Grove Pro Mini LP
0097-060916-01
P r o d u c t S p e c i f i c a t i o n
Jumper Pin Functions
D5 Pin - Connects to D5 on the Grove Pro Mini LP Board
This pin is generally used to connect to the enable pin on the Serial RF Pro board to reduce power usage. It is a
general use pin connected to D5.
JP9 - Optional Non-Volatile FRAM
The MB85RC256V is a 256K-bits FRAM with serial interface (I2C), using the ferroelectric process and CMOS process
technologies for forming the nonvolatile memory cells. A FRAM is able to write high-speed even though it is a
nonvolatile memory. The optional FRAM module is much faster to read and write to than the included EEPROM device.
You can get this device from Adafruit (https://www.adafruit.com/products/1895)
It is suitable for the log management and the storage of the resume data, etc. Project Curacao (www.switchdoc.com)
uses it to record Weather data during the night when the Raspberry Pi is not powered up. Each byte can be read and
written instantaneously (like SRAM) but will keep the memory for 95 years at room temperature. Each byte can be read/
written 10,000,000,000,000 times.
JP8 - Optional FRAM Address
Used to set other I2C addresses for the Optional I2C FRAM Module. These are the I2C address selection pins. By
NAME
PIN
I/O
DESCRIPTION
VDD
JP6 / 1
A
VDD
GND
JP6 / 2
A
GND
WP
JP6 / 3
I
Write Protect pin. This is used to force write protection so you
cannot write to the FRAM. It has an internal pulldown. Bring to a
high voltage (VCC) to turn on WP
SCL
JP6 / 4
I
Serial bus clock line; open-drain input. No Pullup on Weather
Board board.
SDA
JP6 / 5
I/O
Serial bus data line; open-drain input/output. No Pullup on
Weather Board board
A2
JP6 / 6
I
High selection bit (use A2,A1,A0 as three bits and add to 0x50)
A1
JP6 / 7
I
Middle selection bit (use A2,A1,A0 as three bits and add to 0x50)
A0
JP7 / 8
I
Low selection bit (use A2,A1,A0 as three bits and add to 0x50)
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