- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄66121 > RA-4574SA 1 TIMER(S), REAL TIME CLOCK, PDSO14 PDF資料下載
參數(shù)資料
| 型號： | RA-4574SA |
| 元件分類： | 時鐘/數(shù)據(jù)恢復及定時提取 |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO14 |
| 封裝： | SOP-14 |
| 文件頁數(shù)： | 1/2頁 |
| 文件大小： | 516K |
| 代理商： | RA-4574SA |
Actual size
http://www.epsontoyocom.co.jp
Real time clock module
Epson Toyocom
Block diagram
Overview
BUS
INTERFACE
CIRCUIT
CE 1
CLK
DATA
32.768 kHz
CE 0
CONTROL
REGISTER
SHIFT REGISTER
ALARM
REGISTER
TIMER
REGISTER
CLOCK and
CALENDAR
INTERRUPTS
CONTROLLER
OUTPUT
CONTROLLER
DIVIDER
CONTROL LINE
FOUT
/ TIRQ
/ AIRQ
OSC
FCON
32.768 kHz frequency output function
FOUT pin output (C-MOS output ), CL=30 pF
Output frequency selectable from 1/30 Hz to 32.768 kHz(32 Values)
Timer function
Timer function can be set between 1/4096 second and 255 minutes.
It is recorded automatically to TF-bit at the time of event
occurrence, and it’s possible to output with /TIRQ pin output
(open-drain output).
Selectable one time mode or repeat mode.
Alarm function
Alarm function can be set to any combination of day of
week, hour, or minute.
It is recorded automatically to AF-bit at the time of event
occurrence, and it’s possible to output with /AIRQ pin output
(open-drain output).
Pin Function
Terminal connection / External dimensions
(Unit:mm)
Signal Name Input / Output
Function
CE0
Input
The chip enabled input pin 0. (Built-in pull-down resistance)
When both CE0 and CE1 pins are at the “H” level , access to this
Real time clock module becomes possible.
CE1
Input
The chip enabled input pin 1.
When the CE1 pin is at the HIGH level, the FOUT pin is in the output state.
CLK
Input
The shift clock input pin for serial data transfer.
DATA
Bi-directional
The data input / output pin for serial data transfer.
FOUT
Output
This pin outputs the reference clock signal at 32.768 kHz ( C-MOS output ).
High impedance at the time of output off.
FCON
Input
The input pin for the FOUT output control.
/ AIRQ
Output
The open drain output pin for alarm and time update interrupts.
/ TIRQ
Output
The open drain output pin for timer interrupt.
VDD
-
Connected to a positive power supply.
GND
-
Connected to a ground.
RA
4574 SA
1.
GND
14.
FCON
2.
FOUT
13.
CE1
3.
N.C.
12.
DATA
4.
N.C.
11.
CLK
5.
N.C.
10.
/ TIRQ
6.
N.C.
9.
/ AIRQ
7.
VDD
10
.1
±
0.
2
5.0
7.4 ± 0.2
3.
2
±
0.
1
1.
27
8.
CE0
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.
Recommended Operating Conditions
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Power voltage
VDD
-
1.6
3.0
5.5
V
Clock voltage
VCLK
-
1.6
3.0
5.5
V
Operating
temperature
TOPR
-
40
+25
+85
°C
Frequency characteristics
Item
Symbol
Condition
Rating
Unit
Frequency
tolerance
f / f
Ta = +25 °C
VDD = 3.0 V
5
± 23
× 106
Oscillation
start-up time
tSTA
Ta = +25 °C
VDD = 1.6 V
3 Max.
s
Equivalent to 1 minute of monthly deviation
Current consumption characteristics
Ta =
40 °C to +85 °C
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
VDD
= 5 V
1.0
2.0
IBK
CE0, CE1 = GND
FOUT ;Output OFF
( Hi - z )
VDD
= 3 V
0.5
1.0
A
VDD
= 5 V
8.0
20.0
Current
Consumption
I32k
CE0 = GND
CE1 = VDD
FOUT ;
32.768 kHz output ON
CL = 30 pF
VDD
= 3 V
5.0
12.0
A
For Automotive
SERIAL-INTERFACE REAL TIME CLOCK MODULE
RA - 4574 SA
Built in frequency adjusted 32.768 kHz crystal unit.
Interface Type
: 3-wire serial interface
Operating voltage range
: 1.6 V to 5.5 V
Wide Timekeeper voltage range : 1.6 V to 5.5 V
Low backup current
: 0.5
A / 3 V (Typ.)
32.768 kHz frequency output function : C-MOS output With Control Pin
The various functions include full calendar, alarm, timer.
Conforms to AEC-Q200
Product Number (Please contact us)
RA-4574SA : Q41A47451xxxx00
相關PDF資料 |
PDF描述 |
|---|---|
| RA-8565SA | REAL TIME CLOCK, PDSO14 |
| RAB362-R3K/B1K-4L | DUAL COLOR LED, SUPER RED/SUPER BLUE, 7.8 mm |
| RAB362B2K-4L | SINGLE COLOR LED, SUPER BLUE, 7.8 mm |
| RAB362B2K | SINGLE COLOR LED, SUPER BLUE, 8.61 mm |
| RAB362R3K | SINGLE COLOR LED, ULTRA RED, 8.61 mm |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| RA45A31100 | 制造商:E-Switch Inc 功能描述:RA4 Series |
| RA45H4045MR | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:400-450MHz 45W 12.5V, 3 Stage Amp. For MOBILE RADIO |
| RA45H4045MR_10 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:400-450MHz 45W 12.5V, 3 Stage Amp. For MOBILE RADIO |
| RA45H4045MR_11 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:RoHS Compliance, 400-450MHz 45W 12.5V, 3 Stage Amp. For MOBILE RADIO |
發(fā)布緊急采購，3分鐘左右您將得到回復。