Epson RX-8581JE, RX-8581NB, RX-8581SA 7.1. DC characteristics, Fixed-cycle, C Bus Interface, 3.2. Pin Functions, 10. Reference Data, 11. Application notes, 7.2. AC Characteristics

RX - 8581 SA / JE / NB

	Contents
1.	Overview...................................................................................................................	1
2.	Block Diagram........................................................................................................	1
3.	Terminal description.............................................................................................	2
	3.1. Terminal connections ..............................................................................................................	2
	3.2. Pin Functions .............................................................................................................................	2
4.	Absolute Maximum Ratings ..............................................................................	3
5.	Recommended Operating Conditions ...........................................................	3
6.	Frequency Characteristics.................................................................................	3
7.	Electrical Characteristics....................................................................................	3
	7.1. DC characteristics.........................................................................................................................	3
	7.2. AC Characteristics....................................................................................................................	4
8.	Use Methods...........................................................................................................	5
	8.1. Overview of Functions.............................................................................................................	5
	8.2. Description of Registers .........................................................................................................	6
	8.3. Fixed-cycle Timer Interrupt Function................................................................................	13
	8.4. Time Update Interrupt Function .........................................................................................	16
	8.5. Alarm Interrupt Function.......................................................................................................	18
	8.6. Reading/Writing Data via the I2C Bus Interface ...........................................................	21
	8.7. Backup and Recovery ...........................................................................................................	25
	8.8. Connection with Typical Microcontroller..........................................................................	25
9.	External Dimensions / Marking Layout........................................................	26
10. Reference Data .................................................................................................		27
11. Application notes ..............................................................................................		28
	11.1. Notes on handling ................................................................................................................	28
	11.2. Notes on packaging.............................................................................................................	28