AT90CAN128-16MJ Atmel, AT90CAN128-16MJ Datasheet - Page 42
![IC MCU AVR FLASH 128K 64-QFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
AT90CAN128-16MJ
Manufacturer Part Number
AT90CAN128-16MJ
Description
IC MCU AVR FLASH 128K 64-QFN
Manufacturer
Atmel
Series
AVR® 90CANr
Specifications of AT90CAN128-16MJ
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
CAN, EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-VQFN Exposed Pad, 64-HVQFN, 64-SQFN, 64-DHVQFN
For Use With
ATDVK90CAN1 - KIT DEV FOR AT90CAN128 MCU
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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5.6.1
5.7
42
External Clock
AT90CAN32/64/128
Oscillator Calibration Register – OSCCAL
When this Oscillator is selected, start-up times are determined by the SUT Fuses as shown in
Table
Table 5-8.
Note:
• Bit 7 – Reserved Bit
This bit is reserved for future use.
• Bits 6..0 – CAL6..0: Oscillator Calibration Value
Writing the calibration byte to this address will trim the internal Oscillator to remove process vari-
ations from the Oscillator frequency. This is done automatically during Chip Reset. When
OSCCAL is zero, the lowest available frequency is chosen. Writing non-zero values to this regis-
ter will increase the frequency of the internal Oscillator. Writing 0x7F to the register gives the
highest available frequency. The calibrated Oscillator is used to time EEPROM and Flash
access. If EEPROM or Flash is written, do not calibrate to more than 10% above the nominal fre-
quency. Otherwise, the EEPROM or Flash write may fail. Note that the Oscillator is intended for
calibration to 8.0 MHz. Tuning to other values is not guaranteed, as indicated in
Table 5-9.
To drive the device from an external clock source, XTAL1 should be driven as shown in
5-4. To run the device on an external clock, the CKSEL Fuses must be programmed to “0000”.
Bit
Read/Write
Initial Value
SUT1..0
OSCCAL Value
10
00
01
11
(1)
5-8.
0x3F
0x7F
0x00
1. The device is shipped with this option selected.
Start-up Time from Power-
Start-up times for the internal calibrated RC Oscillator clock selection
Internal RC Oscillator Frequency Range.
R
7
–
0
down and Power-save
CAL6
Min Frequency in Percentage of
R/W
6
<----- -----------
6 CK
6 CK
6 CK
Nominal Frequency
CAL5
R/W
5
100%
50%
75%
Device Specific Calibration Value
CAL4
R/W
4
Additional Delay from
CAL3
Reset (V
R/W
3
Reserved
14 CK + 4.1 ms
14 CK + 65 ms
14 CK
CAL2
CC
R/W
2
= 5.0V)
Max Frequency in Percentage of
CAL1
----------- ----->
R/W
1
Nominal Frequency
Recommended Usage
BOD enabled
Fast rising power
Slowly rising power
CAL0
R/W
0
100%
150%
200%
OSCCAL
Table
7679H–CAN–08/08
5-9.
Figure
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