ATmega169P Atmel Corporation, ATmega169P Datasheet - Page 248

• Manufacturer Part Number: ATmega169P
• Manufacturer: Atmel Corporation

Specifications of ATmega169P

• 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: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 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

23.5.3
8018P–AVR–08/10
LCDFRR – LCD Frame Rate Register
Table 23-3.
• Bit 7 – Res: Reserved Bit
This bit is reserved and will always read as zero.
• Bits 6:4 – LCDPS2:0: LCD Prescaler Select
The LCDPS2:0 bits selects tap point from a prescaler. The prescaled output can be further
divided by setting the clock divide bits (LCDCD2:0). The different selections are shown in
23-4. Together they determine the prescaled LCD clock (clk
module.
Table 23-4.
Bit
(0xE6)
Read/Write
Initial Value
LCDPS2
LCDPM2
0
0
0
0
1
1
1
1
1
1
1
1
LCDPS1
LCD Port Mask (Continued)
LCD Prescaler Select
LCDPM1
R
7
–
0
0
0
1
1
0
0
1
1
0
0
1
1
LCDPS2
R/W
6
0
LCDPS0
0
1
0
1
0
1
0
1
LCDPM0
LCDPS1
0
1
0
1
R/W
5
0
Output from
clk
clk
clk
Prescaler
clk
clk
clk
clk
clk
clk
LCDPS0
LCD
LCD
LCD
LCD
LCD
LCD
I/O Port in Use as Segment
R/W
LCD
LCD
LCD
4
0
/1024
/2048
/4096
/128
/256
/512
/16
/64
/N
SEG0:20
SEG0:22
SEG0:23
SEG0:24
Driver
R
3
–
0
Applied Prescaled LCD Clock Frequency
when LCDCD2:0 = 0, Duty = 1/4, and
LCDCD2
LCD_PS
R/W
2
0
Frame Rate = 64Hz
), which is clocking the LCD
LCDCD1
R/W
ATmega169P
130 kHz
260 kHz
520 kHz
8.1 kHz
1
0
33 kHz
66 kHz
1 MHz
2 MHz
Maximum Number of
LCDCD0
Segments
R/W
0
0
21
23
24
25
LCDFRR
Table
248