Cypress Semiconductor CY8C21234 Bedienungsanleitung PDF herunterladen (Seite 8)

CY8C21634/CY8C21534

CY8C21434/CY8C21334/CY8C21234

Document Number: 38-12025 Rev. *Q Page 8 of 45

Pin Information

The CY8C21x34 PSoC device is available in a variety of packages which are listed in the following tables. Every port pin (labeled with

a “P”) is capable of Digital I/O and connection to the common analog bus. However, Vss, Vdd, SMP, and XRES are not capable of

Digital I/O.

16-Pin Part Pinout

Figure 3. CY8C21234 16-Pin PSoC Device

Note

3. These are the ISSP pins, which are not High Z at POR (Power On Reset). See the PSoC Technical Reference Manual for details.

SOIC

Vd d

P0[6], A, I, M

P0[4], A, I, M

P0[2], A, I, M

P0[0], A, I, M

P1[4 ], EXTCL K, M

P1[2], M

P1[0 ], I2 C SDA, M

A, I, M, P0[7]

A, I, M, P0[5]

A, I, M, P0[3]

A, I, M, P0[1]

SMP

Vss

M, I2C SCL, P1[1]

Vss

Table 3. Pin Definitions - CY8C21234 16-Pin (SOIC)

Pin No.

Type

Name Description

Digital Analog

1 I/O I, M P0[7] Analog column mux input.

2 I/O I, M P0[5] Analog column mux input.

3 I/O I, M P0[3] Analog column mux input, integrating input.

4 I/O I, M P0[1] Analog column mux input, integrating input.

5 Power SMP Switch Mode Pump (SMP) connection to required external components.

6 Power Vss Ground connection.

7 I/O M P1[1] I2C Serial Clock (SCL), ISSP-SCLK

[3]

8 Power Vss Ground connection.

9 I/O M P1[0] I2C Serial Data (SDA), ISSP-SDATA

[3]

10 I/O M P1[2]

11 I/O M P1[4] Optional External Clock Input (EXTCLK).

12 I/O I, M P0[0] Analog column mux input.

13 I/O I, M P0[2] Analog column mux input.

14 I/O I, M P0[4] Analog column mux input.

15 I/O I, M P0[6] Analog column mux input.

16 Power Vdd Supply voltage.

LEGEND A = Analog, I = Input, O = Output, and M = Analog Mux Input.

[+] Feedback

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