M42800A Atmel Corporation, M42800A Datasheet - Page 117
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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USART Receiver Holding Register
Name:
Access Type:Read Only
Reset Value: 0
Offset:
• RXCHR: Received Character
Last character received if RXRDY is set. When number of data bits is less than 8 bits, the bits are right-aligned.
All non-significant bits read zero.
USART Transmitter Holding Register
Name:
Access Type:Write Only
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 8
bits, the bits are right-aligned.
1354D–ATARM–08/02
31
23
15
31
23
15
–
–
–
–
–
–
7
7
US_RHR
0x18
US_THR
0x1C
30
22
14
30
22
14
–
–
–
6
–
–
–
6
29
21
13
29
21
13
–
–
–
5
–
–
–
5
28
20
12
28
20
12
–
–
–
–
–
–
4
4
RXCHR
TXCHR
27
19
27
19
11
11
–
–
–
–
–
–
3
3
26
18
10
26
18
10
–
–
–
2
–
–
–
2
AT91X40 Series
25
17
25
17
–
–
9
–
1
–
–
9
–
1
24
16
24
16
–
–
–
–
–
–
8
0
8
0
117
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