Micro Crystal
Development Board
RV-8803-C7
RV-8803-C7
The RV-8803-C7 is soldered onto the Development Board.
Every pin is either accessible at test pins 1 – 8 or at the test vias situated around the device.
The following passive components are already soldered on the Board:
C1
10 nF
Decoupling capacitor between V
SS
and V
DD
R1
330 Ώ
Current limiting resistor for LED
LED green
Supply, current consumption of the LED has to be considered
R2
10 kΏ
Pull-up resistor SDA to V
DD
R3
10 kΏ
Pull-up resistor INT to V
DD
R4
10 kΏ
Pull-up resistor SCL to V
DD
DEVELOPMENT BOARD
JUMPER 1
EVI = HIGH
EVI = LOW
JUMPER 2
CLKOE = HIGH
CLKOE = LOW
JUMPER 3
V
BAT
= GND
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Micro Crystal
Development Board
SCHEMATICS
RV-8803-C7
PINOUT RV-8803-C7
# 1
# 2
# 3
# 4
SDA
CLKOUT
V
DD
CLKOE
# 8
# 7
# 6
# 5
SCL
EVI
INT
V
SS
PIN DESCRIPTION
Symbol
SDA
CLKOUT
1
2
Pin #
Description
Serial Data Input-Output pin; open-drain; requires pull-up resistor
Clock Output; push-pull; controlled by CLKOE. If CLKOE is active HIGH, the CLKOUT pin drives
the square wave of 32.768 kHz, 1.024 kHz or 1 Hz (Default value is 32.768 kHz). When CLKOE
is tied to Ground, the CLKOUT pin is high impedance (tri-state).
Positive supply voltage;
positive or negative steps in supply voltage may affect oscillator performance,
recommend 10 nF decoupling capacitor close to the device
Input to enable the CLKOUT pin. If CLKOE is active HIGH, the CLKOUT pin is in output mode.
When CLKOE is tied to Ground, the CLKOUT pin is stopped and is high impedance (tri-state).
Ground
Interrupt Output; open-drain; requires pull-up resistor; Used to output Alarm, Periodic Countdown
Timer, Periodic Time Update and External Event Interrupt signals.
External Event Interrupt Input.
I C Serial Clock Input; open-drain; requires pull-up resistor.
2
V
DD
CLKOE
V
SS
INT
k
EVI
SCL
3
4
5
6
7
8
Datasheet and Application-Manual are available for download under: www.microcrystal.com
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Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Micro Crystal
:
202689-AA00 RV-8803-C7-EVALUATION-BOARD
京公网安备 11010802033920号
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