at89lp428-25pu ATMEL Corporation, at89lp428-25pu Datasheet - Page 147

• Manufacturer Part Number: at89lp428-25pu
• Description: 8-bit Microcontroller With 4k/8k Bytes In-system Programmable Flash
• Manufacturer: ATMEL Corporation

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