AT89C51RB2 Atmel Corporation, AT89C51RB2 Datasheet - Page 123

• Manufacturer Part Number: AT89C51RB2
• Manufacturer: Atmel Corporation

Specifications of AT89C51RB2

• Flash (kbytes): 16 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Sram (kbytes): 1.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

Datasheet Change
Log
Changes from 4180A-
08/02 to 4180B-04/03
Changes from 4180B-
04/03 to 4180C-12/03
Changes from 4180C-
12/03 - 4180D - 06/05
Changes from 4180D -
06/05 to 4180E - 10/06
4180E–8051–10/06
1. Changed the endurance of Flash to 100, 000 Write/Erase cycles.
2. Added note on Flash retention formula for V
1. Max frequency update for 4.5 to 5.5V range up to 60 MHz (internal code
1. Added Green product ordering information. Page 119.
1. Correction to PDIL40 figure on page 9.
Standard Voltage”, page 107.
execution).
IH1
, in Section “DC Parameters for
AT89C51RB2/RC2
123