ATSTK526 Atmel, ATSTK526 Datasheet - Page 15

• Manufacturer Part Number: ATSTK526
• Description: KIT STARTER FOR AT90USB82/162
• Manufacturer: Atmel
• Series: AVR®r
• Type: MCUr

Specifications of ATSTK526

• Contents: Starter Kit Board, Power Supply, Cable and Software
• Processor To Be Evaluated: AT90USB82/162
• Data Bus Width: 8 bit
• Interface Type: RS-232, USB
• Silicon Manufacturer: Atmel
• Core Architecture: AVR
• Silicon Core Number: AT90USB82, AT90USB162
• Kit Contents: Board Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT90USB162, AT90USB82
• For Use With: ATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7709B–AVR–07/08
Using the STK526
2-14
The STK526 USART implementation allows an optional hardware flow control that can
be enabled thanks to SP2, SP3, SP4, SP5 solder pads.
Figure 2-13 . USART Schematic
Note that the USART peripheral of the AT90USB82/162 includes an automatic
Hardware Flow Control feature that makes the operation transparent for the user.
Table 2-3 . UART Settings
Note:
Figure 2-14 . RS232 Solder Pad Location
PD[7..0]
Hardware Flow Control
1. Tx reference: STK526 source, Rx reference: STK526 destination
(default configuration)
Software Data Flow
Optional
Control
Mode
PD2
PD3
PD7
PD6
SP4
SP5
C9
100nF
C10
100nF
RxD
T XD
CT S
RT S
SP4
SP4
SP5
SP5
12
11
10
1
3
4
5
9
U3
C1+
C1-
C2+
C2-
.
.
.
.
TTL
VCC
SP3
SP3
GND
VCC
RS 232
V+
V-
MAX3232
.
.
.
.
Configuration
Solder Pads
RS232 BUFFER
SP2
SP2: close
SP3: close
SP4: close
SP5: close
SP2: open
SP3: open
SP4: open
SP5: open
SP2
2
6
13
14
7
8
100nF
C12
RS-T xD
RS-CT S
RS-RT S
RS-RxD
100nF
STK526 rev. B Hardware User Guide
C11
DECOUPLING CAPACITOR
CLOSE TO THE DEVICE
SP3
SP2
VCC
1
6
2
7
3
8
4
9
5
Connection
P1
SUB-D9 FEMALE
RS232
CTS
RTS
C13
100nF
Rx
Rx
Tx
Tx
DB9
Pin 2
Pin 3
Pin 2
Pin 3
Pin 7
Pin 8
11
10
(1)