AT89C51SND1C-ROTUL Atmel, AT89C51SND1C-ROTUL Datasheet - Page 23
AT89C51SND1C-ROTUL
Manufacturer Part Number
AT89C51SND1C-ROTUL
Description
IC 8051 MCU FLASH 64K MP3 80TQFP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT80C51SND1C-ROTIL.pdf
(213 pages)
Specifications of AT89C51SND1C-ROTUL
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 Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
2.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.3 V
Data Converters
A/D 2x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
80-TQFP, 80-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Figure 6-7.
6.6
6.7
4109L–8051–02/08
Preventing Flash Corruption
Registers
Hardware Boot Process Algorithm
The software process (boot loader) is detailed in the “Boot Loader Datasheet” Document.
See Section “Reset Recommendation to Prevent Flash Corruption”, page 49.
Table 22. AUXR1 Register
AUXR1 (S:A2h) – Auxiliary Register 1
Application
Standard Init
ENBOOT = 0
FCON = F0h
PC = 0000h
Number
User’s
7 - 6
Bit
7
5
4
-
Mnemonic Description
ENBOOT
Bit
6
-
-
-
1
Reserved
The value read from these bits are indeterminate. Do not set these bits.
Enable Boot Flash
Set this bit to map the boot Flash in the code space between at addresses F000h
to FFFFh.
Clear this bit to disable boot Flash.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
ENBOOT
Prog Cond Init
5
Boot Loader
ENBOOT = 1
Hard Cond?
Prog Cond?
FCON = F0h
PC = F000h
BLJB = P?
ISP = L?
Atmel’s
RESET
4
-
GF3
3
Hard Cond Init
ENBOOT = 1
FCON = 00h
PC = F000h
AT8xC51SND1C
2
0
1
-
DPS
0
23
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