AT89C51SND1C-ROTUL Atmel, AT89C51SND1C-ROTUL Datasheet - Page 122
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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16.6.4.3
Figure 16-19. Data Stream Reception Flows
122
AT8xC51SND1C
Data Reading
read 8 data from MMDAT
a. Polling mode
STOP Command
F1FI or F2FI = 1?
Data Stream
FIFO Reading
No More Data
To Receive?
Reception
FIFO Full?
Send
may reset the data controller and its internal state machine by setting and clearing the DCR bit in
MMCON2 register.
This time-out may be disarmed after receiving 8 data (F1FI flag set) or after receiving end of
frame (EOFI flag set) in case of block length less than 8 data (1, 2 or 4).
Data is read from the FIFO by reading to MMDAT register. Each time one FIFO becomes full
(F1FI or F2FI set), user is requested to flush this FIFO by reading 8 data.
Unmask FIFOs Full
Data Stream
Initialization
F1FM = 0
F2FM = 0
b. Interrupt mode
read 8 data from MMDAT
STOP Command
F1FI or F2FI = 1?
Reception ISR
Mask FIFOs Full
Data Stream
FIFO Reading
No More Data
To Receive?
FIFO Full?
F1FM = 1
F2FM = 1
Send
4109L–8051–02/08
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