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PDF STR720-EVAL Data sheet ( Hoja de datos )
| Número de pieza | STR720-EVAL | |
| Descripción | Evaluation Board for STR72xF | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de STR720-EVAL (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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STR720-EVAL
Evaluation Board for STR72xF
STR720-EVAL
board
High speed JTAG
debug port
connection
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Host to JTAG
interface
Main components
■ STR720 processor running at 66 MHz
■ EMI flash 4 Mbytes (2M x 16)
■ SMI SDRAM 16 Mbytes (2 x (4M x 16))
■ SPI serial flash
■ LCD display
Features
■ Support for the following interfaces:
– ATAPI
– USB
– CAN
– RS232
■ LED displays
■ Test buttons
■ JTAG connector
Description
The STR720-EVAL board is a complete
development platform for the STR720 series. It is
a cost effective, flexible and open design to
demonstrate the capability of the STR720 series
of microcontrollers and enable rapid evaluation of
the STR720 devices and peripherals. It uses the
high performance STR720 ARM720TTM device
that embeds 8 Kbytes unified cache, has a
memory management unit (MMU), 16K program
RAM and numerous peripheral interfaces,
including USB and CAN.
The STR720-EVAL board includes shared
memory interface (SMI) SDRAM and flash
memory on the external memory interface (EMI)
to enable freedom in development of large
programs before custom hardware is designed. It
integrates a 2 x 16 LCD, LEDs, UART, CAN, USB
interfaces and test buttons to create a versatile
stand-alone test platform. A wide choice of third
party development tools are available in addition
to those available from STMicroelectronics.
October 2005
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Rev 2
1/31
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STR720-EVAL
1 Introduction
● Clocking:
– +3.3 V surface mounted 16 MHz oscillator provides the main clock source,
– RTC real-time clock with embedded 32 KHz oscillator.
● Serial ROM. A 1-Mbit SPI serial flash connected to the buffered serial peripheral interface
(BSPI): IC20.
1.2 Board interface connections
Diagrams and wiring descriptions for these connectors are provided in Section 4 on page 18.
The following connections are supported by the board:
● USB support USB device using a type B connector: CN8,
● CAN uses a single 9 D-type connector with microswitch selectable low or high speed
transceiver: CN7,
● UART1 (Rx and Tx only) connected to a 9-way male D-type RS232 connector: CN5,
● UART2 (Rx and Tx only) connected to a 9-way male D-type RS232 connector: CN6,
● JTAG, 20 pin IDC connector: CN2,
● variable resistor voltage range 0 to 2.5 V: VR1,
● LM35 temperature sensor: IC4,
● prototype area: GD1,
● test points various test points are located throughout the board, for details see Section 4.1
on page 18,
● main power supply: CN1.
1.3 Push buttons
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The following push buttons are provided, they are described further in Section 2.13 on page 10:
● reset (RST), board reset: SW1,
● previous (PRV), programmable switch: SW8,
● next (NXT), programmable switch: SW9,
● select (SEL), programmable switch: SW10,
● RTC reset (RTCRST): SW11.
1.4 Displays
The following LCD and LEDs are provided:
● LCD write-only display, 2x16 LCD display connected to the EMI using a buffer and address
decode logic, green back light display: LCD1,
● surface mount red +5 V and +3.3 V power indicators: LD1, LD2,
● surface mount yellow, IDE ATAPI +3.3 V power indicator: LD3,
● surface mount yellow, USB connection indicator: LD18,
● bi-color red/green, reset indicator: LD4,
● low consumption LEDs red: LD5, LD6, LD7, LD8, LD9, LD10, LD11, LD12, LD13, LD14,
LD15, LD16, LD17.
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STR720-EVAL
2 Hardware
Status LEDs
Table 4. Status LEDs
LED
Description
LD1
LD2
LD3
LD4
LD18
+5 V
+3.3 V
ATAPI HDD
reset indicator
USB indicator
Schematic
Section 4.2 on page 19
Section 4.2 on page 19
Section 4.5 on page 22
Section 4.1 on page 18
Section 4.9 on page 26
Color
Red
Red
Yellow
Red/green
Yellow
2.13 Push buttons
Table 5. Status push buttons
Button
Connected to
Board reset SW1 power on reset
Previous SW8
P3.10_EINT2
Next SW9
Select SW10
P3.8_EINT0
P3.9_EINT1
RTC reset SW11 not RTC_reset
Schematic
Section 4.8 on page 25
Section 4.1 on page 18
Section 4.1 on page 18
Section 4.1 on page 18
Section 4.1 on page 18
2.14
Option jumper placement
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Jumpers are fitted as shown in Figure 4, the position of the jumbers on the board are shown in
Figure 5 on page 11.
Figure 4. Jumper positions
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Not fitted
Do not fit
Fitted
Table 6. Option jumpers
Jumper
Figure
J1 Section 4.8 on page 25
J2 Section 4.10 on page 27
Description
notRST to notJTRST connect: fitted = enabled,
not fitted = disabled
CAN loopback link: not fitted / fitted (default)
Default
Fitted
Not fitted
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| PDF Descargar | [ Datasheet STR720-EVAL.PDF ] | |
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