M55800A Atmel Corporation, M55800A Datasheet - Page 134
M55800A
Manufacturer Part Number
M55800A
Description
Manufacturer
Atmel Corporation
Datasheets
1.M40800.pdf
(284 pages)
2.M40800.pdf
(153 pages)
3.M55800A.pdf
(29 pages)
4.M55800A.pdf
(256 pages)
5.M55800A.pdf
(28 pages)
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
- M40800 PDF datasheet
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18. USART: Universal Synchronous/ Asynchronous Receiver/Transmitter
Figure 18-1. USART Block Diagram
134
USxIRQ
AT91M5880A
MCK/8
MCK
ASB
APB
AMBA
The AT91M55800AA provides three identical, full-duplex, universal synchronous/asynchronous
receiver/transmitters which are connected to the Peripheral Data Controller.
The main features are:
• Programmable Baud Rate Generator
• Parity, Framing and Overrun Error Detection
• Line Break Generation and Detection
• Automatic Echo, Local Loopback and Remote Loopback channel modes
• Multi-drop Mode: Address Detection and Generation
• Interrupt Generation
• Two Dedicated Peripheral Data Controller channels
• 5-, 6-, 7-, 8- and 9-bit character length
Peripheral Data Controller
Baud Rate Generator
Receiver
Channel
Interrupt Control
Control Logic
Transmitter
Channel
Baud Rate Clock
USART Channel
Transmitter
Receiver
Controller
Parallel
PIO:
I/O
1745F–ATARM–06-Sep-07
RXD
TXD
SCK
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