RX8130CE

PACKAGE: 2000 pieces/Reel

ROHS STATUS: Compliant

PN: X1B00031100010

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Parameter Table

Sample

Block Diagram

Overview

I²C-Bus interface.
Auto power switching function
- The VDD voltage is monitored and it switches to the backup power supply by the automatic operation. The switch voltage to the backup power supply. 1.25V (Min.)
- Even if the main power supply voltage is decreased, the current flow from the backup power supply is prevented.
Charge control function for the rechargeable lithium batteries.
- Stop charging automatically by detecting the full charge.
- Records in the register detecting the backup power supply voltage decrease.
Reset function with a delay
- When the main power is supplied, reset output is released.The release voltage is selected by the register. (2.80V / 2.75V)
- Delay time from the voltage rise detection is 60ms Typ.
Frequency output function
- Output frequency is selectable from 32.768kHz, 1024Hz,1Hz.
Timer function
- Selectable in 1/4096 second from 65535 hours.
- Timer source clock are 1hour, 1min, 64Hz, 4096Hz.
- It is automatically recorded to TF-bit at the time of event occurrence, and possible to output with /IRQ pin.

Specifications (characteristics)

Refer to application manual for details.

Recommended Operating Conditions

Item	Symbol	Conditions	Min.	Typ.	Max.	Unit
Operating supply voltage	V_DD	-	1.25	3.0	5.5	V
Clock supply voltage	V_CLK	-	1.1	3.0	5.5	V
Operating temperature	T_OPR	-	-40	+25	+85	°C
VDD detect voltage	-V_DET2	V_DD,Fall	1.20	1.30	1.40	V

Frequency characteristics

Item	Symbol	Conditions	Rating	Unit
Frequency tolerance	Δ f / f	Ta = +25 °C V_DD = 3.0 V	B : 5 ± 23*	x 10^-6
Oscillation start-up time	t_STA	V_DD =2.75V to 5.5V	1 Max.	s

*Equivalent to ±1 minute of monthly deviation (excluding offset.)

Current consumption characteristics

Item	Symbol	Conditions	Min.	Typ.	Max.	Unit
Current consumption	I_BK	SCL=SDA = "L" , VBAT=3.0V ,VDD=VIO=0.0V	-	300	500	nA
Current consumption	V_32K	SCL=SDA = "H" , FOUT=32.768kHz, /IRQ=OFF, VDD=VIO=3.0V, FOUT pin CL=15pF CHGEN=L or VBAT≧VDET3	-	3.5	4.0	µA

Pin function

Signal Name	I / O	Function
SCL	input	Serial clock input pin.
SDA	Input / Output	Data input and output pin.
FOUT	Output	Frequency output pin with output control function. (C-MOS)Output frequency can be selected as 32.768kHz, 1024Hz, 1Hz.
/ RST	Output	Reset output pin.(N-ch open drain) In case of VDD voltage drop detection, a reset signal is outputted. In case of VDD voltage rise detection, it is released reset signal after 60ms.
/ IRQ	Output	Interrupts output by Alarm and Timer events.(N-ch open drain)
V_DD	-	This is a power-supply pin. It can impress the voltage unlike VIO.
V_IO	-	This is a interface power supply pin. This is a pin to supply the voltage same as a host.
V_out	-	Internal voltage output pin. Connect smoothing capacitor of 1.0µF
V_BAT	-	This is a power supply pin for backup battery. This is a pin to connect a large-capacity capacitor, a secondary battery,a primary battery. In a backup power supply operating range, the voltage is supplied inside by this pin.
GND	-	Connected to a ground

Terminal connection/External dimensions

(Unit: mm)

Footprint (Recommended)

(Unit: mm)

To maintain stable operation, provide a 0.1uF by-pass capacitor
at a location as near as possible to the power source terminal of the crystal product (between Vcc - GND).

Company Name

Name

Frequency

Dimensions

Voltage

Frequency Tolerance

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