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参数资料
| 型号： | RX-4581NBB-0 |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | REAL TIME CLOCK, PDSO22 |
| 封装： | SON-22 |
| 文件页数： | 1/3页 |
| 文件大小： | 259K |
| 代理商： | RX-4581NBB-0 |
77
Real time clock module
78
Real time clock module
SERIAL REAL TIME CLOCK MODULE WITH SRAM
RX-4581NB
Product number (please refer to page 5)
Q 4 1 4 5 8 1 9 x 0 0 0 4 0 0
Built in frequency adjusted 32.768 kHz crystal unit.
Include 128 bit (8 bit x 16) RAM
Serial interface which can be controlled by 4 or 3 signal lines.
Alarm and Timer IRQ function are Available.
32.768 kHz clock frequency output.
Low backup current : 0.4 A / 3 V (Typ.)
Wide operating voltage range : 1.6 V to 5.5 V
Available for lead (Pb) - free soldering.
Available for lead (Pb) - free terminal.
The details are mentioned in the application manual.
Specifications (characteristics)
Absolute Max. rating
Item
Symbol
Condition
Min.
Max.
Unit
Supply voltage
VDD
VDD to GND
-0.3
+7.0
V
Input voltage
VIN
Input Pin
GND -0.3
VDD+0.3
Output voltage
VOUT1
FOUT,DO
VDD+0.3
VOUT2
T
_______
IRQ,A
________
IRQ
+8.0
Storage temperature
TSTG
Stored as bare product
after unpacking
-55
+125
°C
Operating range
Item
Symbol
Condition
Min.
Max.
Unit
Power voltage
VDD
1.6
5.5
V
Clock voltage
VCLK
Operating temperature
TOPR
No condensation
-40
+85
°C
Frequency characteristics
Item
Symbol
Condition
Range
Unit
Frequency tolerance
Δf/f
Ta = +25 °C, VDD = 3.0 V
B: 5 ±23* x 10-6
Oscillation start up time
tSTA
Ta = +25 °C, VDD = 3.0 V
3 Max.
s
Frequency temperature
characteristics
Top
Ta = -10 to +70 °C,
Reference at +25 °C
+10
-120
x 10-6
Frequency voltage characteristics
f/V
Ta = +25 °C, VDD = 2.0 V to 5.0 V ±2 Max. x 10-6 / V
Aging
fa
Ta = +25 °C, VDD = 3.0 V, first year ±5 Max. x 10-6 / year
Please ask tighter tolerance
DC characteristics
(VDD = 1.6 V to 5.5 V, Ta = -40 °C to +85 °C )
Item
Symbol
Condition
Min.
Typ.
Max. Unit
Standby current 1
IDD1
VDD = 5 V
CEO, CE1, FOE = GND
A
_____
IRQ, T
_____
IRQ = VDD
32.768 kHz output is OFF.
0.6
1.2
A
Standby current 2
IDD2
VDD = 3 V
0.4
0.8
Input voltage
VIH
CEO , CE1 , DI
CLK , FOE
0.8 VDD
VDD+0.3
V
VIL
GND -0.3
0.2 VDD
Output voltage 1
VOH1
VDD = 5 V
IOH = -1 mA
DO, FOUT pins
4.5
5.0
V
VOH2
VDD = 3 V
2.0
3.0
VOH3
IOH=-100 A
DO, FOUT pins
2.9
Output voltage 2
VOL1
VDD = 5 V
IOL =1 mA
DO,FOUT pins
GND
GND +0.5
VOL2
VDD = 3 V
GND +0.8
VOL3
IOL=100 A
DO,FOUT pins
GND +0.1
VOL4
VDD = 5 V
IOL=1 mA
AIRQ, TIRQ pins
GND +0.25
VOL5
VDD = 3 V
GND +0.4
Terminal connection
#1
#11
#14
#22
No.
1
2
3
4
5
6
7
8
9
10
11
Pin terminal
GND
CE1
CEO
DI
DO
CLK
TIRQ
AIRQ
FOE
FOUT
VDD
No.
22
21
20
19
18
17
16
15
14
13
12
Pin terminal
N.C
—
External dimensions
(Unit: mm)
6.3 Max.
4.8
5.0
±0.2
1.3
0.5
0.2
±0.1
(SON 22-pin)
Metal may be exposed on the top or bottom of this product. This won't affect any quality, reliability or electrical spec.
Actual size
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