New Product
4-wire serial interface high-stability RTC module
RX –4045
SA
Preliminary
Product number:Q4140455xxxxx00
•
Built in frequency adjusted 32.768 kHz crystal unit.
•
Serial interface which can be controlled by 4 or 3 signal lines.
•
Dual Alarm and Timer IRQ function are Available.
•
32.768 kHz clock frequency output. (FOUT)
•
Low backup current : 0.48 µA / 3 V ( Typ.)
•
Wide operating voltage range : 1.7 V to 5.5 V Wide timekeeper voltage range : 1.15 V to 5.5 V
•
Available as small package.( SOP-14pin )
s
Block Diagram
FOUT
32 kHz
Output
Control
Comparator_W
Alarm_W Register
( Min,Hour,Week )
Voltage
Detect
V
DD
Comparator_D
Alarm_D Register
( Min,Hour )
OSC
Divider
Correc
-tion
Div.
Time Counter
( Sec,Min,Hour,Week,Day,Month,Year )
OSC
Detect
Address
Decoder
Address
Register
I/O
Control
CLK
DI
DO
CE
/ INT
Interrupt Control
Shift Register
GND
s
Pin Assignment
s
Pin Descriptions
Terminal
Pin No.
2
3
5
6
7
10
11
12
13
CLK
RX - 4045 SA
Pin Assignment
10.1
#14
#8
FOUT
5.0 7.4
1. N.C.
2. CLK
3. FOUT
4. N.C.
5. TEST
6. V
DD
7. CE
14. N.C.
13. DO
12. DI
11. GND
10. /INT
9. N.C.
8. N.C.
Descriptions
Serial clock input
32.768 kHz output
(Nch open drain)
TEST terminal
TEST
V
DD
CE
/INT
GND
DI
DO
VDD
Chip enable
Interrupt output
(Nch open drain)
GND
#1
#7
Data input
Data output
3.2
1.27
0.35
Preliminary
2002.8 Ver.0.1
EPSON [ EPSON COMPANY ]
