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RTC-72421 B
User Manuals: Epson RTC-72421 B Clock Module
Manuals and User Guides for Epson RTC-72421 B Clock Module. We have
1
Epson RTC-72421 B Clock Module manual available for free PDF download: Applications Manual
Epson RTC-72421 B Applications Manual (25 pages)
Real Time Clock Module
Brand:
Epson
| Category:
Computer Hardware
| Size: 0.21 MB
Table of Contents
Table of Contents
3
Overview
4
Block Diagram
4
Terminal Connections
5
Terminal Functions
6
Characteristics
7
Absolute Maximum Ratings
7
Recommended Operating Conditions
7
Frequency Characteristics and Current Consumption Characteristics
7
Electrical Characteristics ( DC Characteristics )
7
Switching Characteristics (AC Characteristics)
8
When ALE Is Used
8
When ALE Is Fixed at
9
Registers
10
Register Table
10
Notes
10
Functions of Register Bits (Overview)
10
Setting the Fixed-Period Pulse Output Mode and Fixed-Period Interrupt Mode
11
Resetting the Fixed-Period Pulse Output Mode and Fixed-Period Interrupt Mode
11
Register Description
12
Timing Registers
12
CD Register (Control Register D)
13
CE Register (Control Register E)
14
CF Register (Control Register F)
16
Using the RTC-72421/RTC-72423
17
Power-On Procedure (Initialization)
17
Read/Write of S1 to W Registers
19
Write to 30-Second ADJ Bit
19
Using the CS Pin
20
Power Supply Circuit Example
20
Examples of Connection to General-Purpose Microprocessor
21
External Dimensions
22
Marking Layout
22
Reference Data
23
Application Notes
24
Notes on Handling
24
Notes on Packaging
24
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