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ST9293J5 数据表(PDF) 3 Page - STMicroelectronics |
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ST9293J5 数据表(HTML) 3 Page - STMicroelectronics |
3 / 4 page I/O PORT Name Function Alternate Function Pin Assignment Port.bit 9293J P0.0 I/O 12 P0.1 I/O 11 P0.2 I/O 10 P0.3 I/O 9 P0.4 I/O 8 P0.5 I/O 7 P0.6 I/O 6 P0.7 I/O 5 P2.0 INT6 I External Interrupt 6 39 P2.1 INT7 I External Interrupt 7 40 P2.2 INT0 I External Interrupt 0 41 Table 1-1. ST9293 I/O Port Alternate Function Summary 1.2 PIN DESCRIPTION VSYNC. Vertical Synch. Vertical video synchroni- sation input to OSD. Positive or negative polarity. HSYNC. Horizontal Synch. Horizontal video syn- chronisation input to OSD. Positive or negative po- larity. PLLF. PLL Filter input. Filter input for the OSD for PLL feed-back. PLLR. PLL Resistor connection pin. For resistor connection to select the PLL gain adjust. RESET. Reset (input, active low). The ST9 is ini- tialised by the Reset signal. With the deactivation of RESET, program execution begins from the Pro- gram memory location pointed to by the vector contained in program memory locations 00h and 01h. OSCIN, OSCOUT. Oscillator (input and output). These pins connect a parallel-resonant crystal (24MHz maximum), or an external source to the on-chip clock oscillator and buffer. OSCIN is the in- put of the oscillator inverter and internal clock gen- erator; OSCOUT is the output of the oscillator inverter. AVDD. Analog VDD of PLL. This pin must be tied to VDD externally to the ST9293. VDD. Main Power Supply Voltage (5V ±10%) VSS, VSS2. Digital Circuit Ground, these pins must be connected together externally to the ST9293. P0.0-P0.7, P2.0-P2.7, P3.3-P3.7, P4.5-P4.7, P5.0-P5.6 I/O Port Lines (Input/Output, TTL or CMOS compatible). 31 lines grouped into I/O ports, bit programmable under program control as general purpose I/O or as Alternate functions (see next section). P3.3 and P3.4 are true 12V open drain outputs when set in output mode. 1.2.1 I/O Port Alternate Functions. Each pin of the I/O ports of the ST9293 may as- sume software programmable Alternative Func- tions as shown in the Pin Configuration Drawings. Table 1 shows the Functions allocated to each I/O Port pin. ® ST9293 3/4 |
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类似说明 - ST9293J5 |
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