W921E840A Datasheet, PDF (8/58 Pages) Winbond – 4-BIT MICROCONTROLLER

Continued
PIN NAME
P4.0
P4.1
P4.2
P4.3/INT0
P5.0/TM1
P5.1/TM2
P5.2/VREF
NC
NC
P5.3/DAOUT
P6.0/WDATA
P6.1/WCLK
P6.2/RDATA
VSS
P6.3/RCLK
PA.0
PA.1
PA.2
PA.3
NC
QFP 48
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
W921E840A/W921C840
PIN NAME
BTG
PC.0
PC.1
PC.2
PC.3
DTMF
PD.0
PD.1
NC
XT
XT
RESET
OSCO
OSCI
VDD
P2.0
P2.1
P2.2
P2.3
P3.0/ANI0
QFP 48
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
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