ATMEGA169L-8MI Atmel, ATMEGA169L-8MI Datasheet - Page 222

• Manufacturer Part Number: ATMEGA169L-8MI
• Description: IC MCU AVR 16K LV 8MHZ IND 64QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA169L-8MI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-MLF®, 64-QFN
• For Use With: ATAVRISP2 - PROGRAMMER AVR IN SYSTEMATAVRBFLY - KIT EVALUATION AVR BUTTERFLYATSTK502 - MOD EXPANSION AVR STARTER 500
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: ATMEGA169L-4MI; ATMEGA169L-4MI

LCD Frame Rate Register –
LCDFRR
222
ATmega169V/L
• 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 different selections are shown in Table 95. Unused pins can be used as ordinary
port pins.
Table 95. LCD Port Mask
• Bit 7 – Res: Reserved Bit
This bit is reserved bit in the ATmega169 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 fur-
ther divided by setting the clock divide bits (LCDCD2:0). The different selections are
shown in Table 96. Together they determine the prescaled LCD clock (clk
is clocking the LCD module.
Table 96. LCD Prescaler Select
Bit
Read/Write
Initial Value
LCDPM2
LCDPS2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
LCDPS1
LCDPM1
0
0
1
1
0
0
1
1
R
0
0
1
1
0
0
1
1
7
–
0
LCDPS2
R/W
LCDPS0
LCDPM0
6
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
LCDPS1
R/W
5
0
clk
clk
clk
Prescaler
clk
clk
clk
clk
clk
clk
Output
LCD
LCD
LCD
from
LCD
LCD
LCD
LCD
LCD
LCDPS0
LCD
I/O Port in Use as
/1024
/2048
/4096
Segment Driver
R/W
/128
/256
/512
/16
/64
4
0
/N
SEG0:12
SEG0:14
SEG0:16
SEG0:18
SEG0:20
SEG0:22
SEG0:23
SEG0:24
R
3
–
0
Duty = 1/4, and Frame Rate = 64 Hz
Frequency when LCDCD2:0 = 0,
Applied Prescaled LCD Clock
LCDCD2
R/W
2
0
130 kHz
260 kHz
520 kHz
LCDCD1
8.1 kHz
33 kHz
66 kHz
1 MHz
2 MHz
Maximum Number of
R/W
1
0
Segments
LCDCD0
13
15
17
19
21
23
24
25
R/W
LCD_PS
2514H–AVR–05/03
0
0
), which
LCDFRR