AT89C51CC03C-RLRIM Atmel, AT89C51CC03C-RLRIM Datasheet - Page 4
![IC 8051 MCU FLASH 64K 44VQFP](/photos/6/92/69202/313-44-vqfp_sml.jpg)
AT89C51CC03C-RLRIM
Manufacturer Part Number
AT89C51CC03C-RLRIM
Description
IC 8051 MCU FLASH 64K 44VQFP
Manufacturer
Atmel
Series
AT89C CANr
Datasheets
1.AT89C51CC03C-S3RIM.pdf
(198 pages)
2.AT89C51CC03C-S3RIM.pdf
(32 pages)
3.AT89C51CC03C-S3RIM.pdf
(27 pages)
4.AT89C51CC03C-S3RIM.pdf
(184 pages)
Specifications of AT89C51CC03C-RLRIM
Core Processor
8051
Core Size
8-Bit
Speed
40MHz
Connectivity
CAN, 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-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
AT89C51CC03CRLRTR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Mapping and Default
Value of Hardware
Security Byte
Security
4
AT89C51CC03 CAN Bootloader
The 4 MSB of the Hardware Byte can be read/written by software (this area is called Fuse bits).
The 4 LSB can only be read by software and written by hardware in parallel mode (with parallel
programmer devices).
Note:
The bootloader has Software Security Byte (SSB) to protect itself from user access or ISP
access.
The Software Security Byte (SSB) protects from ISP accesses. The command "Program Soft-
ware Security Bit" can only write a higher priority level. There are three levels of security:
•
•
•
Only a full chip erase command can reset the software security bits.
Level 0: NO_SECURITY (FFh)
This is the default level.
From level 0, one can write level 1 or level 2.
Level 1: WRITE_SECURITY (FEh)
In this level it is impossible to write in the Flash memory, BSB and SBV.
The Bootloader returns ID_ERROR message.
From level 1, one can write only level 2.
Level 2: RD_WR_SECURITY (FCh)
Level 2 forbids all read and write accesses to/from the Flash memory.
The Bootloader returns ID_ERROR message.
U: Unprogram = 1
P: Program = 0
Flash/EEPROM
Fuse bit
BSB & SBV & EB Any access allowed
SSB
Manufacturer info Read only access allowed
Bootloader info
Erase block
Full chip erase
Blank Check
Bit Position
7
6
5
4
3
2
1
0
X2B
BLJB
reserved
reserved
reserved
LB2
LB1
LB0
Mnemonic
Level 0
Any access allowed
Any access allowed
Any access allowed
Read only access allowed
Allowed
Allowed
Allowed
Default Value
U
U
U
U
U
U
P
P
Description
To start in x1 mode
To map the boot area in code area between F800h-FFFFh
To lock the chip (see datasheet)
Level 1
Read only access allowed
Read only access allowed
Read only access allowed
Write level2 allowed
Read only access allowed
Read only access allowed
Not allowed
Allowed
Allowed
Level 2
All access not allowed
All access not allowed
All access not allowed
Read only access allowed
All access not allowed
All access not allowed
Not allowed
Allowed
Allowed
4251B–CAN–03/08