ST STR9 User manual

October 2007 Rev 2 1/9
UM0375
User manual
STR9 LCD extension board
Introduction
This user manual describes STR9 LCD extension hardware. As well as the block diagram
and schematics of the extension, a bill of materials and assembly instructions are also
included.
The STR9 LCD extension provides a graphic or character-based output to an application
using the STR9 Dongle. The switches allow the pinout of the extension to be configured for
use with different types of LCDs.
Figure 1. STR9 LCD extension board
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Contents
1 STR9 LCD module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 PCB layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5 Bill of materials and assembly instructions . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

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1 STR9 LCD extension
1.1 Block diagram
This board is designed for use with the STR9 Dongle.
Figure 2. STR9 extension board block diagram
Main board features:
●Jumpers allowing the extension board to be connected to many types of LCDs.
EXTENDED_CONNECTOR
16 x GPIO, VCC, Gnd
SWITCHES
LCD_CONNECTOR
configurable
STA

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1.2 Schematics
Figure 3. STR9 extension board schematics
1.3 Configuration
Table 1. Extension board configuration according to LCD types
SWITCH POS. CONF. A CONF. B CONF. C CONF. D CONF. E
NAME 1-2 2-3 PIN SW PIN SW PIN SW PIN SW PIN SW
SW1 GND P30 GND 1-2 GND 1-2 GND 1-2 CS1^ 2-3 GND 1-2
SW2 VDD P31 VCC 1-2 VCC 1-2 VCC 1-2 CS2^ 2-3 VCC 1-2
SW3 GND V0 V0 2-3 V0 2-3 V0 2-3 GND 1-2 V0 2-3
SW4 VDD P32 RST 2-3 RST 2-3 RS 2-3 VDD 1-2 DB0 2-3
SW5 P33 V0 RW 1-2 E1 1-2 RW 1-2 V0 2-3 DB1 1-2
-P34E-E2-E-DI-DB2-
- P90 DB0 - RW - DB0 - RW DB3 -
- P91 DB1 - A0 - DB1 - E DB4 -
- P92 DB2 - DB0 - DB2 - DB0 DB5 -
- P93 DB3 - DB1 - DB3 - DB1 DB6 -
- P94 DB4 - DB2 - DB4 - DB2 DB7 -
- P95 DB5 - DB3 - DB5 - DB3 CS1 -
- P96 DB6 - DB4 - DB6 - DB4 CS2 -

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Any LCD (3.3 or 5 V) which is compatible with this pinout can be used. Software adaptation
for each type of LCD is required.
- P97 DB7 - DB5 - DB7 - DB5 RST -
SW15 A P35 DB6 2-3 DB6 1-2 CS1 2-3 DB6 2-3 RW 2-3
SW16 K P36 DB7 2-3 DB7 1-2 CS2 2-3 DB7 2-3 DI 2-3
SW17 A P37 A 1-2 A 1-2 RST 2-3 RST 2-3 E 2-3
SW18 K Vee K 1-2 K 1-2 Vee 2-3 Vee 2-3 Vee 2-3
- A ----A-A-A-
SW20 - K - - - - K 2-3 K 2-3 K 2-3
SW35 GND Vee GND 1-2 GND 1-2 Vee 2-3 Vee 2-3 Vee 2-3
Table 1. Extension board configuration according to LCD types (continued)
SWITCH POS. CONF. A CONF. B CONF. C CONF. D CONF. E
NAME 1-2 2-3 PIN SW PIN SW PIN SW PIN SW PIN SW
Table 2. Supported displays (provided by ELATEC)
Configuration Displays
CONF. A TEXT: EL0801x, EL0802x, EL1601x, EL1602x,
EL1604x, EL2002x, EL2004x(1)
GRAPHIC: EL16032x
CONF. B GRAPHIC: EL12232A
CONF. C GRAPHIC: EL12864A
CONF. D GRAPHIC: EL12864B
CONF. E GRAPHIC: EL12864H
1. * Not all LCD displays have a 20-pin connector. If these cases, the board should be connected from the left-most pin
(viewed from top). This may leave some pins unconnected, noting that A / K are not obligatory.

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1.4 PCB layout
Figure 4. Top view
Figure 5. Bottom view

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1.5 Bill of materials
Table 3. Bill of materials
Label Package Comment Order code
C01 0603 100 nF Farnell: 422-6859
(X7R, 16 V)
C02 3528_AB_REV2 2.2 µF Farnell: 757-720
(STD, 10 V)
C03 0603 10 nF Farnell: 422-6938
(X7R, 50 V)
CN0 DC10B 5-35 V GM: K375A
CN3 HDR2X10 EXTENDED_CON GM: MLW20G
LCD1 HDR1X20H Header 20H GM: S2G20
D01 SMA2 STPS140A ST: STPS140A
PW1 DPAK LF33/50xDT ST: LF33/50xDT
R1 TrimrPK50 PK50HK005 GM: PK50HK005
R20 TrimrPK50 PK50HE100 GM: PK50HE100
R21 0805 5R
R30-R37
R90-R97 0603 10kΩGM: R0603-10kΩ
SW0-SW5,
SW15-SW18, SW20,
SW35 HDR1X3 - GM: S1G36
(36pins=12*3)

Revision history UM0375
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2 Revision history
Table 4. Document revision history
Date Revision Changes
19-Jan-2007 1 Initial release.
09-Oct-2007 2 Updated order code for CN3 in Table 3: Bill of materials.

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