CY8C27143, CY8C27243
CY8C27443, CY8C27543, CY8C27643
Table 7. 48-Pin Part Pinout (SSOP)
43
44
45
46
47
48
IO
IO
IO
IO
IO
I
IO
IO
I
P2[6]
P0[0]
P0[2]
P0[4]
P0[6]
Vdd
Power
External Voltage Reference (VRef).
Analog column mux input.
Analog column mux input and
column output.
Analog column mux input and
column output.
Analog column mux input.
Supply voltage.
LEGEND:
A = Analog, I = Input, and O = Output.
* These are the ISSP pins, which are not High Z at POR (Power On Reset). See the
PSoC Mixed-Signal Array Technical Reference Manual
for details.
Table 8. 48-Pin Part Pinout (QFN)*
Pi
Type
n
No Digital Ana-
log
.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
Input
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
Power
IO
IO
IO
IO
IO
IO
Power
I
I
Pin
Name
P2[3]
P2[1]
P4[7]
P4[5]
P4[3]
P4[1]
SMP
P3[7]
P3[5]
P3[3]
P3[1]
P5[3]
P5[1]
P1[7]
P1[5]
P1[3]
P1[1]
Vss
P1[0]
P1[2]
P1[4]
P1[6]
P5[0]
P5[2]
P3[0]
P3[2]
P3[4]
P3[6]
XRES
P4[0]
P4[2]
P4[4]
P4[6]
Active high external reset with internal
pull down.
Optional External Clock Input (EXTCLK).
Crystal Input (XTALin), I2C Serial Clock
(SCL), ISSP-SCLK**.
Ground connection.
Crystal Output (XTALout), I2C Serial
Data (SDA), ISSP-SDATA**.
I2C Serial Clock (SCL).
I2C Serial Data (SDA).
Switch Mode Pump (SMP) connection to
external components required.
A, I, P2[3]
A, I, P2[1]
P4[7]
P4[5]
P4[3]
P4[1]
SMP
P3[7]
P3[5]
P3[3]
P3[1]
P5[3]
Figure 8. CY8C27643 48-Pin PSoC Device
Description
Direct switched capacitor block input.
P2[5]
P2[7]
P0[1], A,I
P0[3], A,IO
P0[5], A,IO
P0[7], A,I
Vdd
P0[6], A,I
P0[4], A,IO
P0[2], A,IO
P0[0], A,I
P2[6],ExternalVRef
36
35
34
33
32
31
30
29
28
27
26
25
P2[4],External AGND
P2[2], A, I
P2[0], A, I
P4[6]
P4[4]
P4[2]
P4[0]
XRES
P3[6]
P3[4]
P3[2]
P3[0]
Direct switched capacitor block input.
Document Number: 38-12012 Rev. *M
13
14
I2CSDA,P1[5] 15
P1[3] 16
I2CSCL,XTALin,P1[1] 17
Vss 18
I2CSDA,XTALout,P1[0] 19
P1[2] 20
EXTCLK,P1[4] 21
P1[6] 22
P5[0] 23
P5[2] 24
1
2
3
4
5
6
7
8
9
10
11
12
P5[1]
I2CSCL,P1[7]
48
47
46
45
44
43
42
41
40
39
38
37
QFN
(Top View )
Page 12 of 53
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