Low speed USB to serial bridge based on ST7263B
Features
■ PC executable software for HID
communication
■ CTS/RTS flow control
■ Two LEDs to indicate traffic direction
■ In-circuit programming capability through ICC
connector
■ Wrapping area capability with access to
MCU I/Os
Description
The board is a complete evaluation board for a
serial port bridge as well as an evaluation board
for ST72F63B/60 devices. This application is used
to interface devices with a serial port (RS232
type) and a host-computer USB port. USB data
transfers comply with HID-class protocols. The
bridge is based on a USB low-speed
microcontroller which provides a maximum
guaranteed USB transfer rate of 800 bytes per
second. The bridge application is evaluated on a
PC by running a dedicated applet that controls
and monitors data transfers on both the USB and
serial COM ports. The included hardware
provides in-circuit crogramming (ICP) capabilities
for the microcontroller and almost all the MCU I/
Os are available on expansion connectors to
evaluate different applications. The RS232 part
can be separated by removing the appropriate
soldering joints (shunts). This can be used to
modify certain firmware or hardware parameters
for evaluation or customization purposes.
STEVAL-PCC002V1
Data Brief
STEVAL-PCC002V1
October 2007 Rev 1 1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
Board schematic STEVAL-PCC002V1
1 Board schematic
Figure 1. Scheme
C6
100nFC9100nF
TxD
RTS
RxD
CTS
18
10
1
11
NC
GND
V-
SHDN
NC
ST3222E
7
20
14
C11
100nF
SHDN
9
PC1
TxD
SH1
PB1
RTS
SH2
PC0
RxD
SH3
PB4
CTS
SH4
PB0
SHDN
SH5
SH6
VDD
12
13915
4
6
5
C1-
C2-
C1+2C2+
VCC
V+
U3
3
19
C7
C5
100nF
8
17
100nF
12345
678
16
U1
VDD
PA0
PA1/ICCDATA
PA2/ICCCLK
1
31
40
PA0/MCO
PA2 (25mA)/SCL/ICCCLK
PA1 (25mA)/SDA/ICCDATA
OSCIN
9
PD6PD7
1 2
3 4
P1
PA3
PA4
PA5
28
30
PA3/EXTCLK
PA4/ICAP1/IT129PA5/ICAP2/IT2
PD4PD5
5 6
PA6
27
PD2PD3
7 8
PA7
PA7/COMP2/IT426PA6/COMP1/IT3
OSCOUT
8
J2
PA0PA1/ICCDATA
PA2/ICCCLKPA3
PA4PA5
PA6PA7
9 10
11 12
13 14
15 16
PB0
PB1
PB2
23
24
25
PB2 (10mA)/AIN2
PB1 (10mA)/AIN1
PB0 (10mA)/AIN0
RESET
Vpp/TEST
14
19
11
10
Header 8X2
PB3
PB4
PB5
PB6
22
20
PB3 (10mA)/AIN3
NC
15
16
D Connector 9
VDD
GREEN LED
PA1/ICCDATA
PA2/ICCCLK
1 2
3 4
P3
LED2
LED1
R6
RESET
VPP
5 6
YELLOW LED
7 8
OSCIN
10K
9 10
PC2
PA0
ICC FEATURE
VDD
USBVCC
1 2
3 4
5 6
7 8
9 10
11 12
13 14
PB6 PB7
PC0 PC1
PD0 PD1
PC2
PD0
32
11
PC2/USBOE
15 16
PB0 PB1
PB2 PB3
PB4 PB5
PD1
PD2
PD3
PD4
33
35
34
PD1/AIN9
PD0/AIN8
PD3/AIN11
PD2/AIN10
USBVCC5USBDM
USBDP
4
3
Header 8X2
PD5
37
PD6
2
PD7
VSSA
10
PD739PD638PD436PD5
VSS
ST72F63B_QFN40
ST72F60_QFN40 (Port D not available)
P2
PC2
PB7
PC0
PC1
13
12
PC0/RDI
PC1/TDO
PB7 (10mA)/IT8/AIN717PB6 (10mA)/IT7/AIN618PB4 (10mA)/IT5/AIN421PB5 (10mA)/IT6/AIN5
VDD
VDDA
NC
7
6
VDD
R5
220
R4
220
C8
OSCIN
R3
XT1
24MHz_NX2520SA
3 1
2
C1
18pF
4
C4
RESET
470
VPP
18pF
10nF
VDD
2/4
USBVCC
R2
1
J1
USBDM
1k5
2
D-
VBUS
USBDP
3
4
D+
GND
C10
USB CON
100nF
VDD
C2
10uF/6.3V
+
C3
100nF
STEVAL-PCC002V1 Revision history
2 Revision history
Table 1. Document revision history
Date Revision Changes
19-Oct-2007 1 Initial release
3/4
STEVAL-PCC002V1
y
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT
RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING
APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,
DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE
GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, an
liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
© 2007 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -
Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
4/4
Loading...