SAM7S128 Atmel Corporation, SAM7S128 Datasheet - Page 158

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SAM7S128

Manufacturer Part Number
SAM7S128
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of SAM7S128

Flash (kbytes)
128 Kbytes
Pin Count
64
Max. Operating Frequency
55 MHz
Cpu
ARM7TDMI
Hardware Qtouch Acquisition
No
Max I/o Pins
32
Ext Interrupts
32
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
1
Twi (i2c)
1
Uart
3
Ssc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
384
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
32
Self Program Memory
NO
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)
3.0 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
22.4.7
Register Name:
Access Type:
• TXNPTR: Transmit Next Pointer Address
TXNPTR is the address of the next buffer to transmit when the current buffer is empty.
22.4.8
Register Name:
Access Type:
• TXNCR: Transmit Next Counter Value
TXNCR is the size of the next buffer to transmit.
158
31
23
15
31
23
15
7
7
SAM7S Series
PDC Transmit Next Pointer Register
PDC Transmit Next Counter Register
30
22
14
30
22
14
PERIPH_TNPR
Read-write
6
PERIPH_TNCR
Read-write
6
29
21
13
29
21
13
5
5
28
20
12
28
20
12
4
4
TXNPTR
TXNPTR
TXNPTR
TXNPTR
TXNCR
TXNCR
--
--
27
19
11
27
19
11
3
3
26
18
10
26
18
10
2
2
25
17
25
17
9
1
9
1
6175L–ATARM–28-Jul-11
24
16
24
16
8
0
8
0

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