AT90CAN128 Automotive Atmel Corporation, AT90CAN128 Automotive Datasheet - Page 335
AT90CAN128 Automotive
Manufacturer Part Number
AT90CAN128 Automotive
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT90CAN128_AUTOMOTIVE.pdf
(431 pages)
2.AT90CAN128_AUTOMOTIVE.pdf
(16 pages)
3.AT90CAN128_AUTOMOTIVE.pdf
(225 pages)
Specifications of AT90CAN128 Automotive
Flash (kbytes)
128 Kbytes
Pin Count
64
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
53
Ext Interrupts
8
Usb Speed
No
Usb Interface
No
Spi
1
Twi (i2c)
1
Uart
2
Can
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
4
Eeprom (bytes)
4096
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 125
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
4
Output Compare Channels
8
Input Capture Channels
2
Pwm Channels
7
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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25. Memory Programming
25.1
7682C–AUTO–04/08
Program and Data Memory Lock Bits
The AT90CAN32/64/128 provides six Lock bits which can be left unprogrammed (“1”) or can be
programmed (“0”) to obtain the additional features listed in
erased to “1” with the Chip Erase command.
Table 25-1.
Note:
Table 25-2.
BLB0 Mode
BLB1 Mode
LB Mode
Lock Bit Byte
1
2
3
1
2
3
4
1
Memory Lock Bits
1. “1” means unprogrammed, “0” means programmed.
BLB12
BLB02
BLB01
BLB11
LB2
LB1
Lock Bit Byte
Lock Bit Protection Modes
BLB02
BLB12
LB2
1
1
0
1
1
0
0
1
BLB01
BLB11
LB1
1
0
0
1
0
0
1
1
(1)
Bit No
7
6
5
4
3
2
1
0
Protection Type
No memory lock features enabled.
Further programming of the Flash and EEPROM is disabled in Parallel and
Serial Programming mode. The Fuse bits are locked in both Serial and
Parallel Programming mode.
Further programming and verification of the Flash and EEPROM is disabled
in Parallel and Serial Programming mode. The Boot Lock bits and Fuse bits
are locked in both Serial and Parallel Programming mode.
No restrictions for SPM (Store Program Memory) or LPM (Load Program
Memory) accessing the Application section.
SPM is not allowed to write to the Application section.
SPM is not allowed to write to the Application section, and LPM executing
from the Boot Loader section is not allowed to read from the Application
section. If Interrupt Vectors are placed in the Boot Loader section, interrupts
are disabled while executing from the Application section.
LPM executing from the Boot Loader section is not allowed to read from the
Application section. If Interrupt Vectors are placed in the Boot Loader
section, interrupts are disabled while executing from the Application section.
No restrictions for SPM or LPM accessing the Boot Loader section.
(1)(2)
Description
–
–
Boot Lock bit
Boot Lock bit
Boot Lock bit
Boot Lock bit
Lock bit
Lock bit
(1)
Table
AT90CAN32/64/128
25-2. The Lock bits can only be
Default Value
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
(1)
335
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