20-101-1067 Rabbit Semiconductor, 20-101-1067 Datasheet - Page 141

• Manufacturer Part Number: 20-101-1067
• Description: MODULE RABBITCORE RCM3305
• Manufacturer: Rabbit Semiconductor

Specifications of 20-101-1067

• Module/board Type: MPU Core Module
• Product: Microcontroller Modules
• Flash: 512 KBytes
• Timers: 10 bit
• Operating Supply Voltage: 3.15 to 3.45 V
• Board Size: 47 mm x 69 mm x 22 mm
• For Use With/related Products: RCM3305
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 316-1113

D.1 Power Supplies
Power is supplied from the motherboard to which the RCM3305/RCM3315 is connected
via header J4. The RCM3305/RCM3315 requires a regulated 3.15 V to 3.45 V DC power
source. An RCM3305/RCM3315 with no loading at the outputs operating at 44.2 MHz
typically draws 350 mA.
D.1.1 Battery Backup
The RCM3305/RCM3315 does not have a battery, but there is provision for a customer-
supplied battery to back up the data SRAM and keep the internal Rabbit 3000 real-time
clock running.
Header J4, shown in Figure D-1, allows access to the external battery. This header makes
it possible to connect an external 3 V power supply. This allows the SRAM and the inter-
nal Rabbit 3000 real-time clock to retain data with the RCM3305/RCM3315 powered
down.
User’s Manual
Appendix D provides information on the current requirements
of the RCM3305/RCM3315, and includes some background on
the reset generator.
Figure D-1. External Battery Connections
A
PPENDIX
at Header J4
D. P
OWER
S
UPPLY
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