PRODUCT DATA SHEET

AD71

Package Converters for 87C51 Family (QFP44)

Product Code	Pins on skt	Pins on Base	Wiring Code	Package	Base pitch"	Miscellaneous
AD71	44	40	01	Q	.6	Clamshell

For use on the following programmers

Any programmer capable of programming 40 pin DIL version of same 8751 family device

Device types

Note: The QFP versions of this family of devices are manufactured in several similar packages, which differ slightly in the critical dimensions required in a ZIF socket. Please check the dimensions shown below carefully against the data sheet for the device you wish to program. For further similar devices see also AD525, AD526 and AD552

Philips Components (Signetics) SOT 307-2
- 87C51, 87C51FA, 87C51FB, 87C51FC, 87L51FB, 87C52, 87C51B, 87C54, 87C524, 87C528, 87C575, 87C576, 87C652, 87C654 (BUT NOT 87C542 OR 87C550), 89C51RA+, 89C51RB+, 89C51RC+, 89C51RD+

Device package: 44 pin QFP

Note: There are various different packages for 87C51 family parts referred to as QFP. Please check that you have the correct variant. AD71 is intended for packages with the following dimensions:

Pin tip to tip 12.6 mm
Pitch 0.8 mm
Bend 11.7 mm
Body width 10 mm

Programmer socket: 40 pin DIL

Socket Specification:

Insertions: 5000

Replaceable: No

General: This range of package converters is manufactured in England to the highest standards by MQP Electronics. Every adapter sold is tested using an actual device. Our distributors should have no difficulty in supplying you quickly with any item. Specifications of our adapters can be found on our Web Site (www.mqp.com)

If you have any difficulty in identifying the correct converter our sales office will be pleased to advise. Our phone number is +44 1666 825 666.

Connections:

44 Pin QFP Socket	Signal Name	40 Pin DIL BASE	Comments
1	P1.5	6
2	P1.6	7
3	P1.7	8
4	RST	9
5	P3.0	10
6	nc	-	Link A: VSS / Link B: VCC
7	P3.1	11
8	P3.2	12
9	P3.3	13
10	P3.4	14
11	P3.5	15
12	P3.6	16
13	P3.7	17
14	XTAL2	18
15	XTAL1	19
16	VSS	20
17	nc	-	Link E: VSS / Link F: VCC
18	P2.0	21
19	P2.1	22
20	P2.2	23
21	P2.3	24
22	P2.4	25
23	P2.5	26
24	P2.6	27
25	P2.7	28
26	\PSEN	29
27	ALE	30
28	nc	-	Link G: VSS / Link H: VCC
29	\EA	31
30	P0.7	32
31	P0.6	33
32	P0.5	34
33	P0.4	35
34	P0.3	36
35	P0.2	37
36	P0.1	38
37	P0.0	39
38	VCC	40
39	nc / VSS1	-	Link C: VSS / Link D: VCC
40	P1.0	1
41	P1.1	2
42	P1.2	3
43	P1.3	4
44	P1.4	5

Links and capacitors need not normally be modified but the following information is provided to assist our customers in special technical situations:

A capacitor (eg 10nF) is normally fitted to bypass VPP supply.
A capacitor (eg 10nF) is normally fitted to bypass VCC supply.
Links A through H are available for devices requiring them; they are normally not made.

Other References

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