ATMEGA169V-8MI Atmel, ATMEGA169V-8MI Datasheet - Page 215
![no-image](/images/manufacturer_photos/0/0/78/atmel_sml.jpg)
ATMEGA169V-8MI
Manufacturer Part Number
ATMEGA169V-8MI
Description
IC MCU AVR 16K 1.8V 1MHZ 64-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA169V-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
54
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)
1.8 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
ATAVRBFLY - KIT EVALUATION AVR BUTTERFLYATSTK502 - MOD EXPANSION AVR STARTER 500
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
ATMEGA169V-1MI
ATMEGA169V-1MI
ATMEGA169V-1MI
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Low Power Waveform
Operation in Sleep Mode
Display Blanking
Port Mask
2514P–AVR–07/06
To reduce toggle activity and hence power consumption a low power waveform can be
selected by writing LCDAB to one. Low power waveform requires two subsequent
frames with the same display data to obtain zero DC voltage. Consequently data latch-
ing and Interrupt Flag is only set every second frame. Default and low power waveform
is shown in Figure 103 for 1/3 duty and 1/3 bias. For other selections of duty and bias,
the effect is similar.
Figure 103. Default and Low Power Waveform
When synchronous LCD clock is selected (LCDCS = 0) the LCD display will operate in
Idle mode and Power-save mode with any clock source.
An asynchronous clock from TOSC1 can be selected as LCD clock by writing the
LCDCS bit to one when Calibrated Internal RC Oscillator is selected as system clock
source. The LCD will then operate in Idle mode, ADC Noise Reduction mode and
Power-save mode.
When EXCLK in ASSR Register is written to one, and asynchronous clock is selected,
the external clock input buffer is enabled and an external clock can be input on Timer
Oscillator 1 (TOSC1) pin instead of a 32 kHz crystal. See “Asynchronous operation of
the Timer/Counter” on page 138 for further details.
Before entering Power-down mode, Standby mode or ADC Noise Reduction mode with
synchronous LCD clock selected, the user have to disable the LCD. Refer to “Disabling
the LCD” on page 218.
When LCDBL is written to one, the LCD is blanked after completing the current frame.
All segments and common pins are connected to GND, discharging the LCD. Display
memory is preserved. Display blanking should be used before disabling the LCD to
avoid DC voltage across segments, and a slowly fading image.
For LCD with less than 25 segment terminals, it is possible to mask some of the unused
pins and use them as ordinary port pins instead. Refer to Table 95 for details. Unused
common pins are automatically configured as port pins.
-
-
2
1
2
1
2
1
1
2
/
/
/
/
/
/
/
/
3
3
3
3
3
3
3
3
-V
V
V
V
V
V
V
V
V
V
V
V
GND
GND
GND
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
Frame
Frame
SEG0
COM0
SEG0 - COM0
-
-
2
1
2
1
2
1
1
2
/
/
/
/
/
/
/
/
3
3
3
3
3
3
3
3
-V
V
V
V
GND
V
V
V
GND
V
V
V
GND
V
V
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
Frame
ATmega169/V
Frame
SEG0
COM0
SEG0 - COM0
215
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