Documentation PMIP Programmer, - controling by the Port COM.

This text is addressed to those who are interested in electronics, and who would like to set up such a gadget by himself. The placed technical information, needed to produce it, is completely gratis on condition that it will be used only for own needs and it will not to be used commercial activity.

You can take then placed illustrations in then greater precise by ONclick on illustration.

The general description

The PMIP programmer is the enlargement of the PMIN programmer. It is used in service, programming of programmatic memory of microprocessors or/and controlling other systems to be programmed. This electronic gadget is equiped with the microprocessor's system AT89C52. The controlling is realized by means of the transmission RS232. The programmer has more possibilities than PMIN. He has at his disposal the following voltages: 5V/6.5V, 12V/12.75V. Dimensions of the plate are identical as for PMIN. The PMIP programmer serves the same adapters as PMIN.

(13 KB)

To feed the programmer you can use every typical feeder 12V minimum 0,5A. The feeder may be stabilized, non-stabilized, and may give too the alternating voltage. The voltage of the feeder would be in the bounds of 10V to 15V. The polarization in the line connecting feeder with PMIP is of no importance - notice concerning the case of the feeder giving the constant voltage. On the side of feeder's socket there is the socket 9 pin (FEMALE), to which you connect cable-extension (nonsplit). On the other side the programmer is equiped with the socket 25 pin (FEMALE). This socket serves to connect (insert) Adapters. Adapters can contain different kinds of stands: DIP, SOIC, PLCC and different quantity of leading out, according to needs or assignment.

Transmitted signals to / of Adapters
Voltage signals		Logical signals
GND	mass	Vi	IN/OUT: eight signals CMOS, (i=0,...,7)
+5V	OUT: 5V constans voltage 200 mA max	Xi	IN/OUT: five signals CMOS, (i=0,...,4)
H5L	OUT: 0V/50mA, U5, 12V/5mA, 12.75V/5mA	Di	IN/OUT: eight signals CMOS, (i=0,...,7)
U5	OUT: 0V/CMOS, 5V/100mA, 6.5V/100mA
Attentions on theme of voltage Vpp
Current Ipp, - only for voltage of programming Vpp=12V or Vpp=12.75V (in signal H5L) depends from producer of integrated circuit and from technology his realizations. In records of firm Atmel, for microprocessors of series x89, maximum current Ipp is given as value <= 1mA. In records other firms, maximum current Ipp is given as value 50mA, 75mA. And in many records generally is not given at all. In some records is possible meet even attention: "that was not this tested". In converter DCDC (MC34063) converting 5V on 12V or 12.75V, to enlarge efficiency current for exit voltage 12V or 12.75V, one should use suitable choking-coil (on schema choking-coil 56uH). In presented solution one used miniature choking-coil. Passive resistance such of miniature choking-coil carries out about 1.5 Ohm. If will come into being it is necessary possessions of signal Vpp about greater current, one should use choking-coil 40uH to 60uH but about smaller passive resistances. That means that choking-coil should be wound thicker wire. In dependences from passive resistances choking-coil, one should choose resistor (on schema: 1.5 Ohm) so that sum this resistor and passive resistances choking-coil leveled 3 Ohm. Computational Details - look specification for MC34063. In presented electric schema, at use suitable choking-coil, obtainment of current efficiency to 100mA in consecutive manner for 12V or 12.75V - not state greater problem.

In the gatget there were applied
ICs		Transistors (or equivalents)
HEF4066	2 pieces	BC238	2 pieces
MC34063	2 pieces	BC237	2 pieces
7805	1 piece	BC307	1 piece
MAX232	1 piece	Quartz
AT89C52	1 piece, microprocessor	11.059MHz	1 piece
Diodes		elements induction
GRAETZ	1 piece, 1.5A/50V	22uH	4 pieces, miniatures
schotky	2 pieces version SMD 1A/50V	100uH	1 piece, typical in circuits of feeding
LED	2 pieces, 5mm, red and green	56uH	2 pieces
Resistors		Resistors
1 Ohm	1 piece	3.6K	1 piece
1.5 Ohm	1 piece	4.7K	2 pieces
100 Ohm	1 piece	6.8K	1 piece
560 Ohm	3 piece	10K	4 pieces
1K	4 pieces	22K	3 pieces
2.2K	1 piece	P470 Ohm	2 pieces, standing, precise regulation from top.
P4.7K	1 piece, standing, precise regulation from top.	P10K	1 piece, standing, precise regulation from top.
Condensers		Condensers electrolytic
33pF	2 pieces	1uF	5 pieces, /16V
100pF	2 pieces	100uF	1 piece, /25V
470pF	2 pieces	100uF	3 pieces, /16V
2.2nF	4 pieces	100uF	2 pieces, /40V
100nF	1 piece	470uF	1 piece, /16V
		470uF	1 piece, /25V
Sockets		Sockets
1 piece, typical feeder's socket for 5 to 24V, connector 6 mm		1 piece, 25 pin FEMALE
		1 piece, 9 pin FEMALE

electrical scheme	printed plate	arrangement of elements

52 KB	77 KB	53 KB