AT89LP4052 Atmel Corporation, AT89LP4052 Datasheet - Page 93

• Manufacturer Part Number: AT89LP4052
• Manufacturer: Atmel Corporation

Specifications of AT89LP4052

• Flash (kbytes): 4 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 15
• Spi: 1
• Uart: 1
• Sram (kbytes): 0.25
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 2
• Isp: SPI
• Watchdog: Yes

Table of Contents (Continued)
3547J–MICRO–10/09
19. Serial Peripheral Interface ..................................................................... 42
20. Analog Comparator ............................................................................... 49
21. Programmable Watchdog Timer ........................................................... 51
22. Instruction Set Summary ...................................................................... 52
23. Programming the Flash Memory .......................................................... 57
24. Electrical Characteristics ...................................................................... 78
25. Ordering Information ............................................................................. 85
26. Packaging Information .......................................................................... 86
27. Revision History ..................................................................................... 89
19.1 Normal Mode .......................................................................................................44
19.2 Enhanced Mode ..................................................................................................44
19.3 Serial Clock Generator ........................................................................................47
19.4 SPI Pin Configuration ..........................................................................................48
20.1 Comparator Interrupt with Debouncing ...............................................................49
23.1 Programming Command Summary .....................................................................58
23.2 Status Register ....................................................................................................59
23.3 DATA Polling .......................................................................................................59
23.4 Parallel Programming ..........................................................................................59
23.5 In-System Programming (ISP) ............................................................................73
24.1 Absolute Maximum Ratings* ...............................................................................78
24.2 DC Characteristics ..............................................................................................79
24.3 Serial Peripheral Interface Timing ......................................................................80
24.4 External Clock Drive ............................................................................................82
24.5 Serial Port Timing: Shift Register Mode ..............................................................83
24.6 Test Conditions ...................................................................................................83
25.1 Green Package Option (Pb/Halide-free) .............................................................85
26.1 20P3 – PDIP ........................................................................................................86
26.2 20S2 – SOIC ......................................................................................................87
26.3 20X – TSSOP ......................................................................................................88
AT89LP2052/LP4052
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