Document Number: 002-00123 Rev. *J Page 8 of 35
PSoC
®
4: PSoC 4000S Family
Datasheet
Descriptions of the Pin functions are as follows:
VDDD: Power supply for the digital section.
VDDA: Power supply for the analog section.
VSSD, VSSA: Ground pins for the digital and analog sections respectively.
VCCD: Regulated digital supply (1.8 V ±5%)
VDD: Power supply to all sections of the chip
VSS: Ground for all sections of the chip
Alternate Pin Functions
Each port pin can be assigned to one of multiple functions; it can, for instance, be an analog I/O, a digital peripheral function, an LCD
pin, or a CapSense pin. The pin assignments are shown in the following table.
17 P3.4 14 P3.4
18 P3.5 15 P3.5
19 P3.6 16 P3.6
20 P3.7 17 P3.7
21 VDDD
22 P4.0 13 P4.0 9 P4.0 E3 P4.0 18 P4.0
23 P4.1 14 P4.1 10 P4.1 D2 P4.1 19 P4.1
24 P4.2 15 P4.2 11 P4.2 E2 P4.2 20 P4.2
25 P4.3 16 P4.3 12 P4.3 E1 P4.3 21 P4.3
Table 1. PSoC 4000S Pin List (continued)
48-TQFP 32-QFN 24-QFN 25-CSP 40-QFN
Pin Name Pin Name Pin Name Pin Name Pin Name
Port/
Pin
Analog Smart I/O Alternate Function 1 Alternate Function 2 Alternate Function 3 Deep Sleep 1 Deep Sleep 2
P0.0 lpcomp.in_p[0] tcpwm.tr_in[0] scb[0].spi_select1:0
P0.1 lpcomp.in_n[0] tcpwm.tr_in[1] scb[0].spi_select2:0
P0.2 lpcomp.in_p[1] scb[0].spi_select3:0
P0.3 lpcomp.in_n[1]
P0.4 wco.wco_in scb[1].uart_rx:0 scb[1].i2c_scl:0 scb[1].spi_mosi:1
P0.5 wco.wco_out scb[1].uart_tx:0 scb[1].i2c_sda:0 scb[1].spi_miso:1
P0.6 srss.ext_clk scb[1].uart_cts:0 scb[1].spi_clk:1
P0.7 scb[1].uart_rts:0 scb[1].spi_select0:1
P1.0 tcpwm.line[2]:1 scb[0].uart_rx:1 scb[0].i2c_scl:0 scb[0].spi_mosi:1
P1.1 tcpwm.line_compl[2]:1 scb[0].uart_tx:1 scb[0].i2c_sda:0 scb[0].spi_miso:1
P1.2 tcpwm.line[3]:1 scb[0].uart_cts:1 tcpwm.tr_in[2] scb[0].spi_clk:1
P1.3 tcpwm.line_compl[3]:1 scb[0].uart_rts:1 tcpwm.tr_in[3] scb[0].spi_select0:1
P1.4 scb[0].spi_select1:1
P1.5 scb[0].spi_select2:1