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Epson RX-8801SA/JE 7. Electrical Characteristics, •Temperature compensation and consumption current, Min, Typ, Max, Item, Unit, Page, Symbol, Condition, ETM26E-03

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RX − 8801 SA / JE

7. Electrical Characteristics

7.1. DC Characteristics			*Unless otherwise specified, GND = 0 V, VDD = 1.6 V to 5.5 V, Ta = −40 °C to +85 °C
Item		Symbol	Condition					Min.	Typ.	Max.	Unit

Current		IDD1	fSCL = 0 Hz, / INT = VDD			VDD	= 5 V		1.2	3.4
consumption (1)			FOE = GND								μA

Current		IDD2	FOUT : output OFF ( High Z )			VDD	= 3 V		0.8	2.1

consumption (2)			Compensation interval 2.0 s

Current		IDD3	fSCL = 0 Hz, / INT = VDD			VDD	= 5 V		3.0	7.5
consumption (3)			FOE = VDD
											μA
Current		IDD4	FOUT :32.768 kHz, CL =0pF			VDD	= 3 V		2.0	5.0

consumption (4)			Compensation interval 2.0 s
Current		IDD5	fSCL = 0 Hz, / INT = VDD			VDD	= 5 V		8.0	20.0
consumption (5)			FOE = VDD
											μA
Current		IDD6	FOUT :32.768 kHz, CL =30pF			VDD	= 3 V		5.0	12.0

consumption (6)			Compensation interval 2.0 s
Current		IDD7	fSCL = 0 Hz, / INT = VDD			VDD	= 5 V		1.15	2.95
consumption (7)			FOE = GND
											μA
Current		IDD8	FOUT : output OFF ( High Z )			VDD	= 3 V		0.72	1.85

consumption (8)			Compensation OFF
Current		IDD9	fSCL = 0 Hz, / INT = VDD			VDD	= 5 V		430	900
consumption (9)			FOE = GND
											μA
Current		IDD10	FOUT : output OFF ( High Z )			VDD	= 3 V		180	350

consumption (10)			Compensation ON ( peak )
High-level	input	VIH	FOE pin					0.8 ⋅ VDD		VDD + 0.3	V
voltage			SCL and SDA pins					0.7 ⋅ VDD		5.5

Low-level	input	VIL	FOE pin					GND − 0.3		0.2 ⋅ VDD	V
voltage			SCL and SDA pins					GND − 0.3		0.3 ⋅ VDD

High-level	output	VOH1	FOUT pin		VDD=5 V, IOH=−1 mA			4.5		5.0	V
		VOH2			VDD=3 V, IOH=−1 mA			2.2		3.0
voltage
		VOH3			VDD=3 V, IOH=−100 μA			2.9		3.0

		VOL1	FOUT pin		VDD=5 V, IOL=1 mA			GND		GND+0.5	V
		VOL2			VDD=3 V, IOL=1 mA			GND		GND+0.8
Low-level	output	VOL3			VDD=3 V, IOL=100 μA			GND		GND+0.1
voltage		VOL4	/ INT pin		VDD=5 V, IOL=1 mA			GND		GND+0.25	V
		VOL5			VDD=3 V, IOL=1 mA			GND		GND+0.4

		VOL6	SDA pin		VDD ≥2 V, IOL=3 mA			GND		GND+0.4	V
Input leakage		ILK	FOE, SCL, SDA pins , VIN = VDD or GND					−0.5		0.5	μA
current

Output leakage		IOZ	/ INT, SDA, FOUT pins, VOUT = VDD or GND					−0.5		0.5	μA
current

•Temperature compensation and consumption current

Compensation ON

0.977 ms

IDD9,10

Average

IDD7,8

Compensation OFF

IDD1,2

Compensation interval ( 2.0 s )

Page - 4

ETM26E-03

Contents

Page NOTICE RX - 8801 SA / JE Contents 2. Block Diagram 3. Terminal description 4. Absolute Maximum Ratings I2C-BusInterface Real-timeClock Module 1. Overview 2. Block Diagram 3. Terminal description RX − 8801 SA RX − 8801 JE 4. Absolute Maximum Ratings Item Symbol Condition Rating 7. Electrical Characteristics •Temperature compensation and consumption current Protocol SCL SDA 8. Use Methods 8.2. Description of Registers 8.2.1. Register table Address Remark SEC MIN 8.2.2. Control register (Reg F) Control Register CSEL1 1) CSEL0,1 ( Compensation interval Select 0, 1 ) bits CSEL0,1 3) AIE ( Alarm Interrupt Enable ) bit When an alarm interrupt event occurs, an interrupt signal is not generated or is canceled (/INT status changes from low to Hi-Z) When an alarm interrupt event occurs, an interrupt signal is generated (/INT status changes from Hi-Zto low) Flag register 1)UF ( Update Flag ) bit 2)TF ( Timer Flag ) bit 3)AF ( Alarm Flag ) bit 4)VLF ( Voltage Low Flag ) bit Extension Register USEL TSEL1 1)TEST bit This is the manufacturer's test bit. Its value should always be "0 8.2.6. Clock counter (Reg - 0 ∼ 2) •The clock counter counts seconds, minutes, and hours The data format is BCD format 1) Second counter 00 seconds Month Date update pattern 1, 3, 5, 7, 8, 10, or 4, 6, 9, or February in normal year 8.3. Fixed-cycleTimer Interrupt Function 8.3.1. Diagram of fixed-cycletimer interrupt function TE bit TIE bit /INT output TSEL1 TSEL0 Flag Register When the 1) TSEL0,1 bits (Timer Select 0, 1) SCL pin SDA pin /INT pin 8.4. Time Update Interrupt Function ∗When the RESET bit value is "1" time update interrupt events do not occur 1) USEL (Update Interrupt Select) bit Selects "second update" (once per second) as the timing for generation of interrupt events Selects "minute update" (once per minute) as the timing for generation of 8.5. Alarm Interrupt Function ∗When the RESET bit value is "1" alarm interrupt events do not occur 1) WADA (Week Alarm /Day Alarm) bit WADA Sets WEEK as target of alarm function (DAY setting is ignored) 3) AF (Alarm Flag) bit The AF bit is cleared to zero to prepare for the next status detection Alarm interrupt events are not detected Alarm interrupt events are detected 4) AIE (Alarm Interrupt Enable) bit 8.6. Reading/Writing Data via the I2C Bus Interface 0.95 s ( Max. ) 1) START condition, repeated START condition, and STOP condition (1)START condition The SDA level changes from high to low while SCL is at high level (2)STOP condition However, the transfer time must be no longer than 0.95 seconds After address Fh, incrementation goes to address 0h [0110 65 h 64 h Page Unit I2C-BUS Master RX-8801 9. External Dimensions / Marking Layout 9.1. RX − 8801 SA ( SOP − 14pin ) ( SOP 14pin ) 9.1.1. External dimensions 9.2.RX − 8801 JE ( VSOJ − 20pin ) 9.2.1. External dimensions RX − 8801 JE ( VSOJ − 20pin ) • External dimensions • Recommended soldering pattern 10.Application notes 1)Notes on handling 2) Notes on packaging AMERICA EUROPE Distributor Electronic devices information on WWW server http://www.epsontoyocom.co.jp