W79E648 Datasheet, PDF (73/80 Pages) Winbond – Fast 8051 Compatible microcontroller with a redesigned Processor

Preliminary W79E648
Typical Application Circuits, continued
Expanded External Data Memory and Oscillator
V CC
V _CC
10 u ^OSCILLATOR
8.2 K
31
EA
19 _XTAL1
18 _XTAL2
9 _RST
12 ^INT0
13 _INT1
14 _T0
15 _T1
1
2
3
4
P1.0
P1.1
P1.2
P1.3
5
6
P1.4
P1.5
7
8
P1.6
P1.7
P0.0 39 AD0
P0.1 38 AD1
P0.2 37 AD2
AD0 3 _{D0 Q0} 2 A0 A0 10 _A0
AD1 4 _{D1 Q1} 5 A1 A1 9 A1
AD2 7 _{D2 Q2} 6 A2 A2 8 A2
D0 ^{11 AD0}
D1 ^{12 AD1}
D2 ^{13 AD2}
P0.3 36 AD3
P0.4 ₃₅ AD4
AD3 8 _{D3 Q3} 9 A3 A3 7 A3
AD4 13 D4 Q4 12 A4 ^A4 6 A4
D3 ^{15 AD3}
D4 ^{16 AD4}
P0.5 34 AD5
AD5 14 D5 Q5 15 A5 A5 5 A5
D5 ^{17 AD5}
P0.6 33 AD6
P0.7 32 AD7
AD6 17 D6 Q6 16 A6 A6 4 A6
AD7 18 D7 Q7 19 A7 A7 3 A7
D6 ^{18 AD6}
D7 ^{19 AD7}
P2.0 21 A8
GND 1 _OC
A8 25 A8
A9 24 A9
P2.1 22 A9
P2.2 23 _A10
P2.3 24 _A11
P2.4 25 A12
P2.5 26 A13
P2.6 27 _A14
P2.7 28
11 _G
74F373
A10 21 _A10
A11 23 _A11
A12 2 _A12
A13 26 _A13
A14 1 _A14
GND ₂₀ CE
RD ₁₇
WR 16
22 OE
27 _WR
PSEN
ALE
29
30
TXD
RXD
11
10
20256
19. PACKAGE DIMENSIONS
Figure B
- 73 -
Publication Release Date: 05/31/2004
Revision A1