W79E225A_08 Datasheet, PDF (9/203 Pages) Winbond – 8-bit Microcontroller

Preliminary W79E225A/226A/227A Data Sheet
MISO, AD0, P0.0
MOSI, AD1, P0.1
SPCLK, AD2, P0.2
SS, AD3, P0.3
INT2, AD4, P0.4
INT3, AD5, P0.5
INT4, AD6, P0.6
INT5, AD7, P0.7
XTAL1
XTAL2
VSS
6 5 4 3 2 1 44 43 42 41 40
7
39
8
38
9
37
10
W79E225
36
11
W79E226
35
12
W79E227
34
13
33
(PLCC 44-Pin)
14
32
15
31
16
30
17
29
18 19 20 21 22 23 24 25 26 27 28
P4.1, T2EX, IC2, INDX
P3.0, RXD
P3.1, TXD
P3.2, INT0
P3.3, INT1
P3.4, T0, IC0, QEA
P3.5, T1, IC1, QEB
P3.6, WR
P3.7, RD
EA
VDD
Publication Release Date: April 15, 2008
-9-
Revision A4.0