User manual
CY8C24223A, CY8C24423A
Document Number: 38-12029 Rev. *H Page 9 of 34
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, Vss, Vdd, and XRES are not capable of Digital I/O.
20-Pin Part Pinout
Table 3. 20-Pin Part Pinout (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 Vss 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 Vss 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 Vdd Supply voltage
LEGEND: A = Analog, I = Input, and O = Output.
SSOP
2
1
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Vdd
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
AI, P0[7]
AIO, P0[5]
AIO, P0[3]
AI, P0[1]
Vss
I2C SCL, P1[7]
I2C SDA, P1[5]
P1[3]
I2C SCL, XTALin, P1[1]
Vss
Note
5. These are the ISSP pins, which are not High Z when coming out of POR (Power On Reset). See the PSoC Technical Reference Manual for details.
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