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AT83C5136-RDTUL 数据表(PDF) 7 Page - ATMEL Corporation |
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AT83C5136-RDTUL 数据表(HTML) 7 Page - ATMEL Corporation |
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7 / 171 page  7 AT83C5134/35/36 7683B–USB–03/07 Signals All the AT83C5134/35/36 signals are detailed by functionality on Table 1 through Table 12. Table 1. Keypad Interface Signal Description Table 2. Programmable Counter Array Signal Description Table 3. Serial I/O Signal Description Signal Name Type Description Alternate Function KIN[7:0) I Keypad Input Lines Holding one of these pins high or low for 24 oscillator periods triggers a keypad interrupt if enabled. Held line is reported in the KBCON register. P1[7:0] Signal Name Type Description Alternate Function ECI I External Clock Input P1.2 CEX[4:0] I/O Capture External Input Compare External Output P1.3 P1.4 P1.5 P1.6 P1.7 Signal Name Type Description Alternate Function RxD I Serial Input The serial input for Extended UART. This I/O is 5 Volt Tolerant. P3.0 TxD O Serial Output The serial output for Extended UART. This I/O is 5 Volt Tolerant. P3.1 Table 4. Timer 0, Timer 1 and Timer 2 Signal Description Signal Name Type Description Alternate Function INT0 I Timer 0 Gate Input INT0 serves as external run control for timer 0, when selected by GATE0 bit in TCON register. External Interrupt 0 INT0 input set IE0 in the TCON register. If bit IT0 in this register is set, bits IE0 are set by a falling edge on INT0. If bit IT0 is cleared, bits IE0 is set by a low level on INT0. P3.2 INT1 I Timer 1 Gate Input INT1 serves as external run control for Timer 1, when selected by GATE1 bit in TCON register. External Interrupt 1 INT1 input set IE1 in the TCON register. If bit IT1 in this register is set, bits IE1 are set by a falling edge on INT1. If bit IT1 is cleared, bits IE1 is set by a low level on INT1. P3.3 |
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