
10
10
50
300
50
+150
Note
Note1
-65
Notes:
1. If voltage on diode is higher than V
CC
or lower than GND, the current will flow, the current should be not
more than
±0.5mA.
* Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the de-
vice. These are stress ratings only and functional operation of the device at these or any other conditions
beyond those indicated under “recommended operating conditions” is not implied.
Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
2012, January, ver.01
INA8583
Table 4 –
Electrical Parameters.
Parameter, Symbol,
Unit
Supply
Supply current ,Iсс, μA
Supply current for clock,
I
СС0
,
μA
Data storage supply current,
I
CCR
,
μA
I C
-bus
2
Limit
Not less Not more
200
Testing con-
ditions
Vcc=6V
F
SCL
= 100kHz
Vcc=5V
Vcc=1V
Note 1
V
CC
= 1V
V
CC
= 1V
Note 2
Tempera-
ture,
°C
T=-20
+25
+70
50
10
5
2
2.3
enable level, V
POR
, V
1.5
Input/output SDA
Low output current, I
OL
, mA
Input leakage current,
|I
I
|,
μA
SCL, SDA
Input capacity, С
I
,pF
Inputs A0, OSCI
Input leakage current,
|I
I
|,
nA
Output INT
Output low current, I
OL
, mA
Input leakage current,
|I
I
|,
μA
3
1
Vcc= 6 V
Vol= 0.4 V
Vcc= 6 V
V
IL
= 0 V
V
IH
= 6 V
V
I
=0 V
Vcc= 6 V
V
IL
= 0 V
V
IH
= 6 V
Vcc=6.0 V
V
OL
=0,4 V
Vcc= 6 V
V
IL
= 0 V
V
IH
= 6 V
7
250
3
1
Notes:
1. For event mode or 50Hz only.
2
2. The I C-bus logic is disabled if V
CC
<
V
POR
.
2012, January, ver.01
INA8583
Description
INA8583N contains 256х8 RAM 8-bit.
The word address register which is incre-
mented automatically, built-in 32.768 kHz oscillator circuit, frequency divider, interface of
two line bi-directional serial I
2
C-bus and power-on reset circuit.
The first 8 bits of the RAM (addresses 00÷07) are designated ass addressable 8-bit
parallel registers. The first register (address 00) is used as a control/status register. The
memory addresses 01 to 07 are used as counters for the clock function. The memory ad-
dress 08÷0F may be used as free RAM locations or may be programmed as alarm regis-
ters.
The following modes can be selected by setting the control/status register:
Clock mode from 32.768 kHz;
Clock mode from 50 Hz;
Event counter mode.
In the clock mode hundredths of a second, seconds, minutes, hours, date, month
(four-year calendar) and a weekday are stored in a BCD format. The timer register stores
up to 99 days. The event counter mode is used for counting pulses applied to the oscilla-
tor input (OSCO left open-circuit). In BCD format the event counter stores up to 6 digits.
By setting the alarm enabling bit of the control/status register the alarm control regis-
ter (address 08) is activated.
By setting the alarm control register the following may be programmed:
Dated alarm;
Weekday alarm;
Daily alarm;
Timer alarm.
In the clock mode the timer register (address 07) may be programmed to count hun-
dredths of a second, seconds, minutes, hours or days. Days are counted when an alarm is
not programmed.
Whenever an alarm event occurs the alarm flag of the control/status register is set,
and an overflow condition of the timer will set the timer flag. The open drain interrupt out-
put is switched on (active LOW) when the alarm or timer flag is set. The flags remain set
until directly reset by a write operation to register (00 address).
When the alarm is disabled the remaining alarm registers (addresses 09÷0F) may be
used as free RAM.
In the clock modes 24hr or 12hr format can be selected by setting the most signifi-
cant bit of the hours counter register.
2012, January, ver.01
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