AT89C51SND1C-7HTUL Atmel, AT89C51SND1C-7HTUL Datasheet - Page 68

• Manufacturer Part Number: AT89C51SND1C-7HTUL
• Description: IC MCU 64KB FLASH MEM 81-CBGA
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51SND1C-7HTUL

• 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: 81-CBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

13.6.2
68
AT8xC51SND1C
Management
Figure 13-5. MP3 Decoder Interrupt System
Reading the MP3STA register automatically clears the interrupt flags (acknowledgment) except
the MPREQ and MPANC flags. This implies that register content must be saved and tested,
interrupt flag by interrupt flag to be sure not to forget any interrupts.
ERRCRC
ERRSYN
ERRLAY
MP3STA.7
MP3STA.6
MP3STA.5
MP3STA.4
MP3STA.3
MPANC
MPREQ
MSKREQ
MSKSYN
MP3CON.3
MP3CON.1
MSKANC
MSKCRC
MSKLAY
MP3CON.4
MP3CON.2
MP3CON.0
EMP3
IEN0.5
MP3 Decoder
Interrupt Request
4109L–8051–02/08