Grifo SEP 40, Руководство пользователя

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Page 66
SEP 40 Rel. 3.10
THE RECOMMENDED ISP CONNECTOR LAYOUT IN TARGET SYSTEM
This interface corresponds with Atmel application note AVR910: In-System Programming. This
application note is used in every ISP programmer and describes the recommended ISP interface
connector layout in target system (top view in figure 6).
F
IGURE
4: ISP P
INOUT
Specification of ISP connector pins depends on programming device and is displayed at Additional
info window. This specification corespond with application notes publised of device manufacturers.
Note: Pin no. 1 is signed by triangle scratch on ISP cable connectors.
H/L/read SEP 40 driver is shown on figure 7.
Warnings:
- When you use SEP 40 as ISP programmer, don’t insert device to ZIF socket.
- When you programm devices in ZIF sosket, don’t insert ISP cable to ISP connector.
- Use only attached ISP cable. When you use other ISP cable (other material, length…),
programming may occour unreliable.
- SEP 40 can supply target device (target system with limitation), but target system cannot supply
SEP 40.
- SEP 40 apply programming voltage to target device and checks his value (target system can
modify programming voltage). If the programming voltage is different as expected, no action
with target device will be executed.
PIN NAME PURPOSE
SCK Serial Clock
Programming clock, generated by the In-System
programmer (master).
MOSI
Master Out
Slave In
Communication line from In-System programmer
(master) to target MCU being programmed (slave).
MISO
Master In
Slave Out
Communication line from target MCU (slave) to In-
System programmer (master).
RESET
Target MCU
Reset
To enable In-System programming, the target MCU Reset
must be kept active. To simplify this, the In-System
programmer should control the target MCU Reset
Vcc
Target Power
Supply
The target can have power supplied through the In-System
programming connector for the duration of the
programming cycle. Target system cannot supply SEP 40.
GND
Common
Ground
The two systems must share the same common ground.