MEDs Technologies Pte Ltd MBTM64 Manual Do Utilizador
MEDS Technologies Bluetooth Module64 Datasheet V0.8
CONFIDENTIAL
2nd-July-2012 12/18
Table 3.2.3: Example of bit clock frequency in a master mode
3.2.4 Serial Memory Interface
The serial memory interface can be selected as I2C or SPI bus interface that has the following features
The serial memory interface can be selected as I2C or SPI bus interface that has the following features
Operation Voltage : 1.8V or 3.3V
Interface mode ; I2C bus, SPI
Interface mode ; I2C bus, SPI
o
SPI Interface
Operation mode : SPI Master
Chip select : 2 channels
Chip select polarity : High active, low active
Serial clock frequency : 76.47kHz – 19.5MHz (CPU 39Hz)
101.96kHz – 26MHz (CPU 52MHz)
Serial data transfer mode : MSB first, LSB first.
Interface mode ; I2C bus, SPI
o
I2C Interface
Operation mode : I2C Master
Clock frequency : Standard mode (100kHz or less)
Fast mode (400Hz or less)
Output mode: Open drain output, CMOS output. Pull up resistors
Device address format: 7 bit address.
Figure 3.2.4a: Connection of Exernal Flash/EEPROM and other I2C Device
There are 2 I2C EEPROM already available on Module 64. One EEPROM is mandatory for storing of
unique Bluetooth device address for each module. The 2
unique Bluetooth device address for each module. The 2
nd
EEPROM is optional.
Figure 3.2.4b: Connection of External Serial Flash/EEPROM and order Serial devices