ATUC128L4U Atmel Corporation, ATUC128L4U Datasheet - Page 926

• Manufacturer Part Number: ATUC128L4U
• Manufacturer: Atmel Corporation

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

Table 35-45. TWI-Bus Timing Requirements
Notes:
32142A–12/2011
t
t
t
t
t
t
t
TWI
t
t
t
t
f
Symbol
r
f
HD-STA
SU-STA
SU-STO
HD-DAT
SU-DAT-
SU-DAT
LOW-TWI
LOW
HIGH
TWCK
1. Standard mode:
2. A device must internally provide a hold time of at least 300 ns for TWD with reference to the falling edge of TWCK.
TWCK and TWD rise time
TWCK and TWD fall time
(Repeated) START hold time
(Repeated) START set-up
time
STOP set-up time
Data hold time
Data set-up time
TWCK LOW period
TWCK HIGH period
TWCK frequency
Parameter
TWIM and TWIS user interface registers. Please refer to the TWIM and TWIS sections for more
information.
Notations:
C
t
t
The maximum t
of TWCK.
f
clkpb
prescaled
TWCK
b
= total capacitance of one bus line in pF
= period of TWI peripheral bus clock
100 kHz
= period of TWI internal prescaled clock (see chapters on TWIM and TWIS)
Standard
1)
Fast
Standard
Fast
Standard
Fast
Standard
Fast
Standard
Fast
Standard
Fast
Standard
Fast
-
Standard
Fast
-
Standard
Fast
Standard
Fast
; fast mode:
HD;DAT
Mode
(1)
has only to be met if the device does not stretch the LOW period (t
(
Requirement
f
TWCK
0.3
250
100
0.6
4.7
0.6
4.0
0.6
4.7
1.3
4.0
0.6
4
-
-
(2)
100 kHz
20 + 0.1C
20 + 0.1C
Minimum
-
-
-
.
b
b
Device
4t
2t
2t
4t
8t
t
t
t
t
clkpb
clkpb
clkpb
clkpb
clkpb
clkpb
clkpb
clkpb
clkpb
ATUC64/128/256L3/4U
Requirement
3.45
0.9
100
400
()
()
Maximum
1000
300
300
300
-
-
-
-
-
-
-
-
15t
----------------------- -
12t clkpb
Device
prescaled
t
clkpb
1
+
LOW-TWI
kHz
Uni
926
ns
ns
ns
t
-
-
s
s
s
s
s
s
)