MPR/MIB User’s Manual
Wireless Sensor Networks
Doc. # 7430-0021-06 Rev. A
Page 32
9 F
LASH
D
ATA
L
OGGER AND
S
ERIAL
ID C
HIP
All Motes feature a 4-Mbit serial flash (Atmel AT45DB041) for storing data, measurements, and
other user-defined information. It is connected to one of the USART on the ATMega128L. This
chip is supported in TinyOS which uses this chip as micro file system. The serial flash device
supports over 100,000 measurement readings. This chip is also used for over-the-air
reprogramming services available in TinyOS.
Also on the MICA2 is a 64-bit serial ID chip.
X
NOTE:
This device consumes 15 mA of current when writing data.
FLASH_CS
VCC
USART_CLK
USART1_TXD
SI
SCK
RST
CS
WP
SO
1
2
3
4
USART1_RXD
8
x
5
Atmega AT45DB041
FLASH_CS
VCC
USART_CLK
USART1_TXD
SI
SCK
RST
CS
WP
SO
1
2
3
4
USART1_RXD
8
x
5
Atmega AT45DB041