
CY8C21634/CY8C21534
CY8C21434/CY8C21334/CY8C21234
Document Number: 38-12025 Rev. *Q Page 13 of 45
56-Pin Part Pinout
The 56-pin SSOP part is for the CY8C21001 On-Chip Debug (OCD) PSoC device.
Note This part is only used for in-circuit debugging. It is NOT available for production.
Figure 10. CY8C21001 56-Pin PSoC Device
Table 7. Pin Definitions - CY8C21001 56-Pin (SSOP)
Pin No.
Type
Pin Name Description
Digital Analog
1 Power Vss Ground connection.
2 I/O I P0[7] Analog column mux input.
3 I/O I P0[5] Analog column mux input and column output.
4 I/O I P0[3] Analog column mux input and column output.
5 I/O I P0[1] Analog column mux input.
6 I/O P2[7]
7 I/O P2[5]
8 I/O I P2[3] Direct switched capacitor block input.
9 I/O I P2[1] Direct switched capacitor block input.
10 NC No connection.
11 NC No connection.
12 NC No connection.
13 NC No connection.
14 OCD OCDE OCD even data I/O.
15 OCD OCDO OCD odd data output.
16 Power SMP Switch Mode Pump (SMP) connection to required external components.
17 Power Vss Ground connection.
18 Power Vss Ground connection.
SSOP
1
56 Vdd
2
AI, P0[7]
55
P0[6], AI
3
AI, P0[5]
54
P0[4], AI
4
AI, P0[3]
53
P0[2], AI
5
AI, P0[1]
52
P0[0], AI
6
P2[7]
51
P2[6]
7
P2[5]
50
P2[4]
8
P2[3]
49
P2[2]
9P2[1] 48
P2[0]
10
NC
47
NC
11
NC
46
NC
12NC 45 P3[2]
13
NC
44
P3[0]
14OCDE 43
CCLK
15
OCDO
42
HCLK
16
SMP
41
XRES
17
Vss
40
NC
18
Vss
39
NC
19
P3[3]
38
NC
20
P3[1]
37
NC
21
NC
36
NC
22
NC
35
NC
23I2C SCL, P1[7] 34
P1[6]
24
I2C SDA, P1[5]
33
P1[4], EXTCLK
25
NC
32
P1[2]
26
P1[3]
31
P1[0], I2C
SDA, SDATA
27
SCLK, I2C SCL, P1[1]
30 NC
28Vss
29
NC
Vss
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