RX8900CE

PACKAGE: 2000 pieces/Reel

ROHS STATUS: Compliant

PN: X1B00031100010

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Parameter Table

Sample

Block diagram

Overview

High Stability
- UA ± 3.4 x 10^-6 / -40 °C to +85 °C ( Equivalent to ±9 seconds of month deviation )
- UB ± 5.0 x 10^-6 / -40 °C to +85 °C ( Equivalent to ±13 seconds of month deviation )
- UC ± 5.0 x 10^-6 / -30 °C to +70 °C ( Equivalent to ±13 seconds of month deviation )
32.768 kHz frequency output function
- FOUT pin output (C-MOS output), CL=30 pF
- Output selectable: 32.768 kHz, 1024 Hz, 1 Hz
Available automatic battery backup switch-over function
- Charge from VDD to backup battery connected to VBAT is possible.
  VDD voltage drop(VDET3) detection and automatically switches to the backup battery.
  This circuit is optimal to backup with a secondary battery and a large capacitor.
Timer function
- Timer period is adjustable in 1/4096 second from 4095 minutes
Alarm function
- Available dual-alarm, weekly and monthly
Temp. sensor function
- Available readout temperature data from embedded temp sensor. (Bank.2_Add17h)

Specifications (characteristics)

Refer to application manual for details.

Electrical Characteristics

Item	Symbol	Conditions			Min.	Typ.	Max.	Unit
Operating voltage	V_DD	Interface voltage			2.5	3.0	5.5	V
Temp. compensated Voltage	V_TEM	Temp. compensated voltage			2.0	3.0	5.5	V
Clock supply voltage	V_CLK	Internal clock			1.6	3.0	5.5	V
Operating temperature	T_OPR	No condensation			-40	+25	+85 *3	°C
Stability	Δ f/f	UA	T_a=-40°C to+85°C		±3.4 *1			x10^-6
		UB	T_a=-40°C to+85°C		±5.0 *2
		UC	T_a=-30°C to+70°C		±5.0 *2
Current consumption(1)	l_DD1	fSCL=0Hz,/INT=V_DD, FOE=GND, V_DD=V_BAT FOUT:OFF Temp. Compensation interval 2.0 s.		V_DD=5V	-	0.72	1.5	µA
Current consumption(2)	l_DD2			V_DD=3V	-	0.70	1.4	µA

*1 Equivalent to ±9 seconds of month deviation.
*2 Equivalent to ±13 seconds of month deviation.
*3 Please contact us about +85°C < T_OPR

32.768 kHz-DTCXO Frequency temperature characteristics (Example)

Pin function

Signal Name	I / O	Function
T1(CE)	input	Use by the manufacture for testing. ( Do not connect externally.)
SCL	input	Serial clock input pin.
FOUT	output	The pin outputs the reference clock signal. ( CMOS output )
V_BAT	-	Battery supply. This pin has charge capability to backup battery.
V_DD	-	Connected to a positive power supply
FOE	input	The input pin for the FOUT output control.
/ INT	output	Interrupt output (N-ch. open drain).
GND	-	Connected to a ground
T2(V_PP)	-	Use by the manufacture for testing. ( Do not connect externally.)
SDA	I/O	Data input and output pin.

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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