AT89LP428 Atmel Corporation, AT89LP428 Datasheet - Page 147

• 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

3654A–MICRO–8/09
17 Enhanced Serial Peripheral Interface .................................................. 91
18 Dual Analog Comparators ..................................................................... 98
19 Programmable Watchdog Timer ......................................................... 105
20 Instruction Set Summary .................................................................... 107
21 Register Index ...................................................................................... 111
22 On-chip Debug System ....................................................................... 113
23 Programming the Flash Memory ........................................................ 115
16.2
16.3
16.4
16.5
16.6
16.7
17.1
17.2
17.3
17.4
17.5
18.1
18.2
18.3
19.1
22.1
22.2
22.3
23.1
23.2
23.3
23.4
23.5
23.6
23.7
Baud Rates ......................................................................................................79
More About Mode 0 .........................................................................................81
More About Mode 1 .........................................................................................85
More About Modes 2 and 3 .............................................................................87
Framing Error Detection ..................................................................................90
Automatic Address Recognition ......................................................................90
Master Operation .............................................................................................93
Slave Operation ...............................................................................................94
Pin Configuration .............................................................................................95
Serial Clock Timing ..........................................................................................96
SPI Registers ...................................................................................................97
Analog Input Muxes .......................................................................................100
Internal Reference Voltage ............................................................................100
Comparator Interrupt Debouncing .................................................................100
Software Reset ..............................................................................................106
Physical Interface ..........................................................................................113
Software Breakpoints ....................................................................................114
Limitations of On-chip Debug ........................................................................114
Physical Interface ..........................................................................................115
Memory Organization ....................................................................................116
Command Format ..........................................................................................117
Status Register ..............................................................................................120
DATA Polling .................................................................................................120
Flash Security ................................................................................................120
User Configuration Fuses ..............................................................................121