MIKROE-1043 mikroElektronika, MIKROE-1043 Datasheet - Page 36

• Manufacturer Part Number: MIKROE-1043
• Description: Development Boards & Kits - ARM EasyMxPRO v7 MCU Stellaris LM4F232H5Q
• Manufacturer: mikroElektronika

Specifications of MIKROE-1043

• Rohs: yes
• Product: Development Boards
• Tool Is For Evaluation Of: LM4F232H5Q
• Core: ARM Cortex M3, ARM Cortex M4
• Interface Type: CAN, I2C, SPI
• Operating Supply Voltage: 7 V to 23 V
• Data Bus Width: 8 bit
• Dimensions: 266 mm x 220 mm
• For Use With: LM4F232H5Q

What is SPI?
The Serial Peripheral Interface Bus or SPI bus is a synchronous serial data link standard that operates in full
duplex mode. It consists of four lines MISO (Master Input Slave Output), MOSI (Master Output Slave Input), SCK
(Clock) and CS (Chip Select). Devices communicate in master/slave mode where the master device initiates the
data frame. Multiple slave devices are allowed with individual slave select (chip select) lines.
page 36
DATA BUS
pages, or 1,048,576 bytes. Maximum clock frequency for READ instructions is 40MHz.
page is 256 bytes wide. Thus, the whole memory can be viewed as consisting of 4096
available memory, organized as 16 sectors, each containing 256 pages. Each
PA5
PA4
PA2
PC7
Memory which uses SPI communication interface and has 8 Mbits of
SW13
EasyMx PRO
USB Flash Drives, which are very popular today.
clock speeds. They are mostly used for mass storage, as in
memories come in different sizes and supporting different
FLASH-CS#
word (byte) to be written or read independently. Flash
SPI-MOSI
SPI-MISO
™
SPI-SCK
or pages, while the NOR type allows a single machine
v7 for Stellaris
must also be programmed and read in (smaller) blocks,
rewritten with new data. The high density NAND type
erased in fairly large blocks before these can be
programmable read-only memory) and must be
was developed from EEPROM (electrically erasable
can be electrically erased and reprogrammed. It
Flash memory is a non-volatile storage chip that
Serial Flash Memory
VCC-3.3V
®
8
7
6
5
features M25P80 serial Serial Flash
U5
25P80
VCC
HOLD
SDI
SCK
SDO
GND
WP
CS
VCC-3.3V
1
2
3
4
R36 27
R35
100K
FLASH-CS#
SPI-MISO
In order to connect Serial Flash Memory to
the microcontroller you must enable SW13.1,
SW13.2, SW13.3 and SW13.6 switches. This
connects SPI lines to PA5 (MOSI), PA4 (MISO),
PA2 (SCK) and PC7 (CS) microcontroller pins.
Enabling Serial Flash
VCC-3.3V
C26
100nF
EasyMx PRO
Figure 22-1:
Schematic of
Serial Flash
Memory
module
v7