M55800A Atmel Corporation, M55800A Datasheet - Page 24

• 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

Timer/Counter Signals
Reset Signals
24
AT91M55800A
TIOA/
TIOB/
TCLK
Due to internal synchronization of input signals, there is a delay between an input event
and a corresponding output event. This delay is 3(t
mode and 4(t
minimum pulse width and minimum input period shown in Table 33 and Table 34, and
as represented in Figure 10.
Table 33. Timer Input Minimum Pulse Width
Table 34. Timer Input Minimum Period
Figure 10. Timer Input
MCK
A minimum pulse width is necessary, as shown in Table 35 and as represented in Fig-
ure 11.
Table 35. Reset Minimum Pulse Width
Figure 11. Reset Signal
Only the NRST rising edge is synchronized with MCK. The falling edge is asynchronous.
NRST
Symbol
TC
Symbol
Symbol
RST
TC
1
1
2
Parameter
TCLK/TIOA/TIOB Minimum Input Period
Parameter
TCLK/TIOA/TIOB Minimum Pulse Width
Parameter
NRST Minimum Pulse Width
CPMCK
) in Waveform Total-count Detection mode. The inputs must meet the
3(t
CPMCK
TC
1
/2)
RST
1
TC
2
CPMCK
Min Input Period
Min Pulse Width
Min Pulse Width
) in Waveform Event Detection
5(t
3(t
3(t
CPMCK
CPMCK
310
CPMCK
/2)
/2)
/2)
1727E–ATARM–01/04
Units
Units
Units
ns
ns
µs