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参数资料
| 型号： | RTC-4574SAB-3 |
| 厂商： | EPSON TOYOCOM CORP |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO14 |
| 封装： | SOP-14 |
| 文件页数： | 10/14页 |
| 文件大小： | 620K |
| 代理商： | RTC-4574SAB-3 |
RTC
4574 SA / JE / NB
Page - 2
MQ302-07 SAJENB01
3. Terminal description
3.1. Terminal connections
RTC
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
8.
CE0
SOP
14 pin
RTC
4574 JE
1.
VDD
20.
N.C.
2.
FOUT
19.
N.C.
3.
CE0
18.
N.C.
4.
/ AIRQ
17.
N.C.
5.
/ TIRQ
16.
N.C.
6.
CLK
15.
N.C.
7.
DATA
14.
N.C.
8.
CE1
13.
N.C.
9.
FCON
12.
N.C.
10.
GND
11.
N.C.
VSOJ
20 pin
RTC
4574 NB
1.
GND
22.
N.C.
2.
FCON
21.
N.C.
3.
N.C.
20.
N.C.
4.
CE1
19.
N.C.
5.
DATA
18.
N.C.
6.
CLK
17.
N.C.
7.
/ TIRQ
16.
N.C.
8.
/ AIRQ
15.
N.C.
9.
CE0
14.
N.C.
10.
FOUT
13.
11.
VDD
12.
SON
22 pin
3.2. Pin Functions
Signal
name
I/O
Function
CE0
Input
This is a chip enabled 0 input pin with built-in pull-down resistors.
When both CE0 and CE1 pins are at the "H" level, access to this RTC becomes possible.
CE1
Input
This is a chip enabled 1 input pin.
When both CE0 and CE1 pins are at the "H" level, access to this RTC becomes possible.
When the CE1 pin is at the "H" level, regardless of the state of the CE0 pin, the FOUT pin is
in the output state.
When the pin is at the "L" level, the FOUT pin is at the high impedance level.
CLK
Input
This is a shift clock input pin for serial data transmission.
In the write mode, it takes in data from the DATA pin using the CLK signal rise edge.
In the read mode, it outputs data from the DATA pin using the fall edge.
DATA
Bi-directional
This is a data input/output pin for serial data transmission.
After the input rise of CE0 or CE1, by using the first 8-bit write data to set the write or read
mode, this pin can be set as either input pin or output pin.
FOUT
Output
This pin outputs the clock signal of frequency set up at the frequency setup register and
FCON input pin.
See the following table for details.
(CMOS output)
FCON
Input
This pin controls the FOUT output.
When the CE1 pin is at the "H" level, if the FCON pin is set to "L", then regardless of the
content of the frequency setup register, the FOUT pin outputs at 32.768 kHz.
See the table below for details.
/ AIRQ
Output
This is an open drain output pin dedicated for alarm interrupt.
/ TIRQ
Output
This is an open drain output pin dedicated for Timer interrupt.
VDD
-
This pin connects to the plus side of the power.
GND
-
This pin connects to the minus side (ground) of the power.
N.C.
-
This pin is not connected internally. Be sure to connect using OPEN, or GND or VDD.
But , In RTC-4574NB( SON-22pin ), all pins from 14 pin to 22 pin are connected with inside
frame mutually.
Note : Be sure to connect a bypass capacitor rated at least 0.1 F between VDD and GND.
相关PDF资料 |
PDF描述 |
|---|---|
| RTC-4574JEB | 0 TIMER(S), REAL TIME CLOCK, PDSO20 |
| RTC-4701JEB | REAL TIME CLOCK, PDSO20 |
| RTC-62423B-0 | REAL TIME CLOCK, PDSO24 |
| RTC-62423A-3 | 0 TIMER(S), REAL TIME CLOCK, PDSO24 |
| RTC-62423B-0 | REAL TIME CLOCK, PDSO24 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| RTC-4574SAB5+/-23PPM | 制造商:Epson Toyocom 功能描述:Serial Interface RTC SOP 14pin |
| RTC-4701JE | 制造商:Epson Toyocom 功能描述:RTC module,3Wire Serial,Alarm,temp senso |
| RTC-4701NB | 制造商:EPSONTOYOCOM 制造商全称:Epson ToYoCom 功能描述:Built-in Temperature Sensor SERIAL-INTERFACE REAL TIME CLOCK MODULE |
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