
Document Number: 001-52469 Rev. *H Page 8 of 50
Pinouts
The automotive CY8C24x23A PSoC device is available in a variety of packages which are listed and illustrated in the following tables.
Every port pin (labeled with a “P”) is capable of digital I/O. However, V
SS
, V
DD
, and XRES are not capable of digital I/O.
20-Pin Part Pinout
Note
5. These are the ISSP pins, which are not high Z when coming out of POR. See the PSoC Technical Reference Manual for details.
Table 2. 20-Pin Part Pinout (Shrink Small-Outline Package (SSOP))
Pin
No.
Type
Pin
Name
Description
Figure 3. CY8C24223A 20-Pin PSoC Device
Digital Analog
1 I/O I P0[7] Analog column mux input
2 I/O I/O P0[5] Analog column mux input and column
output
3 I/O I/O P0[3] Analog column mux input and column
output
4 I/O I P0[1] Analog column mux input
5 Power V
SS
Ground connection
6 I/O P1[7] I
2
C serial clock (SCL)
7 I/O P1[5] I
2
C serial data (SDA)
8 I/O P1[3]
9 I/O P1[1] Crystal input (XTALin), I
2
C serial clock
(SCL), ISSP-SCLK
[5]
10 Power V
SS
Ground connection
11 I/O P1[0] Crystal output (XTALout), I
2
C serial data
(SDA), ISSP-SDATA
[5]
12 I/O P1[2]
13 I/O P1[4] Optional external clock input (EXTCLK)
14 I/O P1[6]
15 Input XRES Active high external reset with internal pull
down
16 I/O I P0[0] Analog column mux input
17 I/O I P0[2] Analog column mux input
18 I/O I P0[4] Analog column mux input
19 I/O I P0[6] Analog column mux input
20 Power V
DD
Supply voltage
LEGEND: A = Analog, I = Input, and O = Output.
SSOP
1
AI, P0[7]
AIO, P0[5]
AIO, P0[3]
AI, P0[1]
I2C SCL, P1[7]
I2C SDA, P1[5]
P1[3]
I2C SCL, XTALin, P1[1]
V
SS
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
DD
P0[6], AI
P0[4], AI
P0[2], AI
P0[0], AI
XRES
P1[6]
P1[4], EXTCLK
P1[2]
P1[0], XTALout, I2C SDA
V
SS
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