ATmega169P Automotive Atmel Corporation, ATmega169P Automotive Datasheet - Page 172
ATmega169P Automotive
Manufacturer Part Number
ATmega169P Automotive
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT90CAN128_AUTOMOTIVE.pdf
(225 pages)
2.ATMEGA169P_AUTOMOTIVE.pdf
(373 pages)
3.ATMEGA169P_AUTOMOTIVE.pdf
(14 pages)
Specifications of ATmega169P Automotive
Flash (kbytes)
16 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
54
Ext Interrupts
17
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
Segment Lcd
100
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)
1
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
Yes
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
3
Output Compare Channels
4
Input Capture Channels
1
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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21.8
21.8.1
21.8.2
172
High-voltage Serial Programming Algorithm
Atmel ATtiny24/44/84 [Preliminary]
Enter High-voltage Serial Programming Mode
Considerations for Efficient Programming
To program and verify the Atmel
ming mode, the following sequence is recommended (see instruction formats in
on page
The following algorithm puts the device in High-voltage Serial Programming mode:
1. Apply 4.5 - 5.5V between V
2. Set RESET pin to “0” and toggle SCI at least six times.
3. Set the Prog_enable pins listed in
4. Apply V
5. Shortly after latching the Prog_enable signature, the device will actively output data on
6. Wait at least 50 µs before giving any serial instructions on SDI/SII.
Table 21-14. High-voltage Reset Characteristics
The loaded command and address are retained in the device during programming. For effi-
cient programming, the following should be considered.
• 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 only needs be loaded before programming or reading a new 256-word
Supply Voltage
V
4.5V
5.5V
locations.
EESAVE fuse is programmed) and flash after a chip erase.
window in flash or 256-byte EEPROM. This consideration also applies to reading signature
bytes.
CC
100 ns.
t
has been latched.
the Prog_enable[2]/SDO pin, and the resulting drive contention may increase the
power consumption. To minimize this drive contention, release the Prog_enable[2] pin
after t
HVRST
175):
HVRST
after the High-voltage has been applied to ensure the Prog_enable signature
HVRST
has elapsed.
- 5.5V to RESET. Keep the Prog_enable pins unchanged for at least
RESET Pin High-voltage Threshold
CC
®
and GND.
V
AVR
11.5V
11.5V
HVRST
Table 21-13 on page 171
®
ATtiny24/44/84 in the high-voltage serial program-
Minimum High-voltage Period for
to “000” and wait at least
Latching Prog_enable
t
100ns
100ns
HVRST
7701E–AVR–02/11
Table 21-15
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