AT89C51SND2C-7FTUL Atmel, AT89C51SND2C-7FTUL Datasheet - Page 68

• Manufacturer Part Number: AT89C51SND2C-7FTUL
• Description: IC 8051 MCU FLASH 64K MP3 100BGA
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51SND2C-7FTUL

• 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: 32
• 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; D/A 2x20b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TFBGA
• Data Bus Width: 8 bit
• Data Ram Size: 2.25 KB
• Interface Type: ATAPI, I2S, IDE, SPI, UART, USB
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: AT89C51SND2C7FTUL

13.6.2
68
AT8xC51SND2C/MP3B
Management
Reading the MP3STA register automatically clears the interrupt flags (acknowledgment) except
the 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.
Figure 13-6. MP3 Interrupt Service Routine Flow
Note:
1. Test these bits only if needed (unmasked interrupt).
Reload MP3 Frame
Through MP3DAT
Synchro Error
Data Request
Write MP3 Data
to MP3DAT
Handler
Handler
Load New MP3 Frame
Ancillary Data?
Through MP3DAT
MP3 Decoder
Data Request?
Read MP3STA
Layer Error?
Sync Error?
MPFREQ = 1?
ERRSYN = 1?
ERRSYN = 1?
MPANC = 1?
CRC Error
Handler
ISR
(1)
(1)
(1)
Read ANN2:0 Ancillary
Bytes From MP3ANC
Ancillary Data
Layer Error
Handler
Handler
4341H–MP3–10/07