M42800A Atmel Corporation, M42800A Datasheet - Page 143

• 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

17.17 USART Receiver Holding Register
Name:
Access Type:
Offset:
Reset Value:
• RXCHR: Received Character
Last character received if RXRDY is set. When number of data bits is less than 9 bits, the bits are right-aligned.
All unused bits read zero.
17.18 USART Transmitter Holding Register
Name:
Access Type:
Offset:
• TXCHR: Character to be Transmitted
Next character to be transmitted after the current character if TXRDY is not set. When number of data bits is less than 9
bits, the bits are right-aligned.
1779D–ATARM–14-Apr-06
31
23
15
31
23
15
–
–
–
7
–
–
–
7
30
22
14
30
22
14
US_RHR
Read-only
0x18
0x0
–
–
–
6
US_THR
Write-only
0x1C
–
–
–
6
29
21
13
29
21
13
–
–
–
5
–
–
–
5
28
20
12
28
20
12
–
–
–
4
–
–
–
4
RXCHR
TXCHR
27
19
11
27
19
11
–
–
–
3
–
–
–
3
26
18
10
26
18
10
–
–
–
2
–
–
–
2
AT91M42800A
25
17
25
17
–
–
9
–
1
–
–
9
–
1
RXCHR
TXCHR
24
16
24
16
–
–
8
0
–
–
8
0
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