Cypress CY8C21334, CY8C21634, CY8C21234, CY8C21434 manual CY8C21534 28-Pin PSoC Device

CY8C21634, CY8C21534

CY8C21434, CY8C21334, CY8C21234

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,I2CSCL,P1[7] M,I2C SDA,P1[5] M,P1[3] M,I2CSCL,P1[1] Vss

128 Vdd

227 P0[6], A,I, M

326 P0[4], A,I, M

425 P0[2], A,I, M

524 P0[0], A,I, M

623 P2[6],M

7SSOP 22 P2[4],M

821 P2[2],M

920 P2[0],M

1019 XRES

1118 P1[6],M

1217 P1[4],EXTCLK,M

1316 P1[2],M

1415 P1[0],I2C SDA,M

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.
Document Number: 38-12025 Rev. *O					Page 10 of 45

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