RX-4581NB:B:ROHS Epson Toyocom Corporation, RX-4581NB:B:ROHS Datasheet

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RX-4581NB:B:ROHS

Manufacturer Part Number
RX-4581NB:B:ROHS
Description
IC REAL TIME CLOCK 22PIN-SON
Manufacturer
Epson Toyocom Corporation
Type
Clock/Calendar/NVSRAMr

Specifications of RX-4581NB:B:ROHS

Memory Size
16B
Time Format
HH:MM:SS (24 hr)
Date Format
YY-MM-DD
Interface
4-Wire Serial
Voltage - Supply
1.6 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
22-SON
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Signal Name Input/Output
∗ Please ask for tighter tolerance. (
Power voltage
Clock voltage
Operating
Frequency
Oscillation
Built-in SRAM
SERIAL-INTERFACE REAL TIME CLOCK MODULE
RX - 4581 NB
•Built in frequency adjusted 32.768 kHz crystal unit.
•Interface Type
•Operating voltage range
•Wide Timekeeper voltage range
•Low backup current
•Built-in SRAM
•32.768 kHz frequency output function : C-MOS output With Control Pin
•The various functions include full calendar, alarm, timer.
temperature
tolerance
start-up time
/ AIRQ
/ TIRQ
FOUT
Block diagram
Pin Function
Specifications (characteristics)
FOE
GND
CE0
CE1
CLK
V
Recommended Operating Conditions
Frequency characteristics
DO
FOUT
FOE
/ AIRQ
/ TIRQ
D I
DO
CLK
CE1
CE0
DI
Real time clock module
DD
Item
Item
Output
Output
Output
Output
32.768 kHz
Input
Input
Input
Input
Input
-
-
OSC
Symbol
Symbol
V
T
Δ f / f
V
t
STA
OPR
CLK
DD
The chip enabled input pin 0. ( It has a built -in pull-down resistance )
The chip enabled input pin 1. ( It does not have a built -in pull-down resistance )
The shift clock input pin for serial data transfer.
The data input pin for serial data trasfer.
The data output pin for serial data trasfer.
This pin outputs the reference clock signal at 32.768 kHz ( CMOS output ).
High impedance at the time of output off.
The input pin for the FOUT output control.
The open drain output pin for alarm and time update interrupts.
The open drain output pin for timer interrupt.
Connected to a positive power supply.
Connected to a ground.
Equivalent to 1 minute of monthly deviation)
T
V
T
V
FOUT
INTERRUPTS
BUS
a
a
DD
DD
= +25 °C
= +25 °C
Condition
INTERFACE
CONTROLLER
CONTROLLER
= 3.0 V
= 3.0 V
DIVIDER
-
-
-
Condition
CIRCUIT
:
: 1.6 V to 5.5 V
: 1.6 V to 5.5 V
: 0.4 μA / 3 V ( Typ. )
: Built-in 128 bit ( 8 bit × 16 ) RAM.
RAM 128 bit
4-wire serial interface
( 8 bit × 16 )
Min.
−40
1.6
1.6
Typ.
+25
Function
3.0
3.0
CLOCK
TIMER
ALARM
CONTROL
SYSTEM
3 Max.
5 ± 23 ∗
Rating
http://www.epsontoyocom.co.jp
CONTROLLER
and
CALENDAR
REGISTER
REGISTER
REGISTER
and
Max.
+85
5.5
5.5
× 10
Unit
Unit
°C
V
V
s
− 6
Actual size
Current
Consumption
Current consumption characteristics
Item
• Built-in SRAM
• Interface Type
• 32.768 kHz frequency output function
• Timer function
• Interrupt function
Overview
Symbol
• Include 128 bit ( 8 bit × 16 ) RAM.
• Serial interface in 4 lines form.
• FOUT pin output (C-MOS output), CL=30 pF
• FOE pin enables output on/off control.
• Timer function can be set up between
• It is recorded automatic to TF-bit at the time of event
• Alarm interrupt function , and timer interrupt function.
I
I
∗ It is possible to make it to 3 lines by wired-OR connecting
1/4096 second and 4095 minutes.
occurrence,and possible to output with /TIRQ pin output
(open-drain output).
32k
BK
DI and DO pins.
Terminal connection / External dimensions
CE0, CE1 = GND
FOE = GND
FOUT ;
CE0, CE1 = GND
FOE = V
FOUT ;
32.768 kHz output ON
CL = 30 pF
10.
11.
* Refer to application manual for details.
output OFF
1.
2.
3.
4.
5.
6.
7.
8.
9.
( Hi - z )
DD
Metal may be exposed on the top or bottom of this product.
Condition
This will not affect any quality, reliability or electrical spec.
GND
CE1
CE0
DI
DO
CLK
/ TIRQ
/ AIRQ
FOE
FOUT
V
Product Number (Please contact us)
RX-4581NB : Q41458191000200
DD
V
V
V
V
RX − 4581 NB
DD
DD
DD
DD
Epson Toyocom
= 5 V
= 3 V
= 5 V
= 3 V
SON − 22 pin
5.0
4.8
± 0.2
Min.
1.3
± 0.1
T
Typ.
0.6
0.4
8.0
5.0
a
= −40 °C to +85 °C
22.
21.
20.
19.
18.
17.
16.
15.
14.
13.
12.
Max.
20.0
12.0
1.2
0.8
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
Unit
μA
μA
(Unit:mm)

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