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S3C72B7 Datasheet(PDF) 11 Page - Samsung semiconductor |
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S3C72B7 Datasheet(HTML) 11 Page - Samsung semiconductor |
11 / 37 page S3C72B5/C72B7/C72B9/P72B9 PRODUCT OVERVIEW 1-11 Table 1-1. S3C72B5/C72B7/C72B9 Pin Descriptions (Continued) Pin Name Pin Type Description Number Share Pin INT0 I External interrupts with rising/falling edge detection 28 P1.0 INT1 I External interrupts with rising/falling edge detection 29 P1.1 INT2 I External quasi-interrupts with rising/falling edge detection 30 P1.2 INT4 I External interrupts with rising/falling edge detection 31 P1.3 M I/O Alternated signal for SEG driver 32 P2.0 LCDFR I/O Synchronous frame signal for SEG driver 33 P2.1 CLO1 I/O Clock output or operating clock for SEG driver 34 P2.2 CLO2 I/O Clock output or operating clock for SEG driver 35 P2.3 CL I/O Data shift clock for SEG driver 36 P3.0 TCLO0 I/O Timer/counter0 clock output 36 P3.0 TCLO1 I/O Timer/counter1 clock output 37 P3.1 TCL0 I/O External clock input for timer/counter 0 38 P3.2 TCL1 I/O External clock input for timer/counter 1 39 P3.3 CIN0–CIN2 I/O CIN0,1: comparator input only CIN2: comparator input or external reference input 40, 41 42 P4.0–P4.1 P4.2 SEG0–SEG47 O LCD segment data output 122–75 – SEG48– SEG79 O LCD segment data output 74–43 Port13–6 SEG80– SEG87 O LCD segment data output 2,1, 128–123 COM15–8 COM0–COM7 O LCD common data output 10–3 – COM8–COM15 O LCD common data output 123–128 1, 2 SEG87–80 VLC1–VLC5 – LCD power supply. Voltage dividing resistors are fixed. 15–11 – VDD – Main power supply 20 – VSS – Ground 21 – Xin, Xout – Crystal, Ceramic, or RC oscillator signal I/O for main system clock. 23, 22 – XTin, XTout – Crystal oscillator signal I/O for subsystem clock. 25, 26 – TEST I Test signal input (must be connected to VSS) 24 – RESET I Reset signal 27 – NOTE: Pull-up resistors for all I/O ports are automatically disabled if they are configured to output mode. |
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