SAM7L128 Atmel Corporation, SAM7L128 Datasheet - Page 184

• Manufacturer Part Number: SAM7L128
• Manufacturer: Atmel Corporation

Specifications of SAM7L128

• Flash (kbytes): 128 Kbytes
• Pin Count: 144
• Max. Operating Frequency: 36 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 80
• Ext Interrupts: 80
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Uart: 3
• Segment Lcd: 40
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 4
• Adc Resolution (bits): 10
• Adc Speed (ksps): 460
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 6
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 1.8 to 3.6
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

22.4.3
Register Name:
Access Type:
• TXPTR: Transmit Pointer Address
Address of the transmit buffer.
22.4.4
Register Name:
Access Type:
• TXCTR: Transmit Counter Value
TXCTR is the size of the transmit transfer to be performed. At zero, the peripheral data transfer is stopped.
184
31
23
15
31
23
15
7
7
AT91SAM7L128/64 Preliminary
PDC Transmit Pointer Register
PDC Transmit Counter Register
30
22
14
30
22
14
PERIPH_TPR
Read-write
6
PERIPH_TCR
Read-write
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
11
27
19
11
3
3
26
18
10
26
18
10
2
2
25
17
25
17
9
1
9
1
6257A–ATARM–20-Feb-08
24
16
24
16
8
0
8
0