REAL TIME CLOCK MODULE
Real time clock module
REAL TIME CLOCK MODULE (I2C-Bus)
Built-in 32.768 kHz-DTCXO, High Stability and Power Switching
RX...
Description
Real time clock module
REAL TIME CLOCK MODULE (I2C-Bus)
Built-in 32.768 kHz-DTCXO, High Stability and Power Switching
RX 8900 SA/CE
CE
Product Number (Please contact us)
RX8900SA : X1B000292xxxx00 RX8900CE UA : X1B000301000100 RX8900CE UB : X1B000301000200 RX8900CE UC : X1B000301000300
Built in frequency adjusted 32.768 kHz crystal unit and DTCXO.
Interface Type
: I2C-Bus interface (400kHz)
Interface voltage range
: 2.5 V to 5.5 V
Temp. compensated voltage range : 2.0 V to 5.5 V
Clock supply voltage range
: 1.6 V to 5.5 V
Selectable clock output (32.768 kHz, 1024 Hz, 1 Hz)
Actual size
The various functions include full calendar, alarm, timer, temp. sensor function.
.Epson prepared Linux driver for development.
RX8900SA
(http://www5.epsondevice.com/en/information/support/linux_rtc/)
The registered trademark Linux® is used pursuant to a sublicense from LMI(Linux Mark Institute)
The I2C-Bus is a trademark of NXP Semiconductors.
RX8900SA (10.1 × 7.4 × 3.3 mm)
RX8900CE
RX8900CE (3.2 × 2.5 × 1.0 mm)
Block diagram
VDD
VDD Detector
Battery backup connection example (1) VBAT
R
primary battery
C
VBAT
Battery backup connection example (2) VBAT
R
EDLC or
secondary battery
C
Register Control
(System Control)
DTCXO
Divider
Bus Interface
Alarm Register
Timer Register Interrupts Controller
Clock and Calender
FOUT Controller
GND
LVEL SHIFTER
FOE
SCL SDA FOUT /INT
Overview
High Stability UA ± 3.4 x 10-6 / -40 ºC to +85 ºC ( Equivalent to ±9 se...
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