M55800A Atmel Corporation, M55800A Datasheet - Page 196

• Manufacturer Part Number: M55800A
• Manufacturer: Atmel Corporation

Specifications of M55800A

• Flash (kbytes): 0 Kbytes
• Pin Count: 176
• Max. Operating Frequency: 33 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 58
• Ext Interrupts: 58
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Uart: 3
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 72
• Resistive Touch Screen: No
• Dac Channels: 1
• Dac Resolution (bits): 10
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 8
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.3/5.0
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

20.4
Figure 20-4. SPI Transfer Format (NCPHA equals One, 8 bits per transfer)
Figure 20-5. SPI Transfer Format (NCPHA equals Zero, 8 bits per transfer)
196
SPCK cycle (for reference)
SPCK cycle (for reference)
NSS (to slave)
NSS (to slave)
(from master)
(from master)
(from slave)
(from slave)
Data Transfer
(CPOL=0)
(CPOL=1)
(CPOL=0)
(CPOL=1)
AT91M5880A
SPCK
SPCK
SPCK
SPCK
MOSI
MISO
MOSI
MISO
X
The following waveforms show examples of data transfers.
MSB
1
1
MSB
MSB
MSB
2
2
6
6
6
6
3
3
5
5
5
5
4
4
4
4
4
4
5
5
3
3
3
3
6
6
6
6
2
2
2
2
7
7
1
1
1
1
8
LSB
LSB
8
LSB
1745F–ATARM–06-Sep-07
LSB
X