參數(shù)資料
型號(hào)： RX-4801SA
廠商： EPSON TOYOCOM CORP
元件分類： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： REAL TIME CLOCK, PDSO14
封裝： ROHS COMPLIANT, SOP-14
文件頁(yè)數(shù)： 1/2頁(yè)
文件大?。?/td> 688K
代理商： RX-4801SA
Actual size
http://www.epsontoyocom.co.jp
Real time clock module
Epson Toyocom
Block diagram
Overview
32kHz
DTCXO
32.768 kHz
CLOCK
and
CALENDAR
TIMER
REGISTER
ALARM
REGISTER
FOUT
CONTROLLER
CONTROL
REGISTER
and
SYSTEM
CONTROLLER
DIVIDER
INTERRUPT
CONTROLLER
INTERFACE
CIRCUIT
FOUT
FOE
/ INT
CLK
DO
D I
CE
High Stability
UA
± 1.9 x 10
-6
/
0 C to +40 C
( Equivalent to 5 seconds of month deviation )
± 3.4 x 10
-6
/
-40 C to +85 C
( Equivalent to 9 seconds of month deviation )
UB
± 3.8 x 10
-6
/
0 C to +50 C
( Equivalent to 10 seconds of month deviation )
± 5.0 x 10
-6
/
-40 C to +85 C
( Equivalent to 13 seconds of month deviation )
32.768 kHz frequency output function
FOUT pin output (C-MOS output), CL=30 pF
Output selectable
< 32.768 kHz, 1024 Hz, 1 Hz >
The various interrupt
Timer Function can be set up between
1/ 4096 second and 255 minutes.
Alarm Function can be set to day of week,
day, hour, or minute.
Pin Function
Terminal connection / External dimensions
(Unit:mm)
Signal Name
Pin No.
I / O
Function
CE
1
input
The chip enable input pin.
CLK
2
input
The shift clock input pin for serial data transfer.
FOUT
3
Output
The pin outputs the refarence clock signal.
( CMOS output )
TEST
5
input
* Use by the manufacture for testing.
( Do not connect externally.)
VDD
6
-
Connected to a positive power supply
FOE
7
input
The input pin for the FOUT output control.
/ INT
10
Output
The open drain output for interrupt.
GND
11
-
Connected to a ground
T2(VPP)
12
-
* Use by the manufacture for testing.
( Do not connect externally.)
DO
13
Output
The data output pin for serial data transfer.
D I
14
input
The data input pin for serial data transfer.
RX
4801 SA
1.
CE
14.
DI
2.
CLK
13.
DO
3.
FOUT
12.
T2(VPP)
4.
N.C.
11.
GND
5.
TEST
10.
/ INT
6.
VDD
9.
N.C.
7.
FOE
10
.1
±
0.
2
5.0
7.4 ± 0.2
3.
2
±
0.
1
1.
27
8.
N.C.
SOP
14 pin
Metal may be exposed on the top or bottom of this product.
This will not affect any quality, reliability or electrical spec.
Specifications (characteristics)
Refer to application manual for details.
! Electrical Characteristics
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Interface voltage
VDD
Interface voltage
1.8
3.0
5.5
V
Temp. compensated
voltage
VTEM
Temp. compensated voltage
2.2
3.0
5.5
V
Clock voltage
VCLK
-
1.6
3.0
5.5
V
Operating temperatue
TOPR
No condensation
40
+25
+85
°C
Ta = 0 C to +40 C
±1.9 1
UA
Ta = -40 C to +85 C
±3.4 2
Ta = 0 C to +50 C
±3.8 3
Stability
f / f
UB
Ta = -40 C to +85 C
±5.0 4
× 10 6
Current consumption
(1)
IDD1
VDD = 5V
-
1.2
3.4
Current consumption
(2)
IDD2
Backup Mode
FOE = GND,
/INT = VDD
FOUT output : OFF VDD = 3V
-
0.8
2.8
A
1 ) Equivalent to 5 seconds of month deviation. 2 ) Equivalent to 9 seconds of month deviation.
3 ) Equivalent to 10 seconds of month deviation. 4 ) Equivalent to 13 seconds of month deviation.
Built-in 32.768 kHz-DTCXO, High Stability
SERIAL-INTERFACE REAL TIME CLOCK MODULE
RX - 4801 SA
Built in frequency adjusted 32.768 kHz crystal unit and DTCXO.
Interface Type
: 4-wire serial interface
Interface voltage range
: 1.8 V to 5.5 V
Temp.compensated voltage range: 2.2 V to 5.5 V
Wide Timekeeper voltage range : 1.6 V to 5.5 V
32.768 kHz frequency output function : C-MOS output With Control Pin
The various functions include full calendar, alarm, timer.
!
! 32.768 kHz-DTCXO Frequency temperature characteristics (Example)
Frequency temperature characteristics
-30
-25
-20
-15
-10
-5
0
5
10
-45
-35
-25
-15
-5
5
15
25
35
45
55
65
75
85
Temperature (C)
F
reque
nc
y
t
o
le
ra
n
c
e
(
×
1
0
-6
)
Tuning fork X'tal
32.768 kHz DTCXO
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