AT89C51RD2 Atmel Corporation, AT89C51RD2 Datasheet - Page 136

• Manufacturer Part Number: AT89C51RD2
• Manufacturer: Atmel Corporation

Specifications of AT89C51RD2

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Sram (kbytes): 2
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

4235K–8051–05/08
25 Electrical Characteristics .................................................................... 114
26 Ordering Information ........................................................................... 126
27 Packaging Information ........................................................................ 127
28 Document Revision History ................................................................ 133
24.3
24.4
24.5
24.6
24.7
24.8
24.9
24.10
25.1
25.2
25.3
27.1
27.2
27.3
27.4
28.1
28.2
28.3
28.4
28.5
28.6
28.7
28.8
28.9
28.10
Flash Registers and Memory Map ...................................................................94
Flash Memory Status....................................................................................... 97
Memory Organization ......................................................................................97
Bootloader Architecture ...................................................................................97
ISP Protocol Description ................................................................................102
Functional Description ...................................................................................103
Flow Description ............................................................................................104
API Call Description .......................................................................................112
Absolute Maximum Ratings ...........................................................................114
DC Parameters for Standard Voltage ............................................................114
AC Parameters ..............................................................................................117
PLCC44 .........................................................................................................127
VQFP44 .........................................................................................................129
PLCC68 .........................................................................................................131
VQFP64 .........................................................................................................132
Changes from 4235A -04/03 to 4135B - 06/03 ..............................................133
Changes from 4235B -06/03 to 4235C - 08/03 ..............................................133
Changes from 4235C - 08/03 to 4235D - 12/03 ............................................133
Changes from 4235D - 12/03 to 4235E - 04/04 .............................................133
Changes from 4235E - 04/04 to 4235F - 09/04 .............................................133
Changes from 4235F - 09/04 to 4235G 08/05 ...............................................133
Changes from 4235G 08/05 to 4235H - 10/06 ..............................................133
Changes from 4235H - 10/06 to 4235I - 04/07 ..............................................133
Changes from 4235I - 04/07 to 4235J - 01/08 ...............................................133
Changes from 4235J - 01/08 to 4235K - 05/08 .............................................133
AT89C51RD2/ED2
137