M42800A Atmel Corporation, M42800A Datasheet - Page 110

• 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

USART Mode Register
Name:
Access Type:Read/Write
Reset Value: 0
Offset:
•
•
Start, stop and parity bits are added to the character length.
• SYNC: Synchronous Mode Select (Code Label US_SYNC)
0 = USART operates in Asynchronous Mode.
1 = USART operates in Synchronous Mode.
110
USCLKS: Clock Selection (Baud Rate Generator Input Clock)
CHRL: Character Length
31
23
15
–
–
7
0
0
1
0
0
1
1
AT91X40 Series
CHMODE
USCLKS
CHRL
CHRL
US_MR
0x04
30
22
14
–
–
6
X
0
1
0
1
0
1
Selected Clock
MCK
MCK/8
External (SCK)
Character Length
Five bits
Six bits
Seven bits
Eight bits
29
21
13
–
–
5
NBSTOP
USCLKS
28
20
12
–
–
4
27
19
11
–
–
–
3
CLKO
PAR
26
18
10
–
2
–
US_CLKS_MCK8
US_CLKS_MCK
US_CLKS_SCK
MODE9
Code Label
Code Label
US_CHRL_5
US_CHRL_6
US_CHRL_7
US_CHRL_8
US_CLKS
US_CHRL
25
17
–
9
1
–
1354D–ATARM–08/02
SYNC
24
16
–
–
–
8
0