9 / 35 page  April 20, 2005 Document No. 38-12025 Rev. *G 9 CY8C21x34 Final Data Sheet 1. Pin Information 1.1.2 20-Pin Part Pinout Table 1-2. 20-Pin Part Pinout (SSOP) Pin No. Type Name Description CY8C21334 20-Pin PSoC Device Digital Analog 1 IO I, M P0[7] Analog column mux input. 2 IO I, M P0[5] Analog column mux input. 3 IO I, M P0[3] Analog column mux input, integrating input. 4 IO I, M P0[1] Analog column mux input, integrating input. 5 Power Vss Ground connection. 6 IO M P1[7] I2C Serial Clock (SCL). 7 IO M P1[5] I2C Serial Data (SDA). 8 IO M P1[3] 9 IO M P1[1] I2C Serial Clock (SCL), ISSP-SCLK. 10 Power Vss Ground connection. 11 IO M P1[0] I2C Serial Data (SDA), ISSP-SDATA. 12 IO M P1[2] 13 IO M P1[4] Optional External Clock Input (EXT- CLK). 14 IO M P1[6] 15 Input XRES Active high external reset with internal pull down. 16 IO I, M P0[0] Analog column mux input. 17 IO I, M P0[2] Analog column mux input. 18 IO I, M P0[4] Analog column mux input. 19 IO I, M P0[6] Analog column mux input. 20 Power Vdd Supply voltage. LEGEND A = Analog, I = Input, O = Output, and M = Analog Mux Input. SSOP Vdd P0[6], A, I, M P0[4], A, I, M P0[2], A, I, M P0[0], A, I, M XRES P1[6],M P1[4], EXTCLK,M P1[2],M P1[0],I2C SDA, M 20 19 18 17 16 15 14 13 12 11 1 2 3 4 5 6 7 8 9 10 A, I, M, P0[7] A, I, M, P0[5] A, I, M, P0[3] A, I, M, P0[1] M,I2C SCL, P1[7] SDA, P1[5] M,P1[3] SCL, P1[1] Vss Vss M,I2C M,I2C |
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