80C251SB16 Datasheet, PDF (6/36 Pages) Intel Corporation – HIGH-PERFORMANCE CHMOS MICROCONTROLLER

8XC251SA/SB/SP/SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
2.0 PINOUT
P1.5 / CEX2
P1.6 / CEX3 / WAIT#
P1.7 / CEX4 / A17 / WCLK
RST
P3.0 / RXD
V_CC2
P3.1 / TXD
P3.2 / INT0#
P3.3 / INT1#
P3.4 / T0
P3.5 / T1
7
39
8
8XC251SA
38
9
10
8XC251SB
37
36
11
8XC251SP
35
12
8XC251SQ
34
13
33
14
32
15 View of component as 31
16 mounted on PC board 30
17
29
AD4 / P0.4
AD5 / P0.5
AD6 / P0.6
AD7 / P0.7
EA# /
V_SS2
V_PP
ALE / PROG#
PSEN#
A15 / P2.7
A14 / P2.6
A13 / P2.5
Figure 3. 8XC251SA/SB/SP/SQ 44-pin PLCC Package
A4205-02
6
PRELIMINARY