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CY8C23433, CY8C23533
Document Number: 001-44369 Rev. *B Page 9 of 37
28-Pin Part Pinout
Table 4. Pin Definitions - 28-Pin (SSOP)
Pin Number
CY8C23433
Digital
Analog
Pin Name
Description
Figure 6. CY8C23433 28-Pin PSoC Device
1 IO I P0[7] Analog Column Mux IP and ADC IP
2 IO IO P0[5] Analog Column Mux IP and Column
O/P and ADC IP
3 IO IO P0[3] Analog Column Mux IP and Column
O/P and ADC IP
4 IO I P0[1] Analog Column Mux IP and ADC IP
5 IO P2[7] GPIO
6 IO P2[5] GPIO
7 IO I P2[3] Direct Switched Capacitor Input
8 IO I P2[1] Direct Switched Capacitor Input
9IOAVref
P3[0]
[5]
GPIO/ADC Vref (optional)
10 IO P1[7] I2C SCL
11 IO P1[5] I2C SDA
12 IO P1[3] GPIO
13 IO
P1[1]
[6]
GPIO, Xtal Input, I2C SCL, ISSP SCL
14 Power Vss Ground Pin
15 IO
P1[0]
[6]
GPIO, Xtal Output, I2C SDA, ISSP
SDA
16 IO P1[2] GPIO
17 IO P1[4] GPIO, External Clock IP
18 IO P1[6] GPIO
19 IO
P3[1]
[7]
GPIO
20 IO I P2[0] Direct Switched Capacitor Input
21 IO I P2[2] Direct Switched Capacitor Input
22 IO P2[4] External Analog Ground (AGnd)
23 IO P2[6] Analog Voltage Reference (VRef)
24 IO I P0[0] Analog Column Mux IP and ADC IP
25 IO I P0[2] Analog Column Mux IP and ADC IP
26 IO I P0[4] Analog Column Mux IP and ADC IP
27 IO I P0[6] Analog Column Mux IP and ADC IP
28 Power Vdd Supply Voltage
LEGEND: A = Analog, I = Input, and O = Output.
AIO, P0[7]
IO, P0[5]
IO, P0[3]
AIO, P0[1]
IO, P2[7]
IO, P2[5]
AIO, P2[3]
AIO, P2[1]
AVref, IO, P3[0]
I2C SCL, IO, P1[7]
I2C SDA, IO, P1[5]
IO, P1[3]
I2C SCL,ISSP SCL,XTALin,IO, P1[1]
Vss
Vdd
P0[6], AIO, AnColMux and ADC IP
P0[4], AIO, AnColMux and ADC IP
P0[2], AIO, AnColMux and ADC IP
P0[0], AIO, AnColMux and ADC IP
P2[6], VREF
P2[4], AGND
P2[2], AIO
P2[0], AIO
P3[1], IO
P1[6], IO
P1[4], IO, EXTCLK
P1[2], IO
P1[0],IO,XTALout,ISSP SDA,I2C SDA
SSOP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Notes
5. Even though P3[0] is an odd port, it resides on the left side of the pinout.
6. ISSP pin, which is not High Z at POR.
7. Even though P3[1] is an even port, it resides on the right side of the pinout.
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