TMS320-P28027 Olimex Ltd., TMS320-P28027 Datasheet - Page 9

• Manufacturer Part Number: TMS320-P28027
• Description: Microcontroller & Microprocessor Development Tools PROTOTYPE BOARD TMS320F28027
• Manufacturer: Olimex Ltd.

Specifications of TMS320-P28027

• Processor To Be Evaluated: TMS320F28027
• Data Bus Width: 32 bit
• Interface Type: UART, SPI, I2C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

POWER SUPPLY CIRCUIT
RESET CIRCUIT
CLOCK CIRCUIT
JUMPER DESCRIPTION
GPIO34
#TRST
TDO
3.3VA_REF
3.3V_REF
1
1
1
0
0
0
BOOT SELECT
GET MODE
WAIT
SCI
I2C
PARALLEL I/O
EMULATION BOOT
Connects VREFHI to analog 3.3 V.
Default state is closed.
TMX320-P28027 board can take power from POWER connector (4.5-6VAC or 6-
9VDC), from VIN on the prototype area (5-9VDC), from MOTOR connector pin 4 (5-
9VDC) and from USB connector.
The board power consumption is around 90mA with all peripherals and MCU
running at full speed.
Reset circuit includes R11 (10k), R12 (100 Ohm) and TMS320F28027 pin 3 (XRS).
Although on the schematic is made provision for external reset by the RST button.
Quartz crystal 20Mhz is connected to TMS320F28027 pin 45 (X1) and pin 46 (X2).
The jumpers TDO, GPIO34 and #TRST selects boot mode source. The table bellow
shows boot mode variants.
Default state: GET MODE
TDO
1
1
0
1
0
X
Page 9
GPIO34
1
0
1
0
0
X
#TRST
0
0
0
0
0
1