ATmega169P Automotive Atmel Corporation, ATmega169P Automotive Datasheet - Page 244
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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22.5.2
244
ATmega169P Automotive
LCDCRB – LCD Control and Status Register B
• Bit 0 – LCDBL: LCD Blanking
When this bit is written to one, the display will be blanked after completion of a frame. All seg-
ment and common pins will be driven to ground.
• Bit 7 – LCDCS: LCD Clock Select
When this bit is written to zero, the system clock is used. When this bit is written to one, the
external asynchronous clock source is used. The asynchronous clock source is either
Timer/Counter Oscillator or external clock, depending on EXCLK in ASSR. See
operation of the Timer/Counter” on page 150
• Bit 6 – LCD2B: LCD 1/2 Bias Select
When this bit is written to zero, 1/3 bias is used. When this bit is written to one, ½ bias is used.
Refer to the LCD Manufacture for recommended bias selection.
• Bit 5:4 – LCDMUX1:0: LCD Mux Select
The LCDMUX1:0 bits determine the duty cycle. Common pins that are not used are ordinary port
pins. The different duty selections are shown in
Table 22-2.
Note:
• Bit 3 – Res: Reserved Bit
This bit is reserved and will always read as zero.
• Bits 2:0 – LCDPM2:0: LCD Port Mask
The LCDPM2:0 bits determine the number of port pins to be used as segment drivers. The dif-
ferent selections are shown in
Bit
(0xE5)
Read/Write
Initial Value
LCDMUX1
0
0
1
1
1. 1/2 bias when LCD2B is written to one and 1/3 otherwise.
LCDCS
R/W
LCD Duty Select
7
0
LCDMUX0
0
1
0
1
LCD2B
R/W
6
0
LCDMUX1
Table
R/W
5
0
Static
Duty
1/2
1/3
1/4
22-3. Unused pins can be used as ordinary port pins.
LCDMUX0
R/W
4
0
1/2 or 1/3
1/2 or 1/3
1/2 or 1/3
for further details.
Static
Table
Bias
R
3
–
0
(1)
(1)
(1)
22-2.
LCDPM2
COM Pin
COM0:1
COM0:2
COM0:3
R/W
COM0
2
0
LCDPM1
R/W
1
0
I/O Port Pin
LCDPM0
R/W
COM1:3
COM2:3
”Asynchronous
COM3
0
0
None
7735B–AVR–12/07
LCDCRB
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