ATUC128L4U Atmel Corporation, ATUC128L4U Datasheet - Page 546
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ATUC128L4U
Manufacturer Part Number
ATUC128L4U
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT32UC3A0128.pdf
(377 pages)
2.AT32UC3A0128.pdf
(159 pages)
3.ATUC128L4U.pdf
(960 pages)
4.ATUC128L4U.pdf
(92 pages)
Specifications of ATUC128L4U
Flash (kbytes)
128 Kbytes
Pin Count
48
Max. Operating Frequency
50 MHz
Cpu
32-bit AVR
# Of Touch Channels
17
Hardware Qtouch Acquisition
Yes
Max I/o Pins
36
Ext Interrupts
36
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
1
Twi (i2c)
2
Uart
4
Lin
4
Ssc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
12
Adc Speed (ksps)
460
Analog Comparators
8
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
16
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
Yes
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.62 to 3.6
Operating Voltage (vcc)
1.62 to 3.6
Fpu
No
Mpu / Mmu
Yes / No
Timers
6
Output Compare Channels
18
Input Capture Channels
12
Pwm Channels
35
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATUC128L4U-U
Manufacturer:
ATMEL
Quantity:
3 006
- AT32UC3A0128 PDF datasheet
- AT32UC3A0128 PDF datasheet #2
- ATUC128L4U PDF datasheet #3
- ATUC128L4U PDF datasheet #4
- Current page: 546 of 960
- Download datasheet (15Mb)
22.9.3
Name:
Access Type:
Offset:
Reset Value:
• EXP: SMBus Timeout Clock Prescaler
• THMAX: Clock High Maximum Cycles
• TLOWM: Master Clock Stretch Maximum Cycles
• TLOWS: Slave Clock Stretch Maximum Cycles
32142A–12/2011
31
23
15
7
Used to specify how to prescale the TIM and TLOWM counters in SMBTR. Counters are prescaled according to the following
formula
Clock cycles in clock high maximum count. Prescaled by SMBTR.EXP. Used for bus free detection. Used to time T
NOTE: Uses the prescaler specified by CWGR, NOT the prescaler specified by SMBTR.
Clock cycles in master maximum clock stretch count. Prescaled by SMBTR.EXP. Used to time T
Clock cycles in slave maximum clock stretch count. Prescaled by SMBTR.EXP. Used to time T
SMBus Timing Register
f
prescaled SMBus
30
22
14
6
SMBTR
Read/Write
0x08
0x00000000
=
EXP
f
------------------------
2
CLKTWIM
EXP
+
1
29
21
13
5
28
20
12
4
TLOWM
THMAX
TLOWS
27
19
11
3
-
ATUC64/128/256L3/4U
26
18
10
2
-
LOW:SEXT
LOW:MEXT
25
17
9
1
-
.
HIGH:MAX
24
16
8
0
-
.
546
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