ATmega16M1 Automotive Atmel Corporation, ATmega16M1 Automotive Datasheet - Page 304

• 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

25.7
25.8
25.8.1
25.8.2
304
Serial Programming Pin Mapping
Parallel Programming
Atmel ATmega16/32/64/M1/C1
Enter Programming Mode
Considerations for Efficient Programming
Table 25-14. Pin Mapping Serial Programming
The following algorithm puts the device in Parallel (High-voltage) > Programming mode:
If the rise time of the V
tive algorithm can be used.
The loaded command and address are retained in the device during programming. For effi-
cient programming, the following should be considered.
1. Set Prog_enable pins listed in Table 25-9. to “0000”, RESET pin to “0” and V
2. Apply 4.5 - 5.5V between VCC and GND. Ensure that V
3. Wait 20 - 60µs, and apply 11.5 - 12.5V to RESET.
4. Keep the Prog_enable pins unchanged for at least 10µs after the High-voltage has
5. Wait at least 300µs before giving any parallel programming commands.
6. Exit Programming mode by power the device down or by bringing RESET pin to 0V.
1. Set Prog_enable pins listed in Table 25-9. to “0000”, RESET pin to “0” and V
2. Apply 4.5 - 5.5V between VCC and GND.
3. Monitor V
4. Keep the Prog_enable pins unchanged for at least 10µs after the High-voltage has
5. Wait until V
6. Exit Programming mode by power the device down or by bringing RESET pin to 0V.
• The command needs only be loaded once when writing or reading multiple memory
• Skip writing the data value 0xFF, that is the contents of the entire EEPROM (unless the
• Address high byte needs only be loaded before programming or reading a new 256 word
locations.
EESAVE Fuse is programmed) and Flash after a Chip Erase.
window in Flash or 256 byte EEPROM. This consideration also applies to Signature bytes
reading.
within the next 20µs.
been applied to ensure the Prog_enable Signature has been latched.
been applied to ensure the Prog_enable Signature has been latched.
commands.
MOSI_A
MISO_A
Symbol
SCK_A
CC
CC
, and as soon as V
actually reaches 4.5 -5.5V before giving any parallel programming
CC
is unable to fulfill the requirements listed above, the following alterna-
Pins
PD3
PD2
PD4
CC
reaches 0.9 - 1.1V, apply 11.5 - 12.5V to RESET.
I/O
O
I
I
CC
reaches at least 1.8V
Serial Data out
Serial Data in
Description
Serial Clock
7647G–AVR–09/11
CC
CC
to 0V.
to 0V.