AT89C51AC3 Atmel Corporation, AT89C51AC3 Datasheet - Page 58

• Manufacturer Part Number: AT89C51AC3
• Manufacturer: Atmel Corporation

Specifications of AT89C51AC3

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 62.5
• Sram (kbytes): 2.25
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

Figure 30. Hardware Boot Process Algorithm
Application
Programming Interface
XROW Bytes
58
AT89C51AC3
Application
in FM0
Several Application Program Interface (API) calls are available for use by an application
program to permit selective erasing and programming of Flash pages. All calls are made
by functions.
All these APIs are describe in an documentation: "In-System Programing: Flash Library
for AT89C51AC3" available on the Atmel web site.
Table 23. XROW Mapping
Description
Copy of the Manufacturer Code
Copy of the Device ID#1: Family code
Copy of the Device ID#2: Memories size and type
Copy of the Device ID#3: Name and Revision
ENBOOT = 0
PC = 0000h
No
Boot Loader
in FM1
condition?
Hardware
BLJB = = 0
Yes
No
RESET
?
ENBOOT = 1
PC = F800h
FCON = F0h
Yes
Default Value
58h
D7h
FFh
FEh
bit ENBOOT in AUXR1 register
is initialized with BLJB.
ENBOOT = 1
PC = F800h
FCON = 00h
Address
30h
31h
60h
61h
4383D–8051–02/08