June 1, 2004
Document No. 38-12019 Rev. *B
11
CY8C27x66 Preliminary Data Sheet
1. Pin Information
Table 1-4. 48-Pin Part Pinout (MLF*)
Pin
No.
Type
Pin
Name
Description
CY8C27666 48-Pin PSoC Device
Digital
Analog
1
IO
I
P2[3]
Direct switched capacitor block input.
2
IO
I
P2[1]
Direct switched capacitor block input.
3
IO
P4[7]
4
IO
P4[5]
5
IO
P4[3]
6
IO
P4[1]
7
Power
SMP
Switch Mode Pump (SMP) connection to
external components required.
8
IO
P3[7]
9
IO
P3[5]
10
IO
P3[3]
11
IO
P3[1]
12
IO
P5[3]
13
IO
P5[1]
14
IO
P1[7]
I2C Serial Clock (SCL)
15
IO
P1[5]
I2C Serial Data (SDA)
16
IO
P1[3]
17
IO
P1[1]
Crystal (XTALin), I2C Serial Clock (SCL)
18
Power
Vss
Ground connection.
19
IO
P1[0]
Crystal (XTALout), I2C Serial Data (SDA)
20
IO
P1[2]
21
IO
P1[4]
Optional External Clock Input (EXTCLK)
22
IO
P1[6]
23
IO
P5[0]
24
IO
P5[2]
25
IO
P3[0]
26
IO
P3[2]
27
IO
P3[4]
28
IO
P3[6]
29
Input
XRES
Active high pin reset with internal pull down.
30
IO
P4[0]
31
IO
P4[2]
32
IO
P4[4]
33
IO
P4[6]
34
IO
I
P2[0]
Direct switched capacitor block input.
35
IO
I
P2[2]
Direct switched capacitor block input.
36
IO
P2[4]
External Analog Ground (AGND)
37
IO
P2[6]
External Voltage Reference (VREF)
38
IO
I
P0[0]
Analog column mux input.
39
IO
IO
P0[2]
Analog column mux input and column output.
40
IO
IO
P0[4]
Analog column mux input and column output.
41
IO
I
P0[6]
Analog column mux input.
42
Power
Vdd
Supply voltage.
43
IO
I
P0[7]
Analog column mux input.
44
IO
IO
P0[5]
Analog column mux input and column output.
45
IO
IO
P0[3]
Analog column mux input and column output.
46
IO
I
P0[1]
Analog column mux input.
47
IO
P2[7]
48
IO
P2[5]
LEGEND: A = Analog, I = Input, and O = Output.
* The MLF package has a center pad that must be connected to the ground (Vss).
MLF
(Top View)
10
11
12
AI, P2[3]
AI, P2[1]
P4[7]
P4[5]
P4[3]
P4[1]
SMP
P3[7]
P3[5]
P3[3]
P3[1]
P5[3]
35
34
33
32
31
30
29
28
27
26
25
36
P2[2], AI
P2[0], AI
P4[6]
P4[4]
P4[2]
P4[0]
XRES
P3[6]
P3[4]
P3[2]
P3[0]
P2[4], External AGND
1
2
3
4
5
6
7
8
9
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