AT89LP428 Atmel Corporation, AT89LP428 Datasheet - Page 146

• Manufacturer Part Number: AT89LP428
• Manufacturer: Atmel Corporation

Specifications of AT89LP428

• Flash (kbytes): 4 Kbytes
• Max. Operating Frequency: 25 MHz
• Cpu: 8051-1C
• Max I/o Pins: 30
• Spi: 1
• Uart: 1
• Sram (kbytes): 0.75
• Eeprom (bytes): 512
• Self Program Memory: IAP
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 3
• Isp: SPI/OCD
• Watchdog: Yes

8
9
10 I/O Ports .................................................................................................. 35
11 Enhanced Timer 0 and Timer 1 with PWM ........................................... 41
12 Enhanced Timer 2 .................................................................................. 52
13 Compare/Capture Array ........................................................................ 61
14 External Interrupts ................................................................................. 74
15 General-purpose Interrupts .................................................................. 74
16 Serial Interface (UART) .......................................................................... 77
Power Saving Modes ............................................................................. 26
Interrupts ................................................................................................ 29
8.1
8.2
9.1
9.2
10.1
10.2
10.3
10.4
11.1
11.2
11.3
11.4
11.5
12.1
12.2
12.3
12.4
12.5
13.1
13.2
13.3
13.4
16.1
Idle Mode .........................................................................................................26
Power-down Mode ...........................................................................................27
Interrupt Response Time .................................................................................31
Interrupt Registers ...........................................................................................32
Port Configuration ............................................................................................35
Port 2 Analog Functions ..................................................................................38
Port Read-Modify-Write ...................................................................................39
Port Alternate Functions ..................................................................................39
Mode 0 – Variable Width Timer/Counter .........................................................42
Mode 1 – 16-bit Auto-Reload Timer/Counter ...................................................42
Mode 2 – 8-bit Auto-Reload Timer/Counter .....................................................43
Mode 3 – 8-bit Split Timer ...............................................................................44
Pulse Width Modulation ...................................................................................47
Timer 2 Registers ............................................................................................53
Capture Mode ..................................................................................................55
Auto-Reload Mode ...........................................................................................55
Baud Rate Generator ......................................................................................59
Frequency Generator (Programmable Clock Out) ...........................................60
CCA Registers .................................................................................................62
Input Capture Mode .........................................................................................65
Output Compare Mode ....................................................................................66
Pulse Width Modulation Mode .........................................................................68
Multiprocessor Communications .....................................................................77
3654A–MICRO–8/09