ATmega169P Automotive Atmel Corporation, ATmega169P Automotive Datasheet - Page 244

• Manufacturer Part Number: ATmega169P Automotive
• Manufacturer: Atmel Corporation

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

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