M55800A Atmel Corporation, M55800A Datasheet - Page 23

• 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

SPI Signals
1727E–ATARM–01/04
SPCK/MISO/
The inputs must meet the minimum pulse width and period constraints shown in Table
31 and Table 32 and as represented in Figure 9.
Table 31. SPI Input Minimum Pulse Width
Table 32. SPI Minimum Input Period
Figure 9. SPI Signals
MOSI/NSS
Symbol
SPI
Symbol
SPI
1
2
SPCK
Parameter
SPK/MISO/MOSI/NSS Minimum Pulse Width
Parameter
SPCK Minimum Input Period
SPI
1
SPI
1
Min Input Period
Min Pulse Width
AT91M55800A
SPI
5(t
3(t
CPMCK
CPMCK
2
/2)
/2)
Units
Units
ns
ns
23