AT89C51SND1C-ROTUL Atmel, AT89C51SND1C-ROTUL Datasheet - Page 120

• Manufacturer Part Number: AT89C51SND1C-ROTUL
• Description: IC 8051 MCU FLASH 64K MP3 80TQFP
• Manufacturer: Atmel
• Series: 89Cr

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: -

Figure 16-17. Data Stream Transmission Flows
120
AT8xC51SND1C
write 16 data to MMDAT
write 8 data to MMDAT
Start Transmission
STOP Command
a. Polling mode
F1EI or F2EI = 1?
Transmission
Data Stream
No More Data
FIFO Empty?
FIFOs Filling
FIFO Filling
DATEN = 1
DATEN = 0
To Send?
Send
which is set every time CBUSY toggles, i.e. when the card enters and exits its busy state. This
flag may generate an MMC interrupt request as detailed in Section "Interrupt", page 123.
write 16 data to MMDAT
Unmask FIFOs Empty
Start Transmission
Data Stream
Initialization
FIFOs Filling
DATEN = 1
DATEN = 0
F1EM = 0
F2EM = 0
b. Interrupt mode
write 8 data to MMDAT
Transmission ISR
Mask FIFOs Empty
STOP Command
F1EI or F2EI = 1?
Data Stream
No More Data
FIFO Empty?
FIFO Filling
To Send?
F1EM = 1
F2EM = 1
Send
4109L–8051–02/08