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参数资料
| 型号： | RTC-72421B |
| 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, PDIP18 |
| 封装： | DIP-18 |
| 文件页数： | 20/26页 |
| 文件大小： | 192K |
| 代理商： | RTC-72421B |
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-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 |
| RTC-7301SFB | REAL TIME CLOCK, PDSO24 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| RTC-72421B PURE SN | 制造商:Epson Electronics America Inc 功能描述:REAL TIME CLOCK MODULE 4-BIT |
| RTC72421B | 制造商:Epson Toyocom Corporation 功能描述:IC RTC 72421 DIP18 |
| RTC-72421B0 ROHS | 制造商:Epson Electronics America Inc 功能描述: |
| RTC72423 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:4-bit REAL TIME CLOCK MODULE |
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