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参数资料
| 型号： | RTC-62423A-3 |
| 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, PDSO24 |
| 封装： | SOP-24 |
| 文件页数： | 19/24页 |
| 文件大小： | 195K |
| 代理商： | RTC-62423A-3 |
RTC - 62421 / 62423
Page - 1
MQ152-05
4-Bit Parallel Interface Real Time Clock Module
RTC-62421 /RTC-62423
Built-in quartz crystal removes need for adjustment and reduces installation costs
Microprocessor bus compatible(Tww, tRD = 120 ns)
Use of C-MOS IC enables low current consumption (1.8 A Max. at VDD = 2.0 V)
Compatibility with Intel CPU bus
Address latch enable (ALE) pin compatible with multiplex bus CPUs
Time (hours, minutes, seconds) and calendar (year, month, day) counter
24-hour/12-hour switch over and automatic leap-year correction functions
Fixed-period interrupt function
30-seconds correction (adjustment) function
Stop, start, and reset functions
Battery back-up function
Same mounting conditions as general-purpose SMD ICs possible (RTC-62423)
*
Pins and functions compatible with the MSM6242B series
! Overview
The RTC-62421 /RTC-62423 module is a real time clock that can be connected directly to a microprocessor's bus. Its built-in quartz
crystal enables highly accurate timekeeping with no physical access required for adjustment and, since there is no need to connect
external components, mounting and other costs can be reduced.
In addition to its time and calendar functions, the RTC-62421 /RTC-62423 enables the use of 30-seconds correction and fixed-period
interrupt functions.
The RTC-62421 /RTC-62423 module is ideally suited for applications requiring timing management, such as personal computers,
dedicated word processors, fax machines, multi-function telephones, and sequencers.
! Block diagram
OSC
RESET
bit
STOP
bit
30 sec ADJ
bit
Counter
HOLD
bit
BUSY
bit
D3
D2
D1
D0
WR
RD
A3
A2
A1
A0
CS0
ALE
CS1
S1
S10
MI1
MI10
H1
H10
W
D1
D10
MO1 MO10
Y1
Y10
64 Hz
1 Second carry
1 Minute carry
1 Hour carry
S1 to CF
CD
CE
CF
Gate
Latch
Decoder
24/12
bit
RTC-62421 /62423
STD.P
Output Selector
VDD
! Pin connections
RTC-62421
RTC-62423
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
10
11
STD.P
CS0
ALE
A0
A1
A2
A3
RD
GND
VDD
()
VDD
(VDD)
CS1
D0
1
2
3
WR
D
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
13
14
STD.P
CS0
ALE
A0
A1
A2
A3
RD
GND
N.C.
VDD
()
N.C
CS1
D0
D1
D2
D3
WR
VDD
()
VDD
N.C
The (VDD) pins are at the same electrical level as VDD. Do not connect these pins externally.
The N.C. pins are not connected internally. Ground them in order to prevent noise.
相关PDF资料 |
PDF描述 |
|---|---|
| RTC-62423B-0 | REAL TIME CLOCK, PDSO24 |
| RTC-72421A | 0 TIMER(S), REAL TIME CLOCK, PDIP18 |
| RTC-72421B | 0 TIMER(S), REAL TIME CLOCK, PDIP18 |
| RTC-72423A-0 | 0 TIMER(S), REAL TIME CLOCK, PDSO24 |
| RTC-72423B-0 | REAL TIME CLOCK, PDSO24 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| RTC63421 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:4-bit MULTIFUNCTIONAL REAL TIME CLOCK MODULE |
| RTC-63421 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:4-bit MULTIFUNCTIONAL REAL TIME CLOCK MODULE |
| RTC-63421A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Real-Time Clock |
| RTC-63421B | 功能描述:IC RTC SER +-50PPM 18-DIP RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 实时时钟 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 类型:时钟/日历 特点:警报器，闰年，SRAM 存储容量:- 时间格式:HH:MM:SS（12/24 小时） 数据格式:YY-MM-DD-dd 接口:SPI 电源电压:2 V ~ 5.5 V 电压 - 电源，电池:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WDFN 裸露焊盘 供应商设备封装:8-TDFN EP 包装:管件 |
| RTC-63421M | 制造商:未知厂家 制造商全称:未知厂家 功能描述:4-bit MULTIFUNCTIONAL REAL TIME CLOCK MODULE |
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