AT89C5132 Atmel Corporation, AT89C5132 Datasheet - Page 93

• Manufacturer Part Number: AT89C5132
• Manufacturer: Atmel Corporation

Specifications of AT89C5132

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-12C
• Max I/o Pins: 44
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Uart: 1
• Adc Channels: 2
• Adc Resolution (bits): 10
• Adc Speed (ksps): 22.7
• Sram (kbytes): 2.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 3.6
• Timers: 2
• Isp: UART/USB
• Watchdog: Yes

16.6.3.5
Figure 16-16. Data Stream Transmission Flows
4173E–USB–09/07
Busy Status
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
As shown in Figure 16-4 the card uses a busy token during a block write operation. This busy
status is reported by the CBUSY flag in MMSTA register and by the MCBI flag in MMINT 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 96.
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
STOP Command
Mask FIFOs Empty
F1EI or F2EI = 1?
Data Stream
No More Data
FIFO Empty?
FIFO Filling
To Send?
F1EM = 1
F2EM = 1
Send
AT89C5132
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