M42800A Atmel Corporation, M42800A Datasheet - Page 211

• 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 24-1. NWAIT Rising
Figure 24-2.
Note:
1779D–ATARM–14-Apr-06
MCKI
NWAIT
NCS
1. These numbers refer to the standard access cycles.
NWAIT
MCKI
Number of Standard Wait States is Two
1
(1)
Standard Access Length with Two Wait States
NWAIT Setup before MCKI Rising (EB16)
If the NWAIT setup time is satisfied on the first rising edge of MCKI, the behavior is accurate.
The EBI operations are not affected when the NWAIT rises.
If the NWAIT setup time is satisfied on the following edges of MCKI and if at least one stan-
dard wait state remains to be executed, the behavior is accurate. In the following example, the
number of standard wait states is two. The NWAIT setup time on the second rising edge of
MCKI must be met.
EB16
2
(1)
AT91M42800A
3
(1)
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