M42800A Atmel Corporation, M42800A Datasheet - Page 182

• Manufacturer Part Number: M42800A
• Manufacturer: Atmel Corporation

Specifications of M42800A

• Flash (kbytes): 0 Kbytes
• Pin Count: 144
• Max. Operating Frequency: 33 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 54
• Ext Interrupts: 54
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Resistive Touch Screen: No
• 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

Figure 19-2. Functional Flow Diagram in Master Mode
182
AT91M42800A
SP_RDR(RD) = Serializer
Serializer = SP_TDR(TD)
NPCS = SP_TDR(PCS)
Delay DLYBCT
Delay DLYBCS
Delay DLYBS
Data Transfer
NPCS = 0xF
SPI Enable
RDRF = 1
TDRE = 1
TDRE
TDRE
0
1
1
PS
Variable peripheral
0
1
0
Fixed peripheral
NPCS = SP_MR(PCS)
New peripheral
NPCS = SP_TDR(PCS)
Delay DLYBCS
SP_TDR(PCS)
NPCS = 0xF
1
PS
Variable peripheral
0
Same peripheral
Fixed peripheral
1779D–ATARM–14-Apr-06