M55800A Atmel Corporation, M55800A Datasheet - Page 121

• Manufacturer Part Number: M55800A
• Manufacturer: Atmel Corporation

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

USART Transmit Pointer Register
Name:
Access Type:Read/Write
Reset Value: 0
Offset:
• TXPTR: Transmit Pointer
TXPTR must be loaded with the address of the transmit buffer.
USART Transmit Counter Register
Name:
Access Type:Read/Write
Reset Value: 0
Offset:
• TXCTR: Transmit Counter
TXCTR must be loaded with the size of the transmit buffer.
0: Stop Peripheral Data Transfer dedicated to the transmitter.
1 - 65535: Start Peripheral Data transfer if TXRDY is active.
1354D–ATARM–08/02
31
23
15
31
23
15
–
–
7
7
US_TPR
0x38
US_TCR
0x3C
30
22
14
30
22
14
6
–
–
6
29
21
13
29
21
13
5
–
–
5
28
20
12
28
20
12
–
–
4
4
TXCTR
TXCTR
TXPTR
TXPTR
TXPTR
TXPTR
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
121