ATmega16M1 Automotive Atmel Corporation, ATmega16M1 Automotive Datasheet - Page 310

• Manufacturer Part Number: ATmega16M1 Automotive
• Manufacturer: Atmel Corporation

Specifications of ATmega16M1 Automotive

• Flash (kbytes): 16 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): 1
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 150
• 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

25.8.11
25.8.12
25.8.13
310
Atmel ATmega16/32/64/M1/C1
Programming the Lock Bits
Reading the Fuse and Lock Bits
Reading the Signature Bytes
The algorithm for programming the Lock bits is as follows (refer to
page 305
The Lock bits can only be cleared by executing Chip Erase.
The algorithm for reading the Fuse and Lock bits is as follows (refer to
Flash” on page 305
Figure 25-6. Mapping Between BS1, BS2 and the Fuse and Lock Bits During Read
The algorithm for reading the Signature bytes is as follows (refer to
on page 305
1. A: Load Command “0010 0000”.
2. C: Load Data Low Byte. Bit n = “0” programs the Lock bit. If LB mode 3 is pro-
3. Give WR a negative pulse and wait for RDY/BSY to go high.
1. A: Load Command “0000 0100”.
2. Set OE to “0”, BS2 to “0” and BS1 to “0”. The status of the Fuse Low bits can now be
3. Set OE to “0”, BS2 to “1” and BS1 to “1”. The status of the Fuse High bits can now be
4. Set OE to “0”, BS2 to “1”, and BS1 to “0”. The status of the Extended Fuse bits can
5. Set OE to “0”, BS2 to “0” and BS1 to “1”. The status of the Lock bits can now be read
6. Set OE to “1”.
1. A: Load Command “0000 1000”.
2. B: Load Address Low Byte (0x00 - 0x02).
3. Set OE to “0”, and BS1 to “0”. The selected Signature byte can now be read at DATA.
4. Set OE to “1”.
grammed (LB1 and LB2 is programmed), it is not possible to program the Boot Lock
bits by any External Programming mode.
read at DATA (“0” means programmed).
read at DATA (“0” means programmed).
now be read at DATA (“0” means programmed).
at DATA (“0” means programmed).
for details on Command and Data loading):
for details on Command and Address loading):
Fuse Low Byte
Extended Fuse Byte
Fuse High Byte
Lock Bits
for details on Command loading):
BS2
BS2
0
1
0
1
BS1
0
1
“Programming the Flash” on
“Programming the Flash”
DATA
“Programming the
7647G–AVR–09/11