AT89C51AC2 Atmel Corporation, AT89C51AC2 Datasheet - Page 7

• Manufacturer Part Number: AT89C51AC2
• Manufacturer: Atmel Corporation

Specifications of AT89C51AC2

• Flash (kbytes): 32 Kbytes
• Max. Operating Frequency: 40 MHz
• Cpu: 8051-12C
• Max I/o Pins: 34
• Uart: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 62.5
• Sram (kbytes): 1.25
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

Figure 3. Regular Boot Process
4231D–CAN–03/08
Start Application
ENBOOT = 0
PC = 0000h
Yes
Start User Bootloader
FCON = 00h
A/T89C51AC2 UART Bootloader
SBV < F8h
Yes
Hardware
Condition
BLJB = 1
RESET
No
No
No
No
Yes
ENBOOT = 1
FCON = 0Fh
PC = F800h
Yes
Bit ENBOOT in AUXR1 Register is
Initialized with BLJB Inverted
ENBOOT = 1
FCON = 00h
PC = F800h
Start Bootloader
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