参数资料
型号: 848A
厂商: B&K Precision
文件页数: 131/137页
文件大小: 0K
描述: MEMORY PROGRAMMER PARALLEL INTER
标准包装: 1
类型: 通用
适用于相关产品: EPROM、EEPROM 闪存、串行 EPROM、微控制器和 PLD
所含物品: 编程器、适配器、缆线、手册和软件
? If your target board supply differs from mentioned 5V, choose please the Zener diode (D1)
voltage according to this supply voltage.
? We recommend to use resistors R1, R2, (R3) to separate the target device from target
system. If pins needed for ISP 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.
Example of application note
Microcontrollers Atmel AVR and AT89Sxxx series
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).
B+K PRECISION’s recommended circuit for ATMEL AVR:
ISP connector
target device
target system
DATA IN
DATA OUT
SCK
RESET
target VCC check only
VCC
GND
D2
1N4148
GND
C1
22n
VCC
R11
100k
C2
1u/10V
GND
MOSI
MISO
SCK
RESET
GND
GND
I1
ATMEL AVR
GND
R1
R2
R3
reset circuit
B+K PRECISION’s recommended circuit for AT89Sxxx:
ISP connector
target device
target system
DATA IN
DATA OUT
SCK
RST
target VCC check only
VCC
GND
C1
C2
1u/10V
GND
22n
VCC
R11
100k
D2
1N4148
RST
MOSI
MISO
SCK
I1
AT89Sxxx
R1
R2
R3
GND
GND GND
reset circuit
131
GND
GND
相关PDF资料
PDF描述
85506-0001 CONN MOD JACK VERT 8-8 HI-SPEED
85507-0001 CONN MOD JACK VERT 8-8 SHIELDED
85508-0001 CONN MOD JACK VERT 8-8 SHIELDED
85508-5001 CONN MOD JACK 8POS T/H HI SPEED
85511-0001 CONN MOD JACK VERT 8-8 HI-SPEED
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