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参数资料
| 型号： | RTC-72421A |
| 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, PDIP18 |
| 封装： | DIP-18 |
| 文件页数： | 20/26页 |
| 文件大小： | 192K |
| 代理商： | RTC-72421A |
RTC - 72421 / 72423
CONTENTS
! Overview..............................................................................................1
! Block diagram......................................................................................1
! Terminal connections...........................................................................2
! Terminal functions ...............................................................................3
! Characteristics.....................................................................................4
1. Absolute maximum ratings ....................................................................................... 4
2. Recommended operating conditions......................................................................... 4
3. Frequency characteristics and current consumption characteristics ......................... 4
4. Electrical characteristics ( DC characteristics ) ......................................................... 4
! Switching characteristics (AC characteristics) ............................................5
1. When ALE is used .................................................................................................... 5
2. When ALE is fixed at VDD......................................................................................... 6
! Registers .............................................................................................7
1. Register table ........................................................................................................... 7
2. Notes ........................................................................................................................7
3. Functions of register bits (overview) ......................................................................... 7
4. Setting the fixed-period pulse output mode and fixed-period interrupt mode ............ 8
5. Resetting the fixed-period pulse output mode and fixed-period interrupt mode......... 8
! Register description .............................................................................9
1. Timing registers ........................................................................................................ 9
2. CD register (control register D) ............................................................................... 10
3. CE register (control register E) ............................................................................... 11
4. CF register (control register F)................................................................................ 13
! Using the RTC-72421/RTC-72423.....................................................14
1. Power-on procedure (initialization).......................................................................... 14
2. Read/write of S1 to W registers .............................................................................. 16
3. Write to 30-second ADJ bit ..................................................................................... 16
4. Using the CS1 pin ................................................................................................... 17
! Power supply circuit example.............................................................17
! Examples of connection to general-purpose microprocessor.............18
! External dimensions ..........................................................................19
! Marking layout ...................................................................................19
! Reference data ..................................................................................20
! Application notes ...............................................................................21
1. Notes on handling................................................................................................... 21
2. Notes on packaging ................................................................................................ 21
相关PDF资料 |
PDF描述 |
|---|---|
| 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 |
| 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 |
|---|---|
| RTC72421AROHS | 制造商:Epson Electronics America Inc 功能描述:Real Time Clock Parallel 18-Pin PDIP |
| RTC72421B | 制造商:Epson Toyocom Corporation 功能描述:IC RTC 72421 DIP18 制造商:Epson Toyocom Corporation 功能描述:IC, RTC, 72421, DIP18 制造商:Epson Toyocom Corporation 功能描述:IC, RTC; Clock Format:12Hr / 24Hr; Clock IC Type:RTC; Supply Voltage Min:4.5V; Supply Voltage Max:5.5V; Digital IC Case Style:DIP; No. of Pins:18; Operating Temperature Min:-40C; Operating Temperature Max:85C; Package / Case:18-DIP;RoHS Compliant: Yes |
| RTC-72421B | 功能描述:IC REAL TIME CLOCK 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-72421B PURE SN | 制造商:Epson Electronics America Inc 功能描述:REAL TIME CLOCK MODULE 4-BIT |
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