M42800A Atmel Corporation, M42800A Datasheet - Page 142
M42800A
Manufacturer Part Number
M42800A
Description
Manufacturer
Atmel Corporation
Datasheets
1.M40800.pdf
(284 pages)
2.M40800.pdf
(153 pages)
3.M42800A.pdf
(224 pages)
4.M42800A.pdf
(27 pages)
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
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• TIMEOUT: Receiver Time-out (Code Label US_TIMEOUT)
0 = There has not been a time-out since the last “Start Time-out” command or the Time-out Register is 0.
1 = There has been a time-out since the last “Start Time-out” command.
• TXEMPTY: Transmitter Empty (Code Label US_TXEMPTY)
0 = There are characters in either US_THR or the Transmit Shift Register, or the transmitter is disabled.
1 = There are no characters in either US_THR or the Transmit Shift Register. TXEMPTY is 1 after Parity, Stop Bit and
Time-guard have been transmitted. TXEMPTY is 1 after stop bit has been sent, or after Time-guard has been sent if
US_TTGR is not 0.
Equal to zero when the USART is disabled or at reset. Transmitter Enable command (in US_CR) sets this bit to one, if the
transmitter is disabled.
• COMMTX: ARM7TDMI ICE Debug Communication Channel Transmit Status
For USART0 only. Refer to the ARM7TDMI Datasheet for a complete description of this flag.
• COMMRX: ARM7TDMI ICE Debug Communication Channel Receive Status
For USART0 only. Refer to the ARM7TDMI Datasheet for a complete description of this flag.
AT91M42800A
142
1779D–ATARM–14-Apr-06
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