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Part Name
Description
AT89S8252 View Datasheet(PDF) - Unspecified
Part Name
Description
Manufacturer
AT89S8252
State-of-the Art Evaluation Module for 8, 20 & 40-pin Microcontrollers
Unspecified
AT89S8252 Datasheet PDF : 26 Pages
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Next
Last
Evalu8r
User Manual V2.00
Device Support
Continued
Atmel 40-pin 8051 microcontrollers
Device
Family
Microcontroller Number
RESET Configuration
Socket
Of Pins Polarity Link 3 Link 4
ISP
EA
HIGH
AT89C51
U2
AT89C52
U2
AT89C55
U2
AT89S8252
U2
AT89S53
U2
40
HIGH
1-2
1-2
NO CON 10
1-2
40
HIGH
1-2
1-2
NO CON 10
1-2
40
HIGH
1-2
1-2
NO CON 10
1-2
40
HIGH
1-2
1-2
YES CON 10
1-2
40
HIGH
1-2
1-2
YES CON 10
1-2
Figure 8
Active
HIGH RESET
Circuit
(Refer to page 12)
External
RESET
Signal
XT1
C1
C2
Vcc
C6
1
RESET
40
Vcc
AT89CXX
AT89SXXXX
40-Pin
Microcontroller
31
EA
P0
P1
18
XTAL1
P2
19
XTAL2
P3
GND
20
Figure 10
CON 10
1-2
(T2) P1.0
1
(T2 EX) P1.1
2
P1.2
3
P1.3
4
(SS) P1.4
5
(MOSI) P1.5
6
(MISO) P1.6
7
(SCK) P1.7
8
RST
9
(RXD) P3.0
10
(TXD) P3.1
11
(INT0) P3.2
12
(INT1) P3.3
13
(T0) P3.4
14
(T1) P3.5
15
(WR) P3.6
16
(RD) P3.7
17
XTAL2
18
XTAL1
19
GND
20
40
VCC
39
P0.0 (AD0)
38
P0.1 (AD1)
37
P0.2 (AD2)
36
P0.3(AD3)
35
P0.4 (AD4)
34
P0.5 (AD5)
33
P0.6 (AD6)
32
P0.7 (AD7)
31
EA/VPP
30
ALE/PROG
29
PSEN
28
P2.7 (A15)
27
P2.6 (A14)
26
P2.5 (A13)
25
P2.4 (A12)
24
P2.3 (A11)
23
P2.2 (A10)
22
P2.1 (A9)
21
P2.0 (A8)
Pinout for the AT89S8252
Figure 9
Port I/O
P0.X 8
P1.X 8
P2.X 8
P3.X 8
6
Function
I/O Box Header (Con 11)
LED x 8 + ISP (3)
I/O Box Header (Con 9)
Push Button + Serial Communications
Figure 11
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