ATmega64M1 Atmel Corporation, ATmega64M1 Datasheet - Page 209
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ATmega64M1
Manufacturer Part Number
ATmega64M1
Description
Manufacturer
Atmel Corporation
Specifications of ATmega64M1
Flash (kbytes)
64 Kbytes
Pin Count
32
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
12
Hardware Qtouch Acquisition
No
Max I/o Pins
27
Ext Interrupts
27
Usb Speed
No
Usb Interface
No
Spi
1
Uart
1
Can
1
Lin
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
11
Adc Resolution (bits)
10
Adc Speed (ksps)
125
Analog Comparators
4
Resistive Touch Screen
No
Dac Channels
1
Dac Resolution (bits)
10
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
4
Eeprom (bytes)
2048
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
2
Output Compare Channels
14
Input Capture Channels
1
Pwm Channels
10
32khz Rtc
No
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATmega64M1-15MD
Manufacturer:
ATMEL
Quantity:
700
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20.5.6.3
20.5.7
20.5.7.1
8209D–AVR–11/10
Data Length
Handling LBT[5:0]
Data Length in LIN 2.1
The new LBT[5..0] value will be used up to the end of the response. Then, the LBT[5..0] will be
reset to 32 for the next header.
The LINBTR register can be used to re-calibrate the clock oscillator.
The re-synchronization is not performed if the LIN node is enabled as a master.
LDISR bit of LINBTR register is used to:
Note that the LENA bit of LINCR register is important for this handling (see
Figure 20-8. Handling LBT[5:0]
Section 20.4.6 “LIN Commands” on page 203
the LRXDL[3..0] or LTXDL[3..0] fields of LINDLR register before receiving or transmitting a
response.
In the case of Tx Response the LRXDL[3..0] will be used by the hardware to count the number of
bytes already successfully sent.
In the case of Rx Response the LTXDL[3..0] will be used by the hardware to count the number of
bytes already successfully received.
If an error occurs, this information is useful to the programmer to recover the LIN messages.
• To enable the setting of LBT[5:0] (to manually adjust the baud rate especially in the case of
• Disable the re-synchronization in LIN Slave Mode for test purposes
• If LTXDL[3..0]=0 only the CHECKSUM will be sent
• If LRXDL[3..0]=0 the first byte received will be interpreted as the CHECKSUM
• If LTXDL[3..0] or LRXDL[3..0] >8, values will be forced to 8 after the command setting and
UART mode). A minimum of 8 is required for LBT[5:0] due to the sampling operation
before sending or receiving of the first byte
=1
Write in LINBTR register
(LINCR bit 4)
LENA ?
Enable re-synch. in LIN mode
LBT[5..0] forced to 0x20
LDISR forced to 0
=0
LDISR
to write
=0
describes how to set or how are automatically set
ATmega16M1/32M1/64M1
=1
Disable re-synch. in LIN mode
LBT[5..0] = LBT[5..0] to write
LDISR forced to 1
(LBT[5..0]
min
Figure
=8)
20-8).
209
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