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AT89LP428-20AU Datasheet(PDF) 4 Page - ATMEL Corporation |
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AT89LP428-20AU Datasheet(HTML) 4 Page - ATMEL Corporation |
4 / 149 page 4 3654A–MICRO–8/09 AT89LP428/828 17 21 19 P1.1 I/O I I P1.1: User-configurable I/O Port 1 bit 1. T2EX: Timer 2 External Capture/Reload Input. GPI1: General-purpose Interrupt input 1. 18 22 20 P1.2 I/O I P1.2: User-configurable I/O Port 1 bit 2. GPI2: General-purpose Interrupt input 2. 19 23 N/A P4.3 I/O P4.3: User-configurable I/O Port 4 bit 3. 20 24 21 VCC I Supply Voltage. 21 25 N/A P4.2 I/O P4.2: User-configurable I/O Port 4 bit 2. 22 26 22 P1.3 I/O I P1.3: User-configurable I/O Port 1 bit 3. GPI3: General-purpose Interrupt input 3. 23 27 23 P1.4 I/O I I P1.4: User-configurable I/O Port 1 bit 4. SS: SPI Slave-select. GPI6: General-purpose Interrupt input 4. 24 28 24 P1.5 I/O I/O I P1.5: User-configurable I/O Port 1 bit 5. MOSI: SPI master-out/slave-in. When configured as master, this pin is an output. When configured as slave, this pin is an input. GPI5: General-purpose Interrupt input 5. 25 29 25 P1.6 I/O I/O I P1.6: User-configurable I/O Port 1 bit 6. MISO: SPI master-in/slave-out. When configured as master, this pin is an input. When configured as slave, this pin is an output. GPI6: General-purpose Interrupt input 6. 26 30 26 P1.7 I/O I/O I P1.7: User-configurable I/O Port 1 bit 7. SCK: SPI Clock. When configured as master, this pin is an output. When configured as slave, this pin is an input. GPI7: General-purpose Interrupt input 7. 27 31 27 P2.6 I/O I P2.6: User-configurable I/O Port 2 bit 6. AIN2: Analog Input 2. 28 32 28 P2.7 I/O I P2.7: User-configurable I/O Port 2 bit 7. AIN3: Analog Input 3. 29 1 1 P2.5 I/O I P2.5: User-configurable I/O Port 2 bit 5. AIN1: Analog Input 1. 30 2 2 P2.4 I/O I P2.4: User-configurable I/O Port 2 bit 5. AIN0: Analog Input 0. 31 3 3 P3.0 I/O I P3.0: User-configurable I/O Port 3 bit 0. RXD: Serial Port Receiver Input. 32 4 4 P3.1 I/O O P3.1: User-configurable I/O Port 3 bit 1. TXD: Serial Port Transmitter Output. Table 1-1. AT89LP428/828 Pin Description (Continued) Pin Number Symbol Type Description TQFP /MLF PLCC PDIP |
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