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CY8C21634, CY8C21534
CY8C21434, CY8C21334, CY8C21234
Document Number: 38-12025 Rev. *O Page 10 of 45
28-Pin Part Pinout
Figure 5. CY8C21534 28-Pin PSoC Device
A, I, M, P0[7]
A, I, M, P0[5]
A, I, M, P0[3]
A, I, M, P0[1]
M, P2[7]
M, P2[5]
M, P2[3 ]
M, P2[1]
Vss
M, I2C SCL, P1[7]
M, I2 C SDA, P1 [5 ]
M, P1[3]
M, I2C SCL, P1[1]
Vss
Vd d
P0[6], A, I, M
P0[4], A, I, M
P0[2], A, I, M
P0[0], A, I, M
P2[6], M
P2[4], M
P2[2], M
P2[0], M
XRES
P1[6], M
P1[4 ], EXTCL K, M
P1[2], M
P1[0], I2C SDA, M
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
Table 5. Pin Definitions - CY8C21534 28-Pin (SSOP)
Pin No.
Type
Name Description
Digital Analog
1 IO I, M P0[7] Analog column mux input.
2 IO I, M P0[5] Analog column mux input and column output.
3 IO I, M P0[3] Analog column mux input and column output, integrating input.
4 IO I, M P0[1] Analog column mux input, integrating input.
5 IO M P2[7]
6 IO M P2[5]
7 IO I, M P2[3] Direct switched capacitor block input.
8 IO I, M P2[1] Direct switched capacitor block input.
9 Power Vss Ground connection.
10 IO M P1[7] I2C Serial Clock (SCL).
11 IO M P1[5] I2C Serial Data (SDA).
12 IO M P1[3]
13 IO M P1[1] I2C Serial Clock (SCL), ISSP-SCLK
[3]
.
14 Power Vss Ground connection.
15 IO M P1[0] I2C Serial Data (SDA), ISSP-SDATA
[3]
.
16 IO M P1[2]
17 IO M P1[4] Optional External Clock Input (EXTCLK).
18 IO M P1[6]
19 Input XRES Active high external reset with internal pull down.
20 IO I, M P2[0] Direct switched capacitor block input.
21 IO I, M P2[2] Direct switched capacitor block input.
22 IO M P2[4]
23 IO M P2[6]
24 IO I, M P0[0] Analog column mux input.
25 IO I, M P0[2] Analog column mux input.
26 IO I, M P0[4] Analog column mux input
27 IO I, M P0[6] Analog column mux input.
28 Power Vdd Supply voltage.
LEGEND A: Analog, I: Input, O = Output, and M = Analog Mux Input.
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