ATMEGA169V-1MC Atmel, ATMEGA169V-1MC Datasheet - Page 347

• Manufacturer Part Number: ATMEGA169V-1MC
• Description: IC MCU AVR 16K 1.8V 1MHZ 64-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA169V-1MC

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 1MHz
• 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): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°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

ATmega169 Rev C
2514H–AVR–05/03
1. Serial downloading
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4. High Current Consumption In Power Down when JTAGEN is Programmed
3. LCD Contrast Control
2. Some Data Combinations Can Result in Dim Segments on the LCD
1. LCD Current Consumption
High Current Consumption In Power Down when JTAGEN is Programmed
LCD Contrast Control
Some Data Combinations Can Result in Dim Segments on the LCD
LCD Current Consumption
When entering Serial Programming mode the second byte will not echo back as
described in the Serial Programming algorithm.
Problem Fix/Workaround
Check if the third byte echoes back to ensure that the device is in Programming
mode (this will be fixed in rev. C).
The input buffer on TDO (PF6) is always enabled and the pull-up is always disabled
when JTAG is programmed. This can leave the output floating.
Problem Fix/Workaround
Add external pull-up to PF6.
Unprogram the JTAGEN Fuse before shipping out the end product.
The contrast control is not working properly when using synchronous clock (chip
clock) to obtain an LCD clock, and the chip clock is 125 kHz or faster.
Problem Fix/Workaround
Use a low chip clock frequency (32 kHz) or apply an external voltage to the LCD-
CAP pin.
All segments connected to a common plane might be dimmed (lower contrast) when
a certain combination of data is displayed.
Problem Fix/Workaround
Default waveform: If there are any unused segment pins, loading one of these with a
1 nF capacitor and always write ‘0’ to this segment eliminates the problem.
Low power waveform: Add a 1 nF capacitor to each common pin.
In an interval where V
current consumption is up to three times higher than expected. This will only be an
issue in Power-save mode with the LCD running as the LCD current is negligible
compared to the overall power consumption in all other modes of operation.
Problem Fix/Workaround
No known workaround.
CC
is within the range VLCD -0.2V to VLCD + 0.4V, the LCD
ATmega169V/L
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