User manual

CY8C24223A, CY8C24423A
Document Number: 38-12029 Rev. *H Page 10 of 34
28-Pin Part Pinout
Table 4. 28-Pin Part Pinout (SSOP)
Pin
No.
Type
Pin
Name
Description
Figure 4. CY8C24423A 28-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 I/O P2[7]
6 I/O P2[5]
7 I/O I P2[3] Direct switched capacitor block input
8 I/O I P2[1] Direct switched capacitor block input
9 Power Vss Ground connection
10 I/O P1[7] I
2
C Serial Clock (SCL)
11 I/O P1[5] I
2
C Serial Data (SDA)
12 I/O P1[3]
13 I/O P1[1] Crystal Input (XTALin), I
2
C Serial Clock
(SCL), ISSP-SCLK
[5]
14 Power Vss Ground connection
15 I/O P1[0] Crystal Output (XTALout), I
2
C Serial Data
(SDA), ISSP-SDATA
[5]
16 I/O P1[2]
17 I/O P1[4] Optional External Clock Input (EXTCLK)
18 I/O P1[6]
19 Input XRES Active high external reset with internal
pull down
20 I/O I P2[0] Direct switched capacitor block input
21 I/O I P2[2] Direct switched capacitor block input
22 I/O P2[4] External Analog Ground (AGND)
23 I/O P2[6] External Voltage Reference (VRef)
24 I/O I P0[0] Analog column mux input
25 I/O I P0[2] Analog column mux input
26 I/O I P0[4] Analog column mux input
27 I/O I P0[6] Analog column mux input
28 Power Vdd Supply voltage
LEGEND: A = Analog, I = Input, and O = Output.
SSOP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
AI, P0[7]
AIO, P0[5]
AIO, P0[3]
AI, P0[1]
P2[7]
P2[5]
AI, P2[3]
AI, P2[1]
Vss
I2C SCL, P1[7]
I2C SDA, P1[5]
P1[3]
I2C SCL, XTALin, P1[1]
Vss
Vdd
P0[6], AI
P0[4], AI
P0[2], AI
P0[0], AI
P2[6], External VRef
P2[4], External AGND
P2[2], AI
P2[0], AI
XRES
P1[6]
P1[4], EXTCLK
P1[2]
P1[0], XTALout, I2C SDA
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