AT80C51SND1C-ROTIL Atmel, AT80C51SND1C-ROTIL Datasheet - Page 21

• Manufacturer Part Number: AT80C51SND1C-ROTIL
• Description: IC MCU FLASH MP3 DECODER 80-TQFP
• Manufacturer: Atmel
• Series: 80Cr

Specifications of AT80C51SND1C-ROTIL

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, IDE/ATAPI, MMC, SPI, UART/USART, USB
• Peripherals: Audio, I²S, MP3, PCM, POR, WDT
• Number Of I /o: 44
• Program Memory Type: ROMless
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.3 V
• Data Converters: A/D 2x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: AT80C51SND1CROTIL

6.3.1
6.3.2
6.3.3
6.3.4
6.4
4109L–8051–02/08
Hardware Security System
User Space
Boot Space
Hardware Security Space
Extra Row Space
Figure 6-6.
This space is composed of a 64K Bytes Flash memory organized in 512 pages of 128 Bytes. It
contains the user’s application code.
This space can be read or written by both software and hardware modes.
This space is composed of a 4K Bytes Flash memory. It contains the boot loader for In-System
Programming and the routines for In Application Programming.
This space can only be read or written by hardware mode using a parallel programming tool.
This space is composed of one Byte: the Hardware Security Byte (HSB see Table 23) divided in
2 separate nibbles. The MSN contains the X2 mode configuration bit and the Boot Loader Jump
Bit as detailed in Section “Boot Memory Execution”, page 22 and can be written by software
while the LSN contains the lock system level to protect the memory content against piracy as
detailed in Section “Hardware Security System”, page 21 and can only be written by hardware.
This space is composed of 2 Bytes:
•
•
The AT89C51SND1C implements three lock bits LB2:0 in the LSN of HSB (see Table 23) pro-
viding three levels of security for user’s program as described in
is always set in read disabled mode.
Level 0 is the level of an erased part and does not enable any security feature.
Level 1 locks the hardware programming of both user and boot memories.
The Software Boot Vector (SBV, see Table 24).
This Byte is used by the software boot loader to build the boot address.
The Software Security Byte (SSB, see
This Byte is used to lock the execution of some boot loader commands.
FFFFh
0000h
AT89C51SND1C Memory Architecture
Flash Memory
64K Bytes
Hardware Security
Extra Row
User
Table
25).
FFFFh
F000h
Flash Memory
4K Bytes
Table 23
AT8xC51SND1C
while the AT83SND1C
Boot
21