AT89C51AC3-SLSIM Atmel, AT89C51AC3-SLSIM Datasheet - Page 49
AT89C51AC3-SLSIM
Manufacturer Part Number
AT89C51AC3-SLSIM
Description
IC 8051 MCU FLASH 64K 44PLCC
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51AC3-RLTUM.pdf
(140 pages)
Specifications of AT89C51AC3-SLSIM
Core Processor
8051
Core Size
8-Bit
Speed
60MHz
Connectivity
UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
36
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
2.25K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT89C51AC3-SLSIM
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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Hardware Security Byte
4383D–8051–02/08
Figure 26. Flash and Extra Row Programming Procedure
The following procedure is used to program the Hardware
and is summarized in Figure 27:
•
•
•
•
•
•
•
Set FPS and map Hardware byte (FCON = 0x0C)
Save and disable the interrupts.
Load DPTR at address 0000h.
Load Accumulator register with the data to load.
Execute the MOVX @DPTR, A instruction.
Launch the programming by writing the data sequence 54h followed by A4h in
FCON register (only from FM1).
The end of the programming indicated by the FBusy flag cleared.
Restore the interrupts.
Column Latches Loading
Launch Programming
Save and Disable IT
End Programming
Programming
Flash Spaces
see Figure 25
FCON = Axh
FCON = 5xh
FCON = 00h
Clear Mode
Cleared?
Restore IT
FBusy
EA = 0
Security
Byte space
49
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