866 B&K Precision, 866 Datasheet - Page 154

• Manufacturer Part Number: 866
• Description: PROGRAMMER UNIV W/ USB INTERFACE
• Manufacturer: B&K Precision
• Type: Universalr

Specifications of 866

• Contents: Programmer, Adapter, Cable, Manual and Software
• For Use With/related Products: EPROM, EEPROM-Flash, Serial EPROM, Microcontroller & PLD
• Other names: 866BK; Q2005647

Example of application note
Microcontrollers Atmel AVR and AT89Sxxx series
This application note is used in 849. This interface corresponds
with Atmel application note AVR910: In-System Programming.
This application note describes the recommended ISP
interface connector layout in target system (top view).
Description of required pins for in-system programming
by AVR910.
Pin
SCK
MOSI
MISO
GND
RESET Target MCU Reset
Vcc
programming are inputs in target system then separation
by resistors is sufficient and resistors make a low pass filter
too. If pins are outputs, then use of resistors saves a
programming time. Of course the isolation resistors R1, R2,
(R3) can be replaced by switches or jumpers, if necessary.
In that case, during the ISP programming of target device
the switches (jumpers) must be open. But the using of
switches (jumpers) adds a next manipulation time to
programming procedure.
Name
Serial Clock
Master Out – Slave In Communication line from In-System
Master In – Slave Out Communication line from target MCU
Target Power
Common Ground
MISO
SCK
RESET
3
5
1
154
2
4
6
Comment
Programming clock, generated by the In-
System programmer (master).
programmer (master) to target MCU
being programmed (slave).
(slave) to In-System programmer
(master).
The two systems must share the same
common ground.
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
To allow simple programming of targets
operating at any voltage, the In-System
programmer can draw power from the
target. Alternatively, the target can have
power supplied through the In-System
programming connector for the duration
of the programming cycle
MOSI
GND
Vcc